In September 2026, a five-bedroom Victorian at 1119 Castro Street sold for $7.7 million, or $2,240 per square foot, after coming to market in late August at $5.5 million. Divide the price by the per-foot figure and the house comes to roughly 3,440 square feet. Under the zoning now in effect across Noe Valley, no new house or expansion there can produce a single home that large.
The buyers paid for the views and the finishes. They also paid for something no developer can make more of on that side of Twin Peaks, and that explains Noe Valley's 2026 prices better than any median does.
The rule that set the ceiling
The control is San Francisco's Central Neighborhoods Large Residence Special Use District, codified at Planning Code Section 249.92. The Board of Supervisors expanded it through Ordinance 253-25, sponsored by Supervisor Rafael Mandelman. The Board passed it on December 9, 2025, and the Mayor approved it on December 17, 2025. Its boundary runs along streets that include Valencia, 29th Street, Monterey Boulevard and Twin Peaks Boulevard, which puts Noe Valley inside it.
For lots zoned RH within the district, the ordinance text says no new residential development or expansion may create a dwelling unit larger than 3,000 square feet of gross floor area. The one exception is an existing unit whose total increase stays under 15%. An earlier ordinance, 248-23, had already scheduled the district's Conditional Use review process to end with 2024 and the 3,000-square-foot limit to take over afterward.
The city's larger rezoning efforts left the rule in place. The SF Family Zoning Plan was signed on December 12, 2025, and the district was expanded in a separate ordinance the same month. San Francisco's SB 79 Alternative Plan, signed May 8, 2026, adds capacity on certain eligible sites through a new code section and does not repeal Section 249.92. The section appears in the current 2026 edition of the Planning Code.
Most Noe Valley houses started out far below that ceiling. The SF Standard reported in May that the neighborhood's homes were built for a working-class clientele of carpenters, tailors and bakers and often top out at about 2,000 square feet. Many have since been torn down and rebuilt or gutted behind their Victorian facades. The Standard also reported a local agent's view that the size limit has driven up the value of homes expanded or rebuilt before the rule took effect.
Where the biggest checks have gone
The 2026 sales with published sizes all fall on the far side of the line.
| Property | Timing | Price | Size | Relative to the 3,000 sq ft cap |
|---|---|---|---|---|
| Jersey Street rebuild | Sold April 2026 | $7.6 million, up from almost $5 million in 2020 | Nearly 3,500 sq ft | Above |
| 1119 Castro Street | Listed late August, closed September 2026 | $7.7 million on a $5.5 million ask | About 3,440 sq ft, derived from $2,240 per sq ft | Above |
| 471 Hoffman Avenue | Listed September 11, closed September 2026 | $9.1 million on an ask just under $7 million | Not published; five bedrooms, five baths | Not published |
The Hoffman sale, according to MLS data cited by The Real Deal, was the most expensive Noe Valley sale of the past 12 months. Next came $8.6 million for 4268 26th Street in March. An offer was accepted seven hours after the listing went live. The Castro Street house drew five offers, all cash. The listing side had expected a price in the low to mid $6 million range. The house had last traded in 2024 for just under $4.8 million.
A 2020 rebuild gained about $2.6 million in six years. A 2024 purchase gained nearly $3 million in about two. Appreciation that steep fits a type of house that can no longer be produced. A market rising evenly would look different.
What a neighborhood median is measuring
Noe Valley closes relatively few houses in any given month, so a short-window median is heavily shaped by which houses happened to close. When a handful of homes expanded before the cap sell in the same summer window, the median moves toward them. An original 2,000-square-foot cottage on the next block hasn't necessarily appreciated by the same percentage. A summer median describes that season's mix of sales. It is a poor estimate of what any particular house is worth.
The overbidding is concentrated in this part of the city. The SF Standard reported that 144 San Francisco homes sold for at least $1 million over asking in the first half of 2026, compared with eight in the same period of 2025. About a third of those were in the ZIP codes that include Noe Valley and Glen Park.
What "expansion potential" is worth now
This changes how to value a house in Noe Valley. Until recently, a modest Victorian on a deep lot came with an implied option to grow into a large home. Inside the district, that option now stops at 3,000 square feet per dwelling unit. The ordinance also counts recent history against you. Before writing an offer that prices in an addition, a buyer's due diligence should answer four questions.
- How large is the existing unit today, in gross floor area as the Planning Code defines it? For this rule the ordinance excludes accessory parking from the count. In multi-unit buildings it excludes shared stairwells and other common spaces. A 2,000-square-foot cottage has roughly 1,000 square feet of headroom. A house already near 3,000 may be limited to an addition under 15%.
- What has been built under permit in the last ten years? The ordinance counts any expansion permitted in the previous ten years toward the increase, but excludes permits issued before January 1, 2022. A seller's 2023 addition may already have used up part of the 15% a buyer thought was available.
- Is any of the finished space unpermitted? Floor area built without a valid permit counts toward the increase no matter when it was built. In older housing stock, a finished basement room or converted attic belongs on the permit-history checklist that goes with the San Francisco disclosure package.
- Is the lot actually in the district? The boundary is drawn street by street and on Zoning Map sheets ZN06, ZN07, ZN11 and ZN12. A parcel lookup with SF Planning settles it more reliably than a neighborhood name.
The cap applies per dwelling unit. The frozen ordinance text is also a redline of amendments, so the precise current wording for a given parcel should be confirmed with SF Planning or a land-use attorney before an offer depends on it. This article is not legal advice.
For sellers, the same rule works in the other direction. A house that was expanded before the cap is in short supply, and its listing materials should say so plainly. Documented square footage, permit history and the date work was finished are now part of the value. Without them, a buyer has to guess.
Why cash keeps reaching the top of this market
Large homes that can't be replicated attract a particular kind of buyer. Old Republic Title data reported by the SF Standard in September found that one in three San Francisco home sales between January 1 and September 1, 2026 were all cash. For single-family homes above $6 million, the share was three in four. The same reporting described AI-industry buyers whose pre-IPO stock is still locked up taking out quiet loans against that equity so they can bid in cash.
The local draw adds to the pressure. The Standard's May profile pointed to the 24th Street corridor, with names like Small Frys, Trad Bone Broth and Haystack Pizza. It also pointed to the Slow Sanchez route, which carries more than 1,000 pedestrians on a typical Saturday, and to the neighborhood's position as the last San Francisco stop for Google and Apple shuttles before the highway. We covered this summer's changes on the street in our 24th Street rundown. Steady demand for a fixed number of large homes produces competitive sales like the seven-hour Hoffman Avenue sale.
A few questions we hear
Does the cap stop a house from being sold at its current size? The rule governs new residential development and expansions, so an existing home that already exceeds 3,000 square feet is not shrunk by it. Growing it further is limited to the under-15% exception.
Does it apply to projects already in the pipeline? The text applies to complete development applications submitted on or after January 1, 2022. It also contains a carve-out for certain applications filed before June 4, 2024 on lots newly added to the district. Whether a project or plan set you are inheriting qualifies is a question for SF Planning.
How should Noe Valley compare with neighboring districts? Neighborhood medians mix house sizes, so comparing price per square foot for similar original-stock homes tells you more. Our guide to how top San Francisco neighborhoods differ for buyers is a starting point.
If you own an expanded Noe Valley home, or are weighing a purchase that depends on room to grow, Wynne + Morgensen can review the permit history and square footage with you before the price is set. Request a Private Consultation, or begin with a confidential home valuation.