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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/307 MARIPOSA AVE
/// BUILDING FILE · ROLL 2025

307 MARIPOSA AVE.

Sierra Madre, CA 91024 · APN 5768-020-038

/// 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

5

BUILDING SF

4,728

SF / UNIT

946

YEAR BUILT

1914

BEDROOMS

10

BATHROOMS

5

USE · CODE 0500

5+ UNITS

/// ASSESSED VALUE
LAND$179,003
IMPROVEMENTS$227,437
TOTAL$406,440
LAND BASE YEAR1985
OWNERSHIP TENUREAPPROX. 41 YEARS

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

/// LAST TRANSFER
RECORDEDFEB 11, 2022

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 91024

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
120 AUBURN AVE→NOV 2024EST.$1,250,000$625,000UNITS2590 W SIERRA MADRE BLVD→NOV 2024EST.$4,600,000$418,182UNITS11525 BROOKSIDE LN→OCT 2024EST.$409,500$204,750UNITS2609 W SIERRA MADRE BLVD→OCT 2024EST.$6,000,000$333,333UNITS1870 AUBURN AVE→OCT 2024EST.$2,125,000$708,333UNITS3247 E LAUREL AVE→SEP 2024EST.$1,100,000$550,000UNITS2230 E HIGHLAND AVE→SEP 2024EST.$960,000$480,000UNITS2127 E HIGHLAND AVE→JUL 2024EST.$3,454,000$1,151,333UNITS3

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

/// COMPARE

Buildings like this one.

ON MARIPOSA AVE · ZIP 91024

130 MARIPOSA AVE→2 UNITS · BUILT 1936 · DUPLEX240 MARIPOSA AVE→2 UNITS · BUILT 1924 · DUPLEX252 MARIPOSA AVE→6 UNITS · BUILT 1962 · 5+ UNITS258 MARIPOSA AVE→3 UNITS · BUILT 1921 · TRIPLEX261 MARIPOSA AVE→2 UNITS · BUILT 1921 · DUPLEX262 MARIPOSA AVE→2 UNITS · BUILT 1946 · DUPLEX

SIMILAR SIZE AND ERA IN 91024

149 W MONTECITO AVE→5 UNITS · BUILT 1928 · 5,026 SF247 N MOUNTAIN TRL→5 UNITS · BUILT 1926 · 3,008 SF278 OLD RANCH RD→5 UNITS · BUILT 1922 · 3,045 SF282 MARIPOSA AVE→5 UNITS · BUILT 1925 · 4,490 SF30 S LIMA ST→5 UNITS · BUILT 1909 · 4,626 SF372 SYCAMORE PL→5 UNITS · BUILT 1914 · 4,064 SF
EVERY BUILDING IN 91024 →BUILT BEFORE 1930 →
/// COMMON QUESTIONS · 307 MARIPOSA AVE

The short answers.

Is 307 Mariposa Ave 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 307 Mariposa Ave have?

County records list 5 units at 307 Mariposa Ave, classified as 5+ units across 4,728 square feet of building area, averaging about 946 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 307 Mariposa Ave 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 307 Mariposa Ave last change hands?

The most recent transfer on the roll was recorded February 2022. 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 307 Mariposa Ave assessed at, and is that what it is worth?

The current assessed value is $406,440 ($179,003 land, $227,437 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 41 years.

Would the owner of 307 Mariposa Ave face a big tax bill on a sale?

Possibly. A base year going back roughly 41 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 307 Mariposa Ave 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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