Property profile

3900 21st St San Francisco, CA 94114

OFF-MARKET
Residential income homes
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Property ID
US09-5999381
4,199 SF 0.1 ac Built 1910
Last sale Jun 2017·$949,000
Individually Owned Owner of record is an individual. 2-yr Hold Held for 2 years. Absentee Owner Owner mailing address differs from the property address.
Market Trends Soon

Ownership intelligence

Who controls the opportunity?

Owner of record from public deeds, plus portfolio, hold profile and investor signals where the data supports them. Included with a plan.

Owner contacts

Can we reach the decision maker?

Skip-traced phones and e-mails of the owner. Included with a plan.

Debts

What is owed, to whom, and when it comes due

Recorded lenders, amounts and estimated maturities of the owner's loan book — included with a plan.

Property tax · 2024

What does the county charge?
$8k
Tax billed · 2024
Assessed value$631k
Assessed land$304k
Assessed improvement$327k
Effective rate1.31%

Value estimate

· Nov 2026
$985k
$887k – $1.08M
AI approach$985k
Submarket $/SF estimate$781k

Realmo valuation models over county records and 6 qualifying comparable sales.

Recently sold

What actually traded nearby?
$412/SF
ZIP average, outlier-cleaned · 173 recorded sales of this use type
Observed band · Q1–Q3$186 – $578
Qualifying comparables6

Cap rate analysis

How does the asset earn?

No income signal is modeled for this parcel yet — the Cap Rates tab runs the workflow.

Zoning insight

What can be built here?
RH2
JurisdictionSAN FRANCISCO

Location intelligence

Which uses thrive at this corner?
Best fit: Law Firm
Demand heat for this use is drawn on the map · LocInt grid
Demand index
Law Firm29.6
Auto Parts Store14.4
Nursing Home11.3

Location

3900 21st St San Francisco, CA 94114-2805
County assessor Recorded deeds · 4 transfers 6 qualifying comp sales Zoning catalog

Every figure names its source: public record, benchmark, or modeled. Coverage varies by property — thin data is stated as missing, never invented.

Comparables

6 recorded sales · 17 properties nearby
Recent sales nearby
6 recorded sales in this ZIP, last 8 years
Address Sale price Sold Size
257 Church, San Francisco, CA 94114-1310 $554,000 Feb 2025 4,500 SF
685 Noe, San Francisco, CA 94114-2882 $3,880,000 Dec 2024 4,721 SF
4187 17th, San Francisco, CA 94114-1984 $1,600,000 Jul 2024 3,790 SF
68 Sanchez, San Francisco, CA 94114-1157 $1,358,000 May 2024 4,824 SF
4348 18th, San Francisco, CA 94114-2427 $250,500 Apr 2024 4,080 SF
31 Landers, San Francisco, CA 94114-4303 $1,310,000 Apr 2024 4,730 SF
Sale prices and dates as our records hold them, one row per building. A deed can cover more of a building than the size shown, so read the price against the size rather than dividing one by the other.
Comparable nearby
6 properties of the same type nearby
Research This Page with AI

Rey answers here. ChatGPT, Grok and Claude get the same data packet.

Includes: Price & PSF · Cap rate · Location · Zoning

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