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An Entire Year of SF's Most Heart-Stopping House Flips, Mapped

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In a market like San Francisco's, house flipping is an art, a vocation, and occasionally a crime. Hardly a day goes by without the carcass of some poor slain Edwardian turning up on Redfin, stripped of moldings, its old fireplace replaced with a cheapie impostor, and any detail deemed complicated or just too pricey to work with snuffed out. It's no wonder that flippers in San Francisco pull down the highest gains in the country by dollar amount. And they do pretty well ROI-wise, too. On average, the city's flipped homes sell for 31 percent more than their last sale price (though, unfortunately, data that isolates out profits is not forthcoming from the rakers-in of said profits). A RealtyTrac report in June found that SF has the third-highest sales price for flips in the nation, behind only Pitkin County, Colorado, and Marin County.

Naturally, when it came time to map the biggest residential somersaults of the past year, a measly 31 percent gain would be utterly ho-hum. So we searched our flip-stalking archives for the homes that made the highest gains. Every property on the map that follows saw, with one exception, at least a 100 percent increase—a few went to 200 percent, and, in one extreme Cow Hollow case involving a total reboot, we noted a fourfold gain. Let us pause here a moment to say: DAMN.

Overall the flippiest neighborhood in this wholly unscientific roundup of superflips (remember, we're only looking at the homes we happened to write about over the past year) turned out to be the Richmond. Noe has a bit of a reputation, but in this group the Richmond had six superflips, beating out Noe's three and Glen Park's two. (Note: the majority of the map points compare prior sale prices to new ones. For properties that haven't yet sold, we went with the new ask price.)

This is not to say that every flip is a bad one, or that all of the new prices are unjustifiably jacked up. Quite a few on the map are passable, even commendable, renovations, and several boosted their prices by genuinely adding value—a bedroom here, a half-bath there. There are horrors, too, yes. One commenter saw her grandmother's little pink home in Noe transformed into something marketed as "the Noe White House." Is it any wonder that "flipping" is a euphemism for you-know-what-ing? Here now is our map of the 21 biggest flip gains from the past year, featuring some homes that grew in a good way and others that were, shall we say, totally "flipped" over.


· San Francisco Flippers Get the Highest Gains in the Country [Curbed SF]
· The Average SF Flip Sells for 31% More Than Its Initial Price [Curbed SF]
· Flipping Out Archives [Curbed SF]
· Eureka Valley Edwardian Dumps Edward for Someone Richer [Curbed SF]
· Edwardian Flip Near Lake Street Adds $1.573M to Price [Curbed SF]
· Two Noe Valley Homes on One Lot Flip for Nearly $3M Gain [Curbed SF]
· This Glen Park Flip Added $1.6M to its Price in Under Two Years [Curbed SF]
· $1M Noe Valley Teardown Transforms Into $3.4M Modern Home [Curbed SF]
· What Does it Take to Double the Price of an Outer Sunset Flip? [Curbed SF]
· Inner Richmond Flip Adds $1.535M to Price in One Year [Curbed SF]
· Noe Valley House Transforms to Flip for $1.5M Gain in One Year [Curbed SF]
· Totally Remodeled Richmond Flip Doubles Its Value in One Year [Curbed SF]
· Pacific Heights Penthouse TIC Flips for $1.34M Gain [Curbed SF]
· Inside the $1.9M Gain of a Richmond Arts & Crafts Flip [Curbed SF]
· Before & After Photos of Richmond Flip That Added $1.05M [Curbed SF]
· Sunnyside Flip Doubles in Value in Only Seven Months [Curbed SF]
· Nine Months Later and Bernal Heights Flip Gains Nearly $900K [Curbed SF]
· Sea Cliff Mega Manse Gets a Contempoary Makeover [Curbed SF]
· A Year Later and $2.325M More: 507 Capp in the Mission [Curbed SF]
· Richmond Edwardian Does Triple Somersault, Hits $2.7M Mark [Curbed SF]
· Big Richmond Flip Can't Find a Buyer, Drops Price $246K [Curbed SF]
· This Totally Bonkers Cow Hollow Flip Added $10M to its Price [Curbed SF]
· Glen Park Flipper Adds Modern Style and $915K to Price [Curbed SF]
· Midcentury Megaflip Goes Modern, Adds $5.2M to Price [Curbed SF]

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1. Eureka Valley Duplex

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487 Noe Street
San Francisco, CA 94114

Location: 487-489 Noe St, Eureka Valley
Size: 3-story duplex
Prior sale price: $1.2M
New sale price: $2.8M
Flip factor: 2
The skinny: After living for more than a century as an Edwardian, this building underwent a South Beach makeover, complete with a hideous lilac shellacking, bleached wood floors, and a personality as numbing as a round of Botox. Commenter Neil compared the decor choices to, alas, “cliche bandages straight out of a home depot showroom.”

2. Lake 5-Bedroom House

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135 14th Avenue
San Francisco, CA 94118

Location: 135 14th Ave, Lake
Size: 5-bed, 3.5-bath, 3,080-square-foot single-family home
Prior sale price: $1.112M
New sale price: $3.018M
Flip factor: 2.5
The skinny: After a down-to-the-studs reno that added a bedroom, the flippers cashed in. The house went on the market in late June asking $2.685M and sold at a brisk $333K over asking a month later. Readers were divided: Some complained of blandness, others were more meh. According to commenter JDF, the retouch will be out of date within five years anyway.

3. Noe Valley 3-Bed Home/2-Bed Cottage

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212 Chattanooga Street
San Francisco, CA 94114

Location: 212 and 212A Chattanooga St, Noe Valley
Size: 3-bed, 3.5-bath single-family home; 2-bed, 2-bath rear cottage
Prior sale price: $750K; $450K
New sale price: $2.495M; $1.65M
Flip factor: 3; 3.5
The skinny: Flippers transformed two run-down, overgrown homes into sleek modern abodes and more than tripled their value in less than two years’ time. Commenter mercury613 actually went to the open house and deemed the cottage “just as generic as the large house.”

4. Glen Park 4-Bedroom House

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101 Miguel Street
San Francisco, CA 94131

Location: 101 Miguel St, Glen Park
Size: 4-bed, 3.5-bath single-family home
Prior sale price: $849K
New sale price: $2.703M
Flip factor: 3
The skinny: This was a multistep flip: The flipper who paid $849K turned around and sold the house for $1.1M three weeks later. The new flipper worked fast, eliminating a bedroom, adding two baths, and installing glass decks in seven months’ time. Now the frumpy (but kinda sweet, '70s-tastic) wood-paneled walls are gone and there's enough recessed lighting to fill an aisle at Home Depot.

5. Noe Valley 2-Bedroom House

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1433 Diamond Street
San Francisco, CA 94131

Location: 1433 Diamond St, Noe Valley
Size: 2-bed, 1-bath, 1,175-square-foot single-family home
Prior sale price: $799K
New sale price: $3.425M
Flip factor: 4
The skinny: This is another two-stepper: The first flipper bought for $799K and sold for $1.05M a month later; the second flipper, developer Eastwood, did the rebuild, transforming the place into a modern box with a not-half-bad wood-edged, steel-windowed facade. Commenter Financial Samurai noted (approvingly), “I could see a wealthy techie buying this no problem.”

6. Outer Sunset 5-Bedroom House

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1454 40th Avenue
San Francisco, CA 94122

Location: 1454 40th Ave, Outer Sunset
Size: 5-bed, 4.5-bath, 2,534-square-foot single-family home
Prior sale price: $745K
New sale price: $1.545M
Flip factor: 2
The skinny: The flippers added a bedroom to this once-stuffy 1928 home and lightened things up quite a bit. The old kitchen was pretty dismal, no complaints here.

7. Inner Richmond 5-Bedroom House

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324 3rd Avenue
San Francisco, CA 94118

Location: 324 Third Ave, Inner Richmond
Size: 5-bed, 4.5-bath, 3,565-square-foot single-family home
Prior sale price: $1.46M
New sale price: $2.9M
Flip factor: 2
The skinny: A totally livable if a bit cramped quaint pink house went under the knife and re-emerged with its chandeliers removed and its traditional staircase replaced by a steel impostor. A new bedroom and half bath appeared. The results are a bit Pier 1-ish, but no one will miss that acid-toned bathroom. Commenter Sierrajeff found even the original garge door “far preferable to that obviously plastic Home Depot thing.” The flippers were only modestly punished by taking a $95K price cut from their ask of $2.995M.

8. Noe Valley 4-Bedroom House

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235 28th Street
San Francisco, CA 94131

Location: 235 28th St, Noe Valley
Size: 4-bed, 3.5-bath single-family home
Prior sale price: $1.3M
New sale price: $3.364M
Flip factor: 2.5
The skinny: Even before the flip, this house was the object of a bidding war that started at $899K and ended an additional $400K later. The winning flipper painted over the pink exterior and marketed the results as the Noe Valley “White House.” Commenters fought over this one: Some were scandalized, including commenter Gail, who actually grew up in the house! Commenter FriscoStu, was not so charitable, comparing the before photos to “an asbestos museum.”

9. Richmond 4-Bedroom House

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3025 Balboa Street
San Francisco, CA 94121

Location: 3025 Balboa St, the Richmond
Size: 4-bed, 3-bath single-family home
Prior sale price: $583K
New sale price: $1.35M
Flip factor: 2
The skinny: When flippers picked up this 1932 home last summer, it was a blotchy purple, with the street number spray-painted on the front. The total overhaul brought in gleaming floors, the usual stainless steel, and paint strictly from can. In less than a year they had a deal pending for $155K over the ask. No objections to the reno, but we’d kind of rather hang out with the original owners.

10. Pacific Heights 4-Bedroom House

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2302 Divisadero Street
San Francisco, CA 94115

Location: 2302 Divisadero, Pacific Heights
Size: 4-bed, 2.5-bath, 2,280-square-foot single-family home
Prior sale price: $1,057,500
New sale price: $2.4M
Flip factor: 2
The skinny: This top-floor TIC in a building from 1900 lost walls, a fireplace, and interior French doors to a modern open floor plan. The redone kitchen and cooled-down, Restoration Hardware-ish palette (plus a second parking spot thrown in) contributed to the $1.342 million price gain.

11. Richmond 5-Bedroom House

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339 31st Avenue
San Francisco, CA 94121

Location: 339 31st Ave, the Richmond
Size: 5-bed, 4.5-bath, 3,238-square-foot single-family home
Prior sale price: $1.08M
New sale price: $2.988M
Flip factor: 2.5
The skinny: When it was originally purchased back in 2012, this 1912 Arts & Crafts was pretty inhospitable, with an unworkable kitchen, damaged floors and walls, and a garish pink bedroom that even a marshmallow Peep would deem overzealous. The flippers took care of all that and then some. The kitchen is far more pleasant, but the funky stone fireplace is now unrecognizable, and a wood-paneled room is now plaster—or at least painted over. Commenters piled on their dismay. In the words of commenter GetOffTheIvy: “The fireplace change was the easy way out, I hope they saved the pieces and donated them to a Habitat for Humanity Restore so some one can reuse them.”

12. Inner Richmond 4-Bedroom House

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364 3rd Avenue
San Francisco, CA 94118

Location: 364-366 3rd Ave, Inner Richmond
Size: 4-bed, 4-bath, 2,682-square-foot single-family home
Prior sale price: $940K
New sale price: $2.3M
Flip factor: 2
The skinny: This top-to-bottom redo transformed a duplex into a single-family home, tricked out with amenities like a soaking tub and rain shower in the master suite, basement guest quarters, and an improbably dense lawn. A bay window seems to have been rather senselessly eliminated, but otherwise the blandness looks mostly harmless. The before-and-afters prompted commenter Christopher VerPlanck to lament, “Who wants every house in San Francisco to look like a 1980s condo in Walnut Creek?”

13. Sunnyside 2-Bedroom House

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142 Marston Avenue
San Francisco, CA 94112

Location: 142 Marston Ave, Sunnyside
Size: 2-bed, 1-bath, 2,813-square-foot single-family home
Prior sale price: 300K
New sale price: $768K
Flip factor: 2
The skinny: After a fly-by seven-month remodel, this little home went back on the market asking $649K and outdid itself by $119K in two months’ time. Not as fancy or high-stakes as some of the others here, but nearly half a mil says these flippers probably don’t care.

14. Bernal Heights 3-Bedroom House

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228 Ellsworth Street
San Francisco, CA 94110

Location: 228 Ellsworth St, Bernal Heights
Size: 3-bed, 2-bath, 1,410-square-foot single-family home
Prior sale price: $705K
New sale price: $1.6M
Flip factor: 2
The skinny: This little house gained nearly $900K in just nine months. There weren’t any before pics to speak of, so we find ourselves kind of falling for the wood floors, glass doors, and sun deck. Commenter Mark Pritchard went to the open house and liked what he saw—“They did a really nice job and used good quality materials and fixtures,” he says—while lamenting hot, hot Bernal’s runaway prices.

15. Sea Cliff 3-Bedroom House

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101 27th Avenue
San Francisco, CA 94121

Location: 101 27th Ave, Sea Cliff
Size: 3-bed, 4.5-bath, 2,660-square-foot single-family home
Prior sale price: $1.575M
New sale price: $3.925M
Flip factor: 2
The skinny: This total revamp of a somewhat hideously shingled midcentury number brought modern lines and big windows to the facade and antiseptic flatness to the interiors. The house went on the market last October, failed to find a buyer at nearly $4M, and relisted in July for $3.75M. The property sold in August without losing face, achieving better than a 100 percent gain. Perhaps commenter GetOffTheIvy put it best: “It is a nice generic redo of a nice generic (for its build year) house.”

16. Mission 5-Bedroom House

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507 Capp Street
San Francisco, CA 94110

Location: 507 Capp St, the Mission
Size: 5-bed, 6-bath, 4,869-square-foot single-family home
Prior sale price: $1.275M
New sale price: $3.525M
Flip factor: 2.5
The skinny: Without any before photos to ogle, we can only guess from an old Google Street View shot of the facade that this three-level Queen Anne needed some love. And it seems to have gotten it: The original columns and carved mantlepieces are still there, as is a formidably dark fireplace and some wonderfully canted upper-floor bedrooms. No quibbles here. Reading all of our minds, commenter quakefest said, “I’d love to be that asshole.”

17. Richmond 4-Bedroom House

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422 21st Avenue
San Francisco, CA 94121

Location: 422 21st Ave, the Richmond
Size: 4-bed, 3.5-bath, 3,500-square-foot single-family home
Prior sale price: $908K
New ask: $2.796M
Flip factor: 3
The skinny: The flippers subtracted some unsightly mustard paint and added a bedroom and $1.888M to the price. Commenters generally applauded the reno, but there were some grumbles about the now-quite-drab gray facade and the destruction of the brick fireplace—which seems to have been at least partly preserved behind the new mantle rather than disappeared entirely.

18. Richmond 4-Bedroom House

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367 17th Avenue
San Francisco, CA 94121

Location: 367 17th Ave, the Richmond
Size: 4-bed, 3.5-bath, 3,293-square-foot single-family home
Prior sale price: $850K
New sale price: $2.165M
Flip factor: 2.5
The skinny: With just a few scrappy before photos, this place looked like a bit of a mess; the flippers gutted the house and added a bedroom and a garage. When they didn’t get their initial ask of $2.495M, in June they chopped the price by $246K to land at $2.249M—on account of the “fugly” facade and the noisy, Geary-adjacent location, according to our commenters. The final sale price, which went through last month, lopped off another $84K.

19. Cow Hollow 4-Bedroom House

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2680 Green Street
San Francisco, CA 94123

Location: 2680 Green St, Cow Hollow
Size: 4-bed, 6.5-bath single-family home
Prior sale price: $3.1M
New ask: $13M
Flip factor: 4
The skinny: When it sold in 2010, this lovely late-late Edwardian was already in great shape, with a rich wood coffered ceiling, moldings in good order, the works. Nevertheless, developer Troon Pacific took out a $3.6M construction loan and set about transforming it into a slick eco-palace with a spa and wine room. The audacious new ask—$13M!—sent the house all the way to the number-eight spot on our map of the city’s 25 most expensive homes for sale. Commenter Yenta del Bovolo sniffed, “It now has all the charm of an Apple store.” It’s been on the market three months now and the price isn’t budging.

20. Glen Park 3-Bedroom House

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419 Baden Street
San Francisco, CA 94131

Location: 419 Baden St, Glen Park
Size: 3-bed, 3.5-bath, 2,790-square-foot single-family home
Prior sale price: $1.08M
New sale price: $2.15M
Flip factor: "2"
The skinny: This remodeled 1980s rancher is just $10K shy of a 100 percent price jump, and we’re sneaking it in under the wire because it’s one of the better renos we’ve seen. These flippers rescued it from a vortex of bad carpeting and a regrettable, Brady Bunch-era stone fireplace and remade it as a contemporary abode with a functional kitchen and a hot tub that is no longer depressing, if a little CGI-looking.

21. Presidio Heights 5-Bedroom House

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16 Spruce Street
San Francisco, CA 94118

Location: 16 Spruce St, Presidio Heights
Size: 5-bed, 5-bath single-family home
Prior sale price: $4.3M
New sale price: $9.5M
Flip factor: 2
The skinny: San Francisco’s 10th most expensive home bills itself as "an inspired re-imagination of a Mid-Century modern residence,” but the midcentury part, at least, is lost on us. Unfortunately, we couldn’t locate any before-renovation pics, so we can only guess what preceded all those glass railings and the riverbed-rock Zen garden.

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1. Eureka Valley Duplex

487 Noe Street, San Francisco, CA 94114

Location: 487-489 Noe St, Eureka Valley
Size: 3-story duplex
Prior sale price: $1.2M
New sale price: $2.8M
Flip factor: 2
The skinny: After living for more than a century as an Edwardian, this building underwent a South Beach makeover, complete with a hideous lilac shellacking, bleached wood floors, and a personality as numbing as a round of Botox. Commenter Neil compared the decor choices to, alas, “cliche bandages straight out of a home depot showroom.”

487 Noe Street
San Francisco, CA 94114

2. Lake 5-Bedroom House

135 14th Avenue, San Francisco, CA 94118

Location: 135 14th Ave, Lake
Size: 5-bed, 3.5-bath, 3,080-square-foot single-family home
Prior sale price: $1.112M
New sale price: $3.018M
Flip factor: 2.5
The skinny: After a down-to-the-studs reno that added a bedroom, the flippers cashed in. The house went on the market in late June asking $2.685M and sold at a brisk $333K over asking a month later. Readers were divided: Some complained of blandness, others were more meh. According to commenter JDF, the retouch will be out of date within five years anyway.

135 14th Avenue
San Francisco, CA 94118

3. Noe Valley 3-Bed Home/2-Bed Cottage

212 Chattanooga Street, San Francisco, CA 94114

Location: 212 and 212A Chattanooga St, Noe Valley
Size: 3-bed, 3.5-bath single-family home; 2-bed, 2-bath rear cottage
Prior sale price: $750K; $450K
New sale price: $2.495M; $1.65M
Flip factor: 3; 3.5
The skinny: Flippers transformed two run-down, overgrown homes into sleek modern abodes and more than tripled their value in less than two years’ time. Commenter mercury613 actually went to the open house and deemed the cottage “just as generic as the large house.”

212 Chattanooga Street
San Francisco, CA 94114

4. Glen Park 4-Bedroom House

101 Miguel Street, San Francisco, CA 94131

Location: 101 Miguel St, Glen Park
Size: 4-bed, 3.5-bath single-family home
Prior sale price: $849K
New sale price: $2.703M
Flip factor: 3
The skinny: This was a multistep flip: The flipper who paid $849K turned around and sold the house for $1.1M three weeks later. The new flipper worked fast, eliminating a bedroom, adding two baths, and installing glass decks in seven months’ time. Now the frumpy (but kinda sweet, '70s-tastic) wood-paneled walls are gone and there's enough recessed lighting to fill an aisle at Home Depot.

101 Miguel Street
San Francisco, CA 94131

5. Noe Valley 2-Bedroom House

1433 Diamond Street, San Francisco, CA 94131

Location: 1433 Diamond St, Noe Valley
Size: 2-bed, 1-bath, 1,175-square-foot single-family home
Prior sale price: $799K
New sale price: $3.425M
Flip factor: 4
The skinny: This is another two-stepper: The first flipper bought for $799K and sold for $1.05M a month later; the second flipper, developer Eastwood, did the rebuild, transforming the place into a modern box with a not-half-bad wood-edged, steel-windowed facade. Commenter Financial Samurai noted (approvingly), “I could see a wealthy techie buying this no problem.”

1433 Diamond Street
San Francisco, CA 94131

6. Outer Sunset 5-Bedroom House

1454 40th Avenue, San Francisco, CA 94122

Location: 1454 40th Ave, Outer Sunset
Size: 5-bed, 4.5-bath, 2,534-square-foot single-family home
Prior sale price: $745K
New sale price: $1.545M
Flip factor: 2
The skinny: The flippers added a bedroom to this once-stuffy 1928 home and lightened things up quite a bit. The old kitchen was pretty dismal, no complaints here.

1454 40th Avenue
San Francisco, CA 94122

7. Inner Richmond 5-Bedroom House

324 3rd Avenue, San Francisco, CA 94118

Location: 324 Third Ave, Inner Richmond
Size: 5-bed, 4.5-bath, 3,565-square-foot single-family home
Prior sale price: $1.46M
New sale price: $2.9M
Flip factor: 2
The skinny: A totally livable if a bit cramped quaint pink house went under the knife and re-emerged with its chandeliers removed and its traditional staircase replaced by a steel impostor. A new bedroom and half bath appeared. The results are a bit Pier 1-ish, but no one will miss that acid-toned bathroom. Commenter Sierrajeff found even the original garge door “far preferable to that obviously plastic Home Depot thing.” The flippers were only modestly punished by taking a $95K price cut from their ask of $2.995M.

324 3rd Avenue
San Francisco, CA 94118

8. Noe Valley 4-Bedroom House

235 28th Street, San Francisco, CA 94131

Location: 235 28th St, Noe Valley
Size: 4-bed, 3.5-bath single-family home
Prior sale price: $1.3M
New sale price: $3.364M
Flip factor: 2.5
The skinny: Even before the flip, this house was the object of a bidding war that started at $899K and ended an additional $400K later. The winning flipper painted over the pink exterior and marketed the results as the Noe Valley “White House.” Commenters fought over this one: Some were scandalized, including commenter Gail, who actually grew up in the house! Commenter FriscoStu, was not so charitable, comparing the before photos to “an asbestos museum.”

235 28th Street
San Francisco, CA 94131

9. Richmond 4-Bedroom House

3025 Balboa Street, San Francisco, CA 94121

Location: 3025 Balboa St, the Richmond
Size: 4-bed, 3-bath single-family home
Prior sale price: $583K
New sale price: $1.35M
Flip factor: 2
The skinny: When flippers picked up this 1932 home last summer, it was a blotchy purple, with the street number spray-painted on the front. The total overhaul brought in gleaming floors, the usual stainless steel, and paint strictly from can. In less than a year they had a deal pending for $155K over the ask. No objections to the reno, but we’d kind of rather hang out with the original owners.

3025 Balboa Street
San Francisco, CA 94121

10. Pacific Heights 4-Bedroom House

2302 Divisadero Street, San Francisco, CA 94115

Location: 2302 Divisadero, Pacific Heights
Size: 4-bed, 2.5-bath, 2,280-square-foot single-family home
Prior sale price: $1,057,500
New sale price: $2.4M
Flip factor: 2
The skinny: This top-floor TIC in a building from 1900 lost walls, a fireplace, and interior French doors to a modern open floor plan. The redone kitchen and cooled-down, Restoration Hardware-ish palette (plus a second parking spot thrown in) contributed to the $1.342 million price gain.

2302 Divisadero Street
San Francisco, CA 94115

11. Richmond 5-Bedroom House

339 31st Avenue, San Francisco, CA 94121

Location: 339 31st Ave, the Richmond
Size: 5-bed, 4.5-bath, 3,238-square-foot single-family home
Prior sale price: $1.08M
New sale price: $2.988M
Flip factor: 2.5
The skinny: When it was originally purchased back in 2012, this 1912 Arts & Crafts was pretty inhospitable, with an unworkable kitchen, damaged floors and walls, and a garish pink bedroom that even a marshmallow Peep would deem overzealous. The flippers took care of all that and then some. The kitchen is far more pleasant, but the funky stone fireplace is now unrecognizable, and a wood-paneled room is now plaster—or at least painted over. Commenters piled on their dismay. In the words of commenter GetOffTheIvy: “The fireplace change was the easy way out, I hope they saved the pieces and donated them to a Habitat for Humanity Restore so some one can reuse them.”

339 31st Avenue
San Francisco, CA 94121

12. Inner Richmond 4-Bedroom House

364 3rd Avenue, San Francisco, CA 94118

Location: 364-366 3rd Ave, Inner Richmond
Size: 4-bed, 4-bath, 2,682-square-foot single-family home
Prior sale price: $940K
New sale price: $2.3M
Flip factor: 2
The skinny: This top-to-bottom redo transformed a duplex into a single-family home, tricked out with amenities like a soaking tub and rain shower in the master suite, basement guest quarters, and an improbably dense lawn. A bay window seems to have been rather senselessly eliminated, but otherwise the blandness looks mostly harmless. The before-and-afters prompted commenter Christopher VerPlanck to lament, “Who wants every house in San Francisco to look like a 1980s condo in Walnut Creek?”

364 3rd Avenue
San Francisco, CA 94118

13. Sunnyside 2-Bedroom House

142 Marston Avenue, San Francisco, CA 94112

Location: 142 Marston Ave, Sunnyside
Size: 2-bed, 1-bath, 2,813-square-foot single-family home
Prior sale price: 300K
New sale price: $768K
Flip factor: 2
The skinny: After a fly-by seven-month remodel, this little home went back on the market asking $649K and outdid itself by $119K in two months’ time. Not as fancy or high-stakes as some of the others here, but nearly half a mil says these flippers probably don’t care.

142 Marston Avenue
San Francisco, CA 94112

14. Bernal Heights 3-Bedroom House

228 Ellsworth Street, San Francisco, CA 94110

Location: 228 Ellsworth St, Bernal Heights
Size: 3-bed, 2-bath, 1,410-square-foot single-family home
Prior sale price: $705K
New sale price: $1.6M
Flip factor: 2
The skinny: This little house gained nearly $900K in just nine months. There weren’t any before pics to speak of, so we find ourselves kind of falling for the wood floors, glass doors, and sun deck. Commenter Mark Pritchard went to the open house and liked what he saw—“They did a really nice job and used good quality materials and fixtures,” he says—while lamenting hot, hot Bernal’s runaway prices.

228 Ellsworth Street
San Francisco, CA 94110

15. Sea Cliff 3-Bedroom House

101 27th Avenue, San Francisco, CA 94121

Location: 101 27th Ave, Sea Cliff
Size: 3-bed, 4.5-bath, 2,660-square-foot single-family home
Prior sale price: $1.575M
New sale price: $3.925M
Flip factor: 2
The skinny: This total revamp of a somewhat hideously shingled midcentury number brought modern lines and big windows to the facade and antiseptic flatness to the interiors. The house went on the market last October, failed to find a buyer at nearly $4M, and relisted in July for $3.75M. The property sold in August without losing face, achieving better than a 100 percent gain. Perhaps commenter GetOffTheIvy put it best: “It is a nice generic redo of a nice generic (for its build year) house.”

101 27th Avenue
San Francisco, CA 94121

16. Mission 5-Bedroom House

507 Capp Street, San Francisco, CA 94110

Location: 507 Capp St, the Mission
Size: 5-bed, 6-bath, 4,869-square-foot single-family home
Prior sale price: $1.275M
New sale price: $3.525M
Flip factor: 2.5
The skinny: Without any before photos to ogle, we can only guess from an old Google Street View shot of the facade that this three-level Queen Anne needed some love. And it seems to have gotten it: The original columns and carved mantlepieces are still there, as is a formidably dark fireplace and some wonderfully canted upper-floor bedrooms. No quibbles here. Reading all of our minds, commenter quakefest said, “I’d love to be that asshole.”

507 Capp Street
San Francisco, CA 94110

17. Richmond 4-Bedroom House

422 21st Avenue, San Francisco, CA 94121

Location: 422 21st Ave, the Richmond
Size: 4-bed, 3.5-bath, 3,500-square-foot single-family home
Prior sale price: $908K
New ask: $2.796M
Flip factor: 3
The skinny: The flippers subtracted some unsightly mustard paint and added a bedroom and $1.888M to the price. Commenters generally applauded the reno, but there were some grumbles about the now-quite-drab gray facade and the destruction of the brick fireplace—which seems to have been at least partly preserved behind the new mantle rather than disappeared entirely.

422 21st Avenue
San Francisco, CA 94121

18. Richmond 4-Bedroom House

367 17th Avenue, San Francisco, CA 94121

Location: 367 17th Ave, the Richmond
Size: 4-bed, 3.5-bath, 3,293-square-foot single-family home
Prior sale price: $850K
New sale price: $2.165M
Flip factor: 2.5
The skinny: With just a few scrappy before photos, this place looked like a bit of a mess; the flippers gutted the house and added a bedroom and a garage. When they didn’t get their initial ask of $2.495M, in June they chopped the price by $246K to land at $2.249M—on account of the “fugly” facade and the noisy, Geary-adjacent location, according to our commenters. The final sale price, which went through last month, lopped off another $84K.

367 17th Avenue
San Francisco, CA 94121

19. Cow Hollow 4-Bedroom House

2680 Green Street, San Francisco, CA 94123

Location: 2680 Green St, Cow Hollow
Size: 4-bed, 6.5-bath single-family home
Prior sale price: $3.1M
New ask: $13M
Flip factor: 4
The skinny: When it sold in 2010, this lovely late-late Edwardian was already in great shape, with a rich wood coffered ceiling, moldings in good order, the works. Nevertheless, developer Troon Pacific took out a $3.6M construction loan and set about transforming it into a slick eco-palace with a spa and wine room. The audacious new ask—$13M!—sent the house all the way to the number-eight spot on our map of the city’s 25 most expensive homes for sale. Commenter Yenta del Bovolo sniffed, “It now has all the charm of an Apple store.” It’s been on the market three months now and the price isn’t budging.

2680 Green Street
San Francisco, CA 94123

20. Glen Park 3-Bedroom House

419 Baden Street, San Francisco, CA 94131

Location: 419 Baden St, Glen Park
Size: 3-bed, 3.5-bath, 2,790-square-foot single-family home
Prior sale price: $1.08M
New sale price: $2.15M
Flip factor: "2"
The skinny: This remodeled 1980s rancher is just $10K shy of a 100 percent price jump, and we’re sneaking it in under the wire because it’s one of the better renos we’ve seen. These flippers rescued it from a vortex of bad carpeting and a regrettable, Brady Bunch-era stone fireplace and remade it as a contemporary abode with a functional kitchen and a hot tub that is no longer depressing, if a little CGI-looking.

419 Baden Street
San Francisco, CA 94131

21. Presidio Heights 5-Bedroom House

16 Spruce Street, San Francisco, CA 94118

Location: 16 Spruce St, Presidio Heights
Size: 5-bed, 5-bath single-family home
Prior sale price: $4.3M
New sale price: $9.5M
Flip factor: 2
The skinny: San Francisco’s 10th most expensive home bills itself as "an inspired re-imagination of a Mid-Century modern residence,” but the midcentury part, at least, is lost on us. Unfortunately, we couldn’t locate any before-renovation pics, so we can only guess what preceded all those glass railings and the riverbed-rock Zen garden.

16 Spruce Street
San Francisco, CA 94118