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© 2026 SHAYA LOWENSTEIN · LYON STAHL INVESTMENT REAL ESTATE830 S PACIFIC COAST HWY, SUITE D-200, EL SEGUNDO, CA 90245SHAYA@LYONSTAHL.COM · DRE #01942326
BUILDINGS/857 WILLIAM ST
/// BUILDING FILE · ROLL 2025

857 WILLIAM ST.

Pomona, CA 91768 · APN 8357-012-020

/// WHERE DO WE REACH YOU?

ONE EMAIL, USED TO KEEP THIS LIST AND TO TELL YOU IF A WATCHED BUILDING LISTS OR SELLS. UNSUBSCRIBE ANY TIME.

UNITS

20

BUILDING SF

23,176

SF / UNIT

1,159

YEAR BUILT

1963

BEDROOMS

60

BATHROOMS

21

USE · CODE 0500

5+ UNITS

/// ASSESSED VALUE
LAND$1,609,961
IMPROVEMENTS$1,894,072
TOTAL$3,504,033
LAND BASE YEAR2016
OWNERSHIP TENUREAPPROX. 10 YEARS

PROP 13 ASSESSED VALUES — USUALLY WELL BELOW MARKET ON LONG-HELD BUILDINGS.

/// LAST TRANSFER
RECORDEDJAN 1, 2016

No market sale detected on this parcel since 2021. The last recorded transfer may have been a refinance, trust move, or family transfer that didn't reset the Prop 13 base.

/// RENT CONTROL

LIKELY UNDER AB 1482 STATE CAP (5% + CPI, MAX 10%)

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year.

AB 1482 VS RSO →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 91768

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
881 N HUNTINGTON BLVD→DEC 2024EST.$980,000$245,000UNITS4725 N GORDON ST→NOV 2024EST.$560,000$140,000UNITS4678 DEL ROSA PL→NOV 2024EST.$1,100,000$275,000UNITS4624 LEWIS ST→OCT 2024EST.$769,200$384,600UNITS21550 LAUREL AVE, BLDG 3→OCT 2024EST.$607,428$151,857UNITS41151 N WHITE AVE→SEP 2024EST.$831,800$415,900UNITS2131 NEWMAN ST→AUG 2024EST.$600,000$300,000UNITS2757 W CENTER ST→AUG 2024EST.$570,000$190,000UNITS3

PRICES ESTIMATED FROM ASSESSOR REASSESSMENT AT SALE (ASSESSED VALUE DEFLATED 2%/YR) — NOT VERIFIED CLOSING PRICES.

/// COMPARE

Buildings like this one.

ON WILLIAM ST · ZIP 91768

547 WILLIAM ST→4 UNITS · BUILT 1907 · FOURPLEX577 WILLIAM ST→2 UNITS · BUILT 1946 · DUPLEX600 WILLIAM ST→2 UNITS · BUILT 1924 · DUPLEX634 WILLIAM ST→2 UNITS · BUILT 1895 · DUPLEX645 WILLIAM ST→4 UNITS · BUILT 1985 · FOURPLEX654 WILLIAM ST→2 UNITS · BUILT 1979 · DUPLEX

SIMILAR SIZE AND ERA IN 91768

1129 N PARK AVE→12 UNITS · BUILT 1948 · 8,506 SF1147 W HOLT AVE→18 UNITS · BUILT 1962 · 6,860 SF1301 LAUREL AVE→12 UNITS · BUILT 1960 · 9,670 SF1370 N GORDON ST→14 UNITS · BUILT 1964 · 13,818 SF1378 W ORANGE GROVE AVE→23 UNITS · BUILT 1960 · 20,562 SF1420 LAUREL AVE→14 UNITS · BUILT 1956 · 9,351 SF
EVERY BUILDING IN 91768 →
/// COMMON QUESTIONS · 857 WILLIAM ST

The short answers.

Is 857 William St rent controlled?

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year. This is an inference from public assessor records, not a determination — confirm the certificate of occupancy date with the LA Housing Department or ZIMAS before you rely on it for pricing or notices.

How many units does 857 William St have?

County records list 20 units at 857 William St, classified as 5+ units across 23,176 square feet of building area, averaging about 1,159 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 857 William St built?

The assessor roll gives a build year of 1963, which puts it in the pre-1979 stock that the LA Rent Stabilization Ordinance generally covers inside city limits. Age drives more than character here: it sets rent-cap exposure, seismic retrofit obligations, and what a lender will underwrite.

When did 857 William St last change hands?

The most recent transfer on the roll was recorded January 2016. Not every recorded transfer is a market sale — refinances, trust transfers, and family conveyances all appear in the same field, and those do not reset the assessed value.

What is 857 William St assessed at, and is that what it is worth?

The current assessed value is $3,504,033 ($1,609,961 land, $1,894,072 improvements). Assessed value is not market value. Under Proposition 13 it resets only on a change of ownership and then climbs about 2% a year, so a long-held building is often assessed far below what it would trade for — and this one has held its base year for roughly 10 years.

How do I find out what 857 William St would sell for today?

Public records give you the frame — units, size, age, assessed value, when it last traded — but pricing needs in-place rents, expenses, and the condition of the units, none of which appear in county data. A broker valuation puts closed comps and a rent survey against the actual rent roll. Shaya Lowenstein does that free for LA multifamily owners, typically within 48 hours, with no obligation to list.

/// OWNER READING
WHAT IS MY BUILDING WORTH? →SELLING WITH TENANTS IN PLACE →HOW LA RSO WORKS →

Own this building?

FREE, CONFIDENTIAL VALUATION FROM CLOSED COMPS — 48H TURNAROUND.

WHAT'S IT WORTH_TALK TO SHAYA →

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