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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/509 W RALPH ST
/// BUILDING FILE · ROLL 2025

509 W RALPH ST.

San Gabriel, CA 91776 · APN 5360-025-019

/// 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

1,244

SF / UNIT

622

YEAR BUILT

1914

BEDROOMS

3

BATHROOMS

2

USE · CODE 0200

DUPLEX

/// ASSESSED VALUE
LAND$411,980
IMPROVEMENTS$102,989
TOTAL$514,969
LAND BASE YEAR2012
OWNERSHIP TENUREAPPROX. 14 YEARS

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

/// LAST TRANSFER
RECORDEDOCT 19, 2011

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 91776

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
712 PEARL ST→DEC 2024EST.$1,530,000$765,000UNITS25635 N CHARLOTTE AVE→NOV 2024EST.$930,000$310,000UNITS3110 E MISSION RD→NOV 2024EST.$600,000$300,000UNITS2114 E MISSION RD→NOV 2024EST.$600,000$300,000UNITS21957 LAFAYETTE ST→NOV 2024EST.$1,100,000$550,000UNITS2242 S WALNUT GROVE AVE→NOV 2024EST.$2,492,000$623,000UNITS4902 S GLADYS AVE→OCT 2024EST.$974,000$487,000UNITS2908 S GLADYS AVE→OCT 2024EST.$1,548,000$387,000UNITS4

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

/// COMPARE

Buildings like this one.

ON W RALPH ST · ZIP 91776

250 W RALPH ST→2 UNITS · BUILT 1943 · DUPLEX256 W RALPH ST→2 UNITS · BUILT 1943 · DUPLEX257 W RALPH ST→2 UNITS · BUILT 1948 · DUPLEX260 W RALPH ST→2 UNITS · BUILT 1955 · DUPLEX261 W RALPH ST→2 UNITS · BUILT 1960 · DUPLEX264 W RALPH ST→2 UNITS · BUILT 1955 · DUPLEX

SIMILAR SIZE AND ERA IN 91776

1006 S GLADYS AVE→2 UNITS · BUILT 1924 · 1,552 SF1017 PALM AVE→2 UNITS · BUILT 1927 · 2,793 SF107 W MARSHALL ST→2 UNITS · BUILT 1924 · 1,378 SF109 W SAXON AVE→2 UNITS · BUILT 1919 · 1,851 SF110 E MISSION RD→2 UNITS · BUILT 1926 · 1,128 SF1103 E BROADWAY→2 UNITS · BUILT 1927 · 1,475 SF
EVERY BUILDING IN 91776 →BUILT BEFORE 1930 →LAND WORTH MORE THAN THE BUILDING →
/// COMMON QUESTIONS · 509 W RALPH ST

The short answers.

Is 509 W Ralph 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 509 W Ralph St have?

County records list 2 units at 509 W Ralph St, classified as duplex across 1,244 square feet of building area, averaging about 622 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 509 W Ralph St built?

The assessor roll gives a build year of 1914, 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 509 W Ralph St last change hands?

The most recent transfer on the roll was recorded October 2011. 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 509 W Ralph St assessed at, and is that what it is worth?

The current assessed value is $514,969 ($411,980 land, $102,989 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 14 years.

How do I find out what 509 W Ralph 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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