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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/10509 GIDLEY ST
/// BUILDING FILE · ROLL 2025

10509 GIDLEY ST.

El Monte, CA 91731 · APN 8576-023-020

/// 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

2

BUILDING SF

1,886

SF / UNIT

943

YEAR BUILT

1942

BEDROOMS

4

BATHROOMS

2

USE · CODE 0200

DUPLEX

/// ASSESSED VALUE
LAND$384,346
IMPROVEMENTS$119,143
TOTAL$503,489
LAND BASE YEAR2011
OWNERSHIP TENUREAPPROX. 15 YEARS

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

/// LAST TRANSFER
RECORDEDAPR 16, 2013

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 91731

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
3338 WASHINGTON AVE→DEC 2024EST.$955,000$477,500UNITS23320 MEEKER AVE→DEC 2024EST.$1,000,000$250,000UNITS43354 MEEKER AVE→DEC 2024EST.$2,276,000$284,500UNITS83951 ARDEN DR→NOV 2024EST.$750,000$375,000UNITS23416 GRANADA AVE→OCT 2024EST.$933,000$311,000UNITS34128 EUNICE AVE→OCT 2024EST.$1,532,000$383,000UNITS44634 CYPRESS AVE→OCT 2024EST.$860,000$430,000UNITS24106 SHIRLEY AVE→OCT 2024EST.$650,000$325,000UNITS2

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

/// COMPARE

Buildings like this one.

ON GIDLEY ST · ZIP 91731

10437 GIDLEY ST→2 UNITS · BUILT 1940 · DUPLEX10449 GIDLEY ST→2 UNITS · BUILT 1946 · DUPLEX10517 GIDLEY ST→2 UNITS · BUILT 1942 · DUPLEX10525 GIDLEY ST→2 UNITS · BUILT 1946 · DUPLEX10534 GIDLEY ST→2 UNITS · BUILT 1942 · DUPLEX10539 GIDLEY ST→2 UNITS · BUILT 1950 · DUPLEX

SIMILAR SIZE AND ERA IN 91731

10018 ROSE AVE→2 UNITS · BUILT 1948 · 1,988 SF10208 ROXIE ST→2 UNITS · BUILT 1929 · 1,780 SF10227 OLNEY ST→2 UNITS · BUILT 1948 · 1,610 SF10247 ROSE AVE→2 UNITS · BUILT 1954 · 1,456 SF10314 RALPH ST→2 UNITS · BUILT 1951 · 1,440 SF10316 LOWER AZUSA RD→2 UNITS · BUILT 1951 · 1,861 SF
EVERY BUILDING IN 91731 →LAND WORTH MORE THAN THE BUILDING →
/// COMMON QUESTIONS · 10509 GIDLEY ST

The short answers.

Is 10509 Gidley 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 10509 Gidley St have?

County records list 2 units at 10509 Gidley St, classified as duplex across 1,886 square feet of building area, averaging about 943 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 10509 Gidley St built?

The assessor roll gives a build year of 1942, 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 10509 Gidley St last change hands?

The most recent transfer on the roll was recorded April 2013. 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 10509 Gidley St assessed at, and is that what it is worth?

The current assessed value is $503,489 ($384,346 land, $119,143 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 15 years.

Would the owner of 10509 Gidley St face a big tax bill on a sale?

Possibly. A base year going back roughly 15 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 10509 Gidley 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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