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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/634 WILLIAM ST
/// BUILDING FILE · ROLL 2025

634 WILLIAM ST.

Pomona, CA 91768 · APN 8340-025-014

/// 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

2

BUILDING SF

1,784

SF / UNIT

892

YEAR BUILT

1895

BEDROOMS

5

BATHROOMS

2

USE · CODE 0200

DUPLEX

/// ASSESSED VALUE
LAND$101,961
IMPROVEMENTS$84,967
TOTAL$186,928
LAND BASE YEAR1994
OWNERSHIP TENUREAPPROX. 32 YEARS

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

/// LAST TRANSFER
RECORDEDAUG 14, 2018

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 · DUPLEX645 WILLIAM ST→4 UNITS · BUILT 1985 · FOURPLEX654 WILLIAM ST→2 UNITS · BUILT 1979 · DUPLEX659 WILLIAM ST→3 UNITS · BUILT 1909 · TRIPLEX

SIMILAR SIZE AND ERA IN 91768

1034 N PARK AVE→2 UNITS · BUILT 1908 · 1,751 SF1140 N GORDON ST→2 UNITS · BUILT 1905 · 1,750 SF1156 N GORDON ST→2 UNITS · BUILT 1907 · 2,382 SF125 W ORANGE GROVE AVE→2 UNITS · BUILT 1890 · 2,437 SF1419 N GORDON ST→2 UNITS · BUILT 1893 · 2,353 SF1448 N GORDON ST→2 UNITS · BUILT 1897 · 1,004 SF
EVERY BUILDING IN 91768 →BUILT BEFORE 1930 →
/// COMMON QUESTIONS · 634 WILLIAM ST

The short answers.

Is 634 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 634 William St have?

County records list 2 units at 634 William St, classified as duplex across 1,784 square feet of building area, averaging about 892 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 634 William St built?

The assessor roll gives a build year of 1895, 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 634 William St last change hands?

The most recent transfer on the roll was recorded August 2018. 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 634 William St assessed at, and is that what it is worth?

The current assessed value is $186,928 ($101,961 land, $84,967 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 32 years.

Would the owner of 634 William St face a big tax bill on a sale?

Possibly. A base year going back roughly 32 years usually means a low tax basis, and a low basis means a large taxable gain on a straight sale — capital gains plus depreciation recapture, with California taxing gains at ordinary income rates. It is also why long-held buildings so often sell through a 1031 exchange instead, or pass through an estate for the step-up in basis.

How do I find out what 634 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.

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