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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/SOUTH LOS ANGELES/637 W 43RD ST
/// BUILDING FILE · ROLL 2025

637 W 43RD ST.

Los Angeles, CA 90037 · APN 5019-013-012

/// 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

1,574

SF / UNIT

787

YEAR BUILT

1907

BEDROOMS

3

BATHROOMS

2

USE · CODE 0200

DUPLEX

/// ASSESSED VALUE
LAND$163,724
IMPROVEMENTS$66,214
TOTAL$229,938
LAND BASE YEAR1990
OWNERSHIP TENUREAPPROX. 36 YEARS

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

/// LAST TRANSFER
RECORDEDJAN 9, 1990

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 COVERED BY LA RSO

Built 1907 in the City of Los Angeles with 2 units — pre-October 1978 multifamily inside city limits is generally under the Rent Stabilization Ordinance, capping annual increases and restricting evictions.

HOW LA RSO WORKS →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 90037

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
1045 BROWNING BLVD→DEC 2024EST.$1,135,000$283,750UNITS4151 W 52ND ST→DEC 2024EST.$675,000$337,500UNITS2154 W 43RD ST→DEC 2024EST.$519,044$259,522UNITS21040 W 42ND ST→DEC 2024EST.$935,000$233,750UNITS4812 W 55TH ST→DEC 2024EST.$810,000$405,000UNITS24307 S NORMANDIE AVE→DEC 2024EST.$1,250,000$156,250UNITS81261 W 51ST PL→DEC 2024EST.$640,000$640,000UNITS1232 W 49TH ST→DEC 2024EST.$670,000$335,000UNITS2

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

/// COMPARE

Buildings like this one.

ON W 43RD ST · ZIP 90037

1019 W 43RD ST→2 UNITS · BUILT 2004 · DUPLEX1026 W 43RD ST→47 UNITS · BUILT 1958 · 5+ UNITS1027 W 43RD ST→3 UNITS · BUILT 1903 · TRIPLEX1034 W 43RD ST→5 UNITS · BUILT 1904 · 5+ UNITS1035 W 43RD ST→2 UNITS · BUILT 1914 · DUPLEX1037 W 43RD ST→FOURPLEX

SIMILAR SIZE AND ERA IN 90037

1013 W 54TH ST→2 UNITS · BUILT 1910 · 1,858 SF1014 W 49TH ST→2 UNITS · BUILT 1912 · 1,696 SF1014 W 56TH ST→2 UNITS · BUILT 1920 · 1,748 SF1015 W 42ND PL→2 UNITS · BUILT 1904 · 2,328 SF1016 W 45TH ST→2 UNITS · BUILT 1906 · 2,012 SF1016 W 51ST PL→2 UNITS · BUILT 1919 · 1,752 SF
EVERY BUILDING IN 90037 →RSO, 5–12 UNITS →BUILT BEFORE 1930 →LAND WORTH MORE THAN THE BUILDING →
/// SUBMARKET

This building sits in South Los Angeles.

CAP RATES, GRM, AND $/UNIT FROM CLOSED COMPS →

/// COMMON QUESTIONS · 637 W 43RD ST

The short answers.

Is 637 W 43rd St rent controlled?

Built 1907 in the City of Los Angeles with 2 units — pre-October 1978 multifamily inside city limits is generally under the Rent Stabilization Ordinance, capping annual increases and restricting evictions. 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 637 W 43rd St have?

County records list 2 units at 637 W 43rd St, classified as duplex across 1,574 square feet of building area, averaging about 787 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 637 W 43rd St built?

The assessor roll gives a build year of 1907, 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 637 W 43rd St last change hands?

The most recent transfer on the roll was recorded January 1990. 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 637 W 43rd St assessed at, and is that what it is worth?

The current assessed value is $229,938 ($163,724 land, $66,214 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 36 years.

Would the owner of 637 W 43rd St face a big tax bill on a sale?

Possibly. A base year going back roughly 36 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.

What is the South Los Angeles apartment market doing?

637 W 43rd St sits in South Los Angeles, in Los Angeles. Recorded sale counts, median price per unit, median price per square foot, and the share of rent-control-era stock for the submarket are published and updated as the county roll refreshes — see the South Los Angeles market page for the current figures rather than a number quoted here.

How do I find out what 637 W 43rd 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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