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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 E BASELINE RD
/// BUILDING FILE · ROLL 2025

509 E BASELINE RD.

San Dimas, CA 91773 · APN 8661-019-030

/// 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

1,058

SF / UNIT

529

YEAR BUILT

1923

BEDROOMS

3

BATHROOMS

2

USE · CODE 0200

DUPLEX

/// ASSESSED VALUE
LAND$696,348
IMPROVEMENTS$58,026
TOTAL$754,374
LAND BASE YEAR2017
OWNERSHIP TENUREAPPROX. 9 YEARS

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

/// LAST TRANSFER
RECORDEDDEC 2, 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 91773

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
301 W 1ST ST→OCT 2024EST.$900,000$450,000UNITS2232 W 3RD ST→JUL 2024EST.$1,061,500$530,750UNITS2133 W GLADSTONE ST→JUN 2024EST.$800,000$400,000UNITS2245 W 2ND ST→MAY 2024EST.$1,080,000$540,000UNITS2914 SEDONA CT→DEC 2023EST.$900,000$450,000UNITS2249 S ACACIA ST→SEP 2023EST.$19,940,000$398,800UNITS50201 W 3RD ST→AUG 2023EST.$1,315,000$657,500UNITS2141 E 1ST ST→MAY 2023EST.$1,050,000$262,500UNITS4

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

/// COMPARE

Buildings like this one.

ON E BASELINE RD · ZIP 91773

101 E BASELINE RD→2 UNITS · BUILT 1986 · DUPLEX107 E BASELINE RD→2 UNITS · BUILT 1986 · DUPLEX109 E BASELINE RD→2 UNITS · BUILT 1986 · DUPLEX110 E BASELINE RD→52 UNITS · BUILT 1979 · 5+ UNITS113 E BASELINE RD→2 UNITS · BUILT 1986 · DUPLEX121 E BASELINE RD→2 UNITS · BUILT 1987 · DUPLEX

SIMILAR SIZE AND ERA IN 91773

115 E 2ND ST→2 UNITS · BUILT 1911 · 1,663 SF118 W 3RD ST→2 UNITS · BUILT 1912 · 2,454 SF119 W 6TH ST→2 UNITS · BUILT 1909 · 2,614 SF133 W 3RD ST→2 UNITS · BUILT 1928 · 1,272 SF133 W GLADSTONE ST→2 UNITS · BUILT 1910 · 1,714 SF145 W 1ST ST→2 UNITS · BUILT 1910 · 1,962 SF
EVERY BUILDING IN 91773 →BUILT BEFORE 1930 →LAND WORTH MORE THAN THE BUILDING →
/// COMMON QUESTIONS · 509 E BASELINE RD

The short answers.

Is 509 E Baseline Rd 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 E Baseline Rd have?

County records list 2 units at 509 E Baseline Rd, classified as duplex across 1,058 square feet of building area, averaging about 529 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 509 E Baseline Rd built?

The assessor roll gives a build year of 1923, 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 E Baseline Rd last change hands?

The most recent transfer on the roll was recorded December 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 509 E Baseline Rd assessed at, and is that what it is worth?

The current assessed value is $754,374 ($696,348 land, $58,026 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.

How do I find out what 509 E Baseline Rd 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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