Downtown San Diego Hardly Builds Condos Anymore. So Why Are Its Resale Condos Sitting?

In October 2026, the median sale price for a Downtown San Diego condo or townhome was $659,950. The median for attached homes across San Diego County was $658,000. Downtown inventory, though, was moving far more slowly. According to the Greater San Diego Association of REALTORS® 92101 Local Market Update, downtown had 7.6 months of attached-home supply that month, while the countywide report showed 4.0.

That gap runs against what you would expect. Downtown has had almost no new for-sale towers in years, and limited new supply normally props up resale. In 92101 it hasn't. The likely reason is that a downtown condo's competition is mostly the apartment tower down the block, not other condos.

What a seller in 92101 is facing this fall

Here are the October 2026 attached-home numbers for downtown and the county side by side, from the San Diego MLS data SDAR published on November 5, 2026.

The year-to-date numbers show where the backlog comes from. From January through October 2026, downtown condo and townhome sellers put 1,247 new listings on the market, up 5.9% from the same stretch of 2025. Pending sales fell 4.6% to 452, and closed sales fell 7.3% to 429. More sellers listed and fewer buyers committed, so inventory built up month after month.

For a buyer, the 94.5% figure matters most. Downtown sellers in October received a smaller share of their original asking price than sellers across the county did. SDAR's report also says the measure doesn't account for seller concessions. If a seller also paid closing costs or funded repairs, the net was lower still. That gives a downtown buyer more room to negotiate than the median price suggests.

The towers that do get built are rentals

Downtown's skyline keeps growing, but most new towers are apartments, and that comes from law, not from what buyers want. California's 2002 SB 800 created a dedicated set of construction-defect rules for new homes in Civil Code Title 7, starting at Section 895. Owners of attached units and their associations are among the claimants it covers, and the statute sets a 10-year period for actions under that title.

In a November 6 panel in The San Diego Union-Tribune, University of San Diego's Norm Miller explained why the law hits condos especially hard. Because HOAs can sue on behalf of all owners, he said, "a defect found in one unit" can become "a large, quasi-class-action lawsuit." Manpower's Phil Blair told the same panel that builders won't start a condo project "knowing they will be sued at the 10-year point even though the building is in perfect shape."

The 2026 attempt to change that failed. AB 1903 passed the Senate on August 31, 2026. As CalMatters reported, it then died without a final Assembly concurrence vote before the session ended. Housing analyst Gary London told the Union-Tribune he expects new legislation "putting California more in line with other states" in 2027. Until something passes, the rules that push developers toward rentals stay in place.

The exception explains the rule

Andia, Bosa Development's 40-story, 399-unit tower on the block bounded by B Street, C Street, Eighth Avenue and Ninth Avenue, was described by the Union-Tribune in June 2025 as downtown's first condominium tower in eight years. It began construction as an apartment building in 2022. In 2024, Bosa switched it to condos, saying it expected a better return. Analyst Nathan Moeder told the paper why Bosa could make that move when other developers didn't: "Bosa is self-financed so it can be counter cyclical."

Few builders can fund a tower themselves and carry 10 years of defect exposure, which is why so few condo towers get built. At its June 2025 launch, Andia listed one-bedrooms from the high $500,000s and HOA dues of $1,114 to $1,364 a month, with an opening expected around fall 2027. The City of San Diego's July 2026 downtown activity log still listed Andia as under construction. The next proposed condo tower is The Obelisk on 5th, at 1555 Fifth Avenue in Cortez Hill. The city's July 2026 log listed 1555 Fifth as a 24-story, 150-unit project with building permits under review.

So new condo supply is close to zero, and resale inventory still rose 24.1% in a year.

Who a downtown condo is actually competing with

Many of the people who would buy a downtown condo could also rent a new downtown apartment, and right now rentals are discounted. According to the Union-Tribune's October 28 rental report, CoStar put the average downtown rent at $3,106 in late October 2026, up 0.5% from a year earlier, with a 10.7% vacancy rate. San Diego County built 6,927 apartments in 2025, the most in 25 years of data, and CoStar's Joshua Ohl said "we're seeing concessions broadly across the market."

The new towers are also competing on amenities. 800 Broadway, a 40-story rental tower at the east end of Broadway, currently advertises up to two months free plus a $1,000 look-and-lease bonus. Its amenity floors include a speakeasy, game room, and what the building calls San Diego's highest rooftop pool and sky lounge. On a 12-month lease, two free months comes to about a sixth off the year's listed rent.

"Clearly, we overbuilt rental inventory in key urban areas: downtown, (University City), Mission Valley and a few other places." — Gary London, quoted by The San Diego Union-Tribune, October 28, 2026

That pressure reaches a condo two ways. A buyer who would live there compares the full cost of owning, including dues, against a rent that's being discounted. An investor who would lease it out has to price against effective rent after concessions, not the advertised rent. CoStar put the countywide effective rent at about $2,496 a month after concessions, against an average advertised rent of $2,587. Ohl also said he expects few large rent increases in the coming year.

Rental supply also affects the condo market another way. London said some high-end rental projects "might consider converting to condos," though the paper noted conversion rules can be strict. If that happens, the rental surplus would become new condo inventory.

Using this in a 92101 offer

Since the competition comes from discounted rentals, the useful comparison for a condo extends beyond recent condo sales in the same building. Before writing an offer downtown, it helps to work through these:

1. The year-to-date listing trend. Through October 2026, new listings outpaced pending sales. A unit that has sat on the market sits in a building where other owners may be listing too.
2. The effective rent nearby. An investor should estimate income from the discounted rent at competing towers, not their advertised rate.
3. The monthly cost against renting. Dues plus mortgage on a resale unit go head to head with a new tower offering free months and amenity floors. A seller who has accounted for that tends to price accordingly.
4. The gap from original list price. Downtown sellers received 94.5% of original list in October 2026. That is a starting point for negotiating, not a ceiling.
5. The building's own defect and HOA history. The same law that holds back new towers gives associations standing to pursue claims, so the HOA documents deserve a careful read.

Presentation matters here too. A resale unit is being compared with rental floor plans that photograph well and come with a free month or two, and well-staged, well-planned design is one of the few levers a seller fully controls.

Nothing here is legal, tax or financial advice. Statutes like SB 800 apply differently to each building and transaction, so confirm your own situation with a qualified attorney, accountant or lender.

A few questions we hear

Does 7.6 months of supply mean downtown prices are falling? Prices are drifting down, but slowly. The 92101 attached median was $693,700 for January through October 2026, down 3.0% from the same period in 2025. In October alone it was down 2.4% year over year. Months of supply and days on market have moved much more than price.

Will Andia add to resale competition? Andia was still under construction in the city's July 2026 log. In June 2025 its opening was projected for around fall 2027. When it delivers, its 399 units will be the first large batch of new downtown condos in years.

Could the defect law change soon? AB 1903 died in 2026. Several economists on the Union-Tribune's November panel, along with London, think reform is possible, and USD's Alan Gin said consumer attorneys would block it. Any new bill would start in the 2027 session.

If you're weighing a downtown condo against the rental towers around it, or pricing a 92101 unit to sell against two free months down the street, Laura Valente can run your unit against both the October resale data and the concessions in the nearby towers, then plan the design and pricing to match. Start with your Instant Home Valuation.