ADU Builder in South Pasadena, CA: Permits, SPMC 36.350.200 and Costs

How long does South Pasadena have to decide a complete ADU application?

South Pasadena Municipal Code Section 36.350.200.C, as adopted by Ordinance 2356 on May 5, 2021 and effective December 15, 2021, requires the Planning Department to consider an ADU or JADU application ministerially within 60 days after the application is deemed complete, and states that the application is deemed approved if the City has not acted on it within 60 days. California Government Code Section 66317(a)(3) gives the permitting agency 60 days from receipt of a complete application to approve or deny it, and Section 66317(a)(2)(A) requires a written completeness determination within 15 business days. The 60 day clock stops when the applicant requests a delay in writing, and South Pasadena confirms the 60 day deemed-approved rule on the Planning Division page on southpasadenaca.gov. South Pasadena's Fiscal Year 2026-2027 Master Fee Schedule, Resolution No. 8000, adopted May 6, 2026 and effective July 6, 2026, sets the ADU Review - Ministerial filing fee at $633 under Fee Item 113. L Square prepares the submittal package and tracks the 60 day clock for the homeowner.

What size, height, and setback rules apply to a South Pasadena ADU?

Ordinance 2356 sets the local standards in SPMC 36.350.200.E. A new construction detached ADU may have a minimum floor area of 150 square feet and a maximum floor area of 1,200 square feet, may run up to two stories, and is limited to 18 feet of height for a flat roof and 22 feet for a pitched roof, consistent with California Government Code Section 66314(d)(5). A new construction attached ADU is limited to 850 square feet for a unit with up to one bedroom or 1,000 square feet for a unit with two or more bedrooms and 16 feet of height, the statewide floors set by Section 66321(b)(2)(A) and (B) that a local ordinance cannot undercut. SPMC 36.350.200.E.2 allows the ADU floor area that exceeds the property's lot coverage and FAR limits to be approved by right, mirroring the 800 square foot ministerial envelope that Section 66321(b)(3) requires the City to allow. Minimum side yard setbacks for new construction are stated in Section 36.350.200.E.4, and no setback is required for a conversion of an existing structure. A junior accessory dwelling unit may not exceed 500 square feet per Section 66313(d).

What is the High Risk Fire Area rule for South Pasadena ADUs?

Section 36.350.200.A of SPMC defines the High Risk Fire Area as the section of South Pasadena located south of Monterey Road, extending to the city border, and west of Meridian Avenue, extending to the city border, as established in SPMC Chapter 14. Inside that overlay, Section 36.350.200.I requires fire sprinklers in any new ADU or JADU, requires one off-street parking space when the property is adjacent to a narrow street under 28 feet wide, and limits a detached ADU to within 150 feet of the front property line so a 250 foot pre-connected fire hose line reaches the unit. For flag lots, the City allows the ADU to be located within 100 feet of a dry standpipe installed on the property with the Fire Chief's approval. Confirm the exact overlay boundary for a specific lot with the South Pasadena Community Development Department before drawing plans.

What does the Pre-Approved ADU Plan program cover and when will it launch?

The City of South Pasadena launched a Pre-Approved ADU Program in 2026, as described in the March 18, 2026 press release on southpasadenaca.gov and the July 14, 2026 Planning Commission agenda packet. The program will offer three pre-approved plan types called the Cottage, the Loft, and the Townhouse, in three architectural styles: Spanish, Craftsman, and Modern, sized to fit South Pasadena neighborhood character. The Planning Commission considered the program's first progress update on May 19, 2026 and continued the discussion on July 14, 2026, with a follow-up hearing scheduled for August 11, 2026. The final pre-reviewed ADU plan library and supporting materials are anticipated to be completed in November 2026, and an ADU Guide will accompany the program. Until the library is published, every South Pasadena ADU still goes through the standard ADU Review - Ministerial process under SPMC 36.350.200 and the 60 day state clock.

How does the HCD 2026 letter shape South Pasadena's ADU rules going forward?

The HCD Letter of Technical Assistance dated February 27, 2026, posted on hcd.ca.gov, confirms that the most recent ADU ordinance on file for South Pasadena with HCD is from 2021, and lists the state law amendments the City must address to align SPMC 36.350.200 with current law. The letter specifically cites California Government Code Section 66332, which prohibits a local agency from denying a permit for an unpermitted ADU or JADU that was constructed before January 1, 2020, for building code violations, unless the local agency finds that correcting the violation is necessary to comply with conditions that would otherwise deem a building substandard. The letter also cites Sections 66315, 66317(c), 66333(b) and (g), 66334(a), 66314(d)(11), and 66323(a)(4)(A)(ii) as the state amendments the City must reconcile. L Square tracks the HCD letter items during plan check so the homeowner's application meets current state law regardless of where the SPMC text still reflects 2021 numbering.

How much does an ADU cost in South Pasadena?

L Square's configured model prices, published on the L Square cost guide page on lscontractor.com, start at $180,000 for the 600 square foot Model 600, run to $240,000 for the 800 square foot Model 800A and Model 800B, to $295,000 for the 1,000 square foot Model 1000A and Model 1000B, and to $354,000 for the 1,200 square foot Model 1200. The same model prices apply to Los Angeles County cities including South Pasadena and are the design-build price, not a final project total. The South Pasadena ADU Review - Ministerial filing fee is $633 per the Fiscal Year 2026-2027 Master Fee Schedule, with optional Director Design Review at $735.50 and PC Chair Design Review at $965.50 when the project triggers those steps. South Pasadena has not adopted a special ADU impact fee, so the statewide Section 66311.5(c)(1) rule controls: no impact fee on an ADU with 750 square feet of interior livable space or less, and proportional impact fees above that floor. L Square holds California Contractors State License Board number 1095476 and prepares the submittal package, the SPMC 36.350.200 plan set, and the covenant for the City.

Official South Pasadena ADU sources

• South Pasadena Ordinance 2356, adopted May 5, 2021 and effective December 15, 2021, amended SPMC 36.350.200 to require ADU and JADU applications to be considered ministerially within 60 days after deemed complete and to be deemed approved if the City has not acted within 60 days, and defines the High Risk Fire Area as the section of the city south of Monterey Road, extending to the city border, and west of Meridian Avenue, extending to the city border. Official source
• South Pasadena's Fiscal Year 2026-2027 Master Fee Schedule, Resolution No. 8000, adopted May 6, 2026 and effective July 6, 2026, sets the ADU Review - Ministerial filing fee at $633.00 under Fee Item 113, with Director Design Review - Residential at $735.50 and PC Chair Design Review - Residential at $965.50. Official source
• The City of South Pasadena Planning Commission agenda packet for July 14, 2026, posted on southpasadenaca.gov, states that the City's Pre-Approved ADU Program will offer three plan types called the Cottage, the Loft, and the Townhouse, in three architectural styles: Spanish, Craftsman, and Modern, and that the final pre-reviewed ADU plan library and supporting materials are anticipated to be completed in November 2026. Official source
• The March 18, 2026 press release on southpasadenaca.gov announces a community input meeting for the Pre-Approved ADU Plan Program on March 26, 2026 at the Library Community Room, 1115 El Centro Street, identifies Office of: Office as the program consultant, and describes an ADU Guide that will accompany the program. Official source
• The HCD Letter of Technical Assistance dated February 27, 2026, posted on hcd.ca.gov, confirms that the most recent ADU ordinance on file for South Pasadena with HCD is from 2021, and lists the state law changes since 2021 that the City must address, including California Government Code Sections 66315, 66317(c), 66332 subds. (a)-(c), 66333(b) and (g), 66334(a), 66314(d)(11), and 66323(a)(4)(A)(ii). Official source
• California Government Code Section 66317(a)(3) requires a permitting agency to approve or deny a complete ADU or JADU application within 60 days from receipt, and states that if the local agency has not approved or denied the completed application within 60 days, the application shall be deemed approved. Section 66317(a)(2)(A) requires a written completeness determination within 15 business days. Official source
• California Government Code Section 66321(b)(2)(A) and (B) set statewide minimum floors of 850 square feet for a studio or one bedroom detached ADU and 1,000 square feet for a multi bedroom detached ADU that a local ordinance cannot undercut. Section 66321(b)(3) requires the city to allow a minimum 800 square foot detached ADU with 4 foot side and rear yard setbacks, and the section provides that 800 square feet of the floor area of the ADU is allowed to exceed the property's lot coverage and floor area ratio limits. Official source