NAICS 541310
Architectural Services in South Pasadena, CA
The 1 ZIP codes assigned to South Pasadena contained 15 Architecture establishments in 2023.
- Establishments (2023)
- 15
- 1 ZIP codes
- 10 or more employees
- n/a
- Practical financing floor
- Share of county
- 1%
- Los Angeles County
- City population
- 25,503
- 2025 estimate
Figures cover the ZIP codes the U.S. Postal Service assigns to South Pasadena (91030). ZIP areas are not municipal boundaries: they can extend beyond city limits and are shared between neighbouring places. This is a count of establishments in South Pasadena's ZIP codes, not a count of businesses inside its city limits.
Establishments by size
Employee-count distribution. For most buyers the businesses worth pursuing sit in the 5 to 49 range: large enough to have a manager and real systems, small enough to be owner-operated.
| Employees | Establishments | Share | Distribution |
|---|---|---|---|
| 1-4 | 11 | 73.3% | |
| 5-9 | 3 | 20.0% |
How this market compares
South Pasadena against every other city in California on the same measure. City figures cover the ZIP codes assigned to the place rather than its municipal boundary, so they are compared as a share of the businesses in those same ZIP codes rather than per resident. Cities with fewer than 500 businesses in total are left unranked.
This industry takes up a far larger slice of the local business base than it does statewide. A crowded market: expect established competitors and price pressure, but also a deeper pool of businesses to buy.
- Vs state share
- +357%
- Share of local businesses
- Rank by count
- #33
- of 160 cities
- Rank by share
- #5
- of 157 ranked
- Since 2020
- +15%
- Change in establishments
This compares how much of South Pasadena’s business base is architectural services, against the California figure. Base: 1,030 establishments across all industries in the same ZIP codes, 2023. It does not measure revenue, profitability or whether a market is worth entering.
Business size mix
South Pasadena is more fragmented than California as a whole: a larger share of very small operators. Fragmented markets are where roll-ups are assembled, and where an owner nearing retirement has no obvious internal buyer.
| Share of establishments | South Pasadena | California | Difference |
|---|---|---|---|
| Under 5 employeesOwner-operated, often no management layer | 73.3% | 60.1% | +13.2% |
| 5 to 49 employeesThe range most individual buyers target | 20.0% | 17.7% | +2.3% |
| 10 or more employeesPractical floor for acquisition financing | 0.0% | 9.2% | -9.2% |
Nearest comparable markets
The closest places to South Pasadena that also have Architecture establishments on record. Useful for spotting a gap next door, or realising the market you are looking at is already served from the town over.
| Market | Establishments | Vs state share |
|---|---|---|
| Alhambra | 7 | -8% |
| San Marino | 4 | +92% |
| San Gabriel | 8 | +19% |
| Pasadena | 57 | +133% |
| Monterey Park | 8 | +19% |
The wider Los Angeles County market
Employment and payroll are reported at county level only, so the figures below describe the county South Pasadena sits in.
- County establishments (2023)
- 1,231
- Los Angeles County
- County employees
- 9,009
- Mid-March employment
- County annual payroll
- $938M
- All establishments
What acquirers look at
Reputation and principal relationships rarely survive an owner exit. Firms with public-sector master service agreements are the exception worth pursuing.
Other industries in South Pasadena
Nearby cities
Sources
- U.S. Census Bureau, 2023 ZIP Code Business Patterns. Establishment counts and size distribution by ZIP code and NAICS, aggregated over the ZIP codes assigned to each city. Retrieved 2026-09-08.
- U.S. Census Bureau, 2023 County Business Patterns. Establishment counts, employment and annual payroll by NAICS. Retrieved 2026-09-08.
- U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages (2026Q1). Quarterly establishment counts and employment for employers covered by unemployment insurance. Retrieved 2026-09-08.