Apartment buildings in 90503, Torrance
By Shaya Lowenstein, Senior Associate at Lyon Stahl Investment Real Estate, CA DRE #01942326. From the 2025 LA County assessor roll, transfers through January 17, 2025.
ZIP code 90503 in Torrance has 349 parcels with two or more units, 6,586 units in all, on the 2025 Los Angeles County assessor roll. Half of them were built in 1963 or earlier, and 344, or 99%, in 1978 or earlier. 137 parcels, 39%, have not been reassessed on a sale since 1995 or earlier, and 25 last changed hands in 2024.
- Parcels with 2 or more units
- 349
- Units in those parcels
- 6,586
- Median year built
- 1963
- Built in 1978 or earlier
- 344
- Median Prop 13 base year
- 2002
- Base year 1995 or earlier
- 137
- Last transfer in 2024
- 25
What the buildings in 90503 Torrance look like.
Most of the apartment stock in 90503 Torrance is small. 175 of the 349 parcels hold two to four units, the duplexes, triplexes and fourplexes that are often bought by owner users and first-time investors.
The average parcel here holds 18.9 units. 34 parcels hold 50 units or more. The largest ones are listed further down this page, each with its own public record.
| Size | Parcels | Share |
|---|---|---|
| Two to four units | 175 | 50% |
| Five to nine units | 43 | 12% |
| 10 to 19 units | 39 | 11% |
| 20 to 49 units | 58 | 17% |
| 50 units or more | 34 | 10% |
How old they are.
Half the apartment parcels in 90503 Torrance were built in 1963 or earlier. 344 of 349, about 99%, went up in 1978 or before.
Across the 255 ZIP codes on this site that share is 89%, so 90503 Torrance has a larger share of older buildings than the average. Older buildings tend to carry the questions a buyer will ask about, like plumbing, electrical, the roof and whether the building needs a seismic retrofit.
Rent control in 90503 Torrance.
The City of Los Angeles rent ordinance does not cover 90503 Torrance. 344 of the parcels here were built in 1978 or earlier, and age is usually the first thing a local rent rule looks at.
Where a city has no rent rule of its own, the state cap in AB 1482 covers most buildings more than 15 years old. Check with Torrance before you underwrite a rent roll, because local rules change.
How long owners hold.
The median Prop 13 base year for apartment parcels in 90503 Torrance is 2002. A base year resets when a building sells, so an old one usually means the same owner or the same family has held it a long time.
137 parcels, 39%, still carry a base year of 1995 or earlier. The figure for all 255 ZIP codes here is 28%, so owners in 90503 Torrance have held longer than the average.
Long-held buildings often pay property tax on a value set decades ago. When they sell, the new owner is taxed on the price, which is part of why rents and expenses on these buildings need a close look before anyone sets a price.
How often buildings sell.
By last recorded transfer, 19 apartment parcels in 90503 Torrance changed hands in 2022, 23 in 2023 and 25 in 2024.
That is 7.2% of the parcels here, against 7.3% across all 255 ZIP codes, so buildings here turned over at about the same rate as the average.
A building that sold twice in those years shows up once, in its later year, and a transfer is not always a sale at market. A move into a trust or between family members is recorded too.
| Year | Parcels |
|---|---|
| 2022 | 19 |
| 2023 | 23 |
| 2024 | 25 |
The largest apartment buildings in 90503 Torrance.
- 20900 Anza Ave, Torrance 90503248 units, built 1964
- 20909 Anza Ave, Torrance 90503184 units, built 1969
- 3510 Maricopa St, Torrance 90503179 units, built 1973
- 3456 Garnet St, Torrance 90503155 units, built 1971
- 3922 Emerald St, Apt 0141, Torrance 90503154 units, built 1964
- 20707 Anza Ave, Torrance 90503152 units, built 1963
- 20530 Anza Ave, Torrance 90503128 units, built 1965
- 5520 W 190th St, Torrance 90503122 units, built 1971
- 20440 Anza Ave, Torrance 90503112 units, built 1968
- 5410 W 190th St, Torrance 90503100 units, built 1969
- 3450 Maricopa St, Torrance 9050397 units, built 1969
- 3650 Emerald St, Torrance 9050396 units, built 1962
See every apartment building in 90503 Torrance with units, square footage, year built and assessed value for each one.
Questions owners ask about 90503 Torrance.
How many apartment buildings are in 90503 Torrance?
The 2025 Los Angeles County assessor roll lists 349 parcels with two or more units in ZIP code 90503 in Torrance, with 6,586 units between them. 175 hold two to four units and 174 hold five or more.
How old are the apartment buildings in 90503 Torrance?
The median build year is 1963. 344 of the 349 parcels, about 99%, were built in 1978 or earlier.
Are apartments in 90503 Torrance under rent control?
The City of Los Angeles rent ordinance does not cover 90503 Torrance. 344 of the parcels here were built in 1978 or earlier, and age is usually the first thing a local rent rule looks at. Where a city has no rent rule of its own, the state cap in AB 1482 covers most buildings more than 15 years old. Check with Torrance before you underwrite a rent roll, because local rules change.
How often do apartment buildings sell in 90503 Torrance?
19 parcels show a last recorded transfer in 2022, 23 in 2023 and 25 in 2024. A building that sold twice counts once, in its later year.
How long do owners hold apartment buildings in 90503 Torrance?
The median Prop 13 base year is 2002, and 137 parcels, 39%, have a base year of 1995 or earlier. That usually means the same owner or family for 30 years or more.
What is my apartment building in 90503 Torrance worth?
It depends on the rents, the expenses, the condition and which rent rules apply, so a number from a website is a guess. Send me the address and I will give you a value based on recent sales nearby and what your building actually earns. There is no charge.
Type your address. You get the county record for it right here, and I will send you a value based on recent sales nearby if you want one.
Thinking about selling? Read how I sell apartment buildings in Los Angeles or ask for a free valuation.
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Where these numbers come from.
- Every count is from the 2025 Los Angeles County assessor roll and counts parcels the assessor lists with two or more units. A parcel can hold more than one building.
- The sale years are the most recent recorded transfer on each parcel, through January 17, 2025. A transfer into a trust or between family members is recorded the same way as a sale.
- The base year is the year Prop 13 last set the parcel's land value, which happens when it changes hands. Values set before 1975 show as 1975.
- Rent control and soft-story figures cover the City of Los Angeles only and come from the city's zoning map and permit data. Rent control is worked out from the build year, not taken from the Housing Department's list.
- The numbers were taken from the roll on October 27, 2026. Download every area as a CSV file.
/// HOW TO CITE THIS
Shaya Lowenstein, "Apartment buildings in 90503, Torrance," Shaya Lowenstein, October 27, 2026, https://www.shayarealestate.com/apartment-buildings/90503. Figures from the 2025 Los Angeles County assessor roll.
Shaya Lowenstein, CA DRE #01942326, Lyon Stahl Investment Real Estate. Public record figures, offered as research and not as an appraisal of any one building.