Standards & rules
Impact fees on SB 1211 ADUs
AB 1033 + SB 13 already capped fees on smaller ADUs. SB 1211 inherits those protections.
SB 13 (2019) capped impact fees on ADUs ≤750 sf at zero, and required fees for larger ADUs to be proportional. SB 1211 ADUs inherit these protections — a 600-sf detached unit pays no impact fee in most jurisdictions.
School fees, sewer-capacity fees, and water-meter installation fees are separate from the impact-fee cap and still apply.
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Related standards & rules topics
SB 1211 parking requirementsHow SB 1211 changes parking rules: cities can no longer require 1:1 replacement for parking removed to build ADUs.SB 1211 setback requirementsFour-foot side and rear setbacks. 18-foot height limit. The objective standards explained.SB 1211 height limits18 feet maximum for detached ADUs. How that affects two-story designs.Fire code compliance for SB 1211 ADUsThe one local power that survives ministerial review.Utility hookups for multifamily ADUsWater, sewer, gas, electric requirements under SB 1211.Interior conversion ADUs under SB 1211The 25%-of-units rule and how it stacks with detached ADUs.Converting surface parking under SB 1211The biggest unlock. How to assess your parking lot for ADU potential.ADU design under SB 1211What objective standards mean for layout, placement, and unit mix.
How this topic plays in different cities
SB 1211 in San MateoSan Mateo County · $3,000/moSB 1211 in Santa RosaSonoma County · $2,300/moSB 1211 in Chula VistaSan Diego County · $2,300/moSB 1211 in AlhambraLos Angeles County · $2,300/moSB 1211 in Moreno ValleyRiverside County · $1,900/moSB 1211 in OrangeOrange County · $2,500/moSB 1211 in Santa CruzSanta Cruz County · $2,900/moSB 1211 in PalmdaleLos Angeles County · $1,700/moSB 1211 in FresnoFresno County · $1,500/moSB 1211 in OaklandAlameda County · $2,700/moSB 1211 in FullertonOrange County · $2,500/moSB 1211 in CoronaRiverside County · $2,000/mo
By property type
Duplex2-unit · up to 3 new ADUsTriplex3-unit · up to 4 new ADUsFourplex / 4-unit4-unit · up to 5 new ADUs5-unit apartment5-unit · up to 6 new ADUs6-unit apartment6-unit · up to 7 new ADUs8-unit apartment8-unit · up to 10 new ADUs10-unit apartment10-unit · up to 10 new ADUs12-unit apartment12-unit · up to 11 new ADUs16-unit apartment16-unit · up to 12 new ADUs20-unit apartment20-unit · up to 13 new ADUs24-unit apartment24-unit · up to 14 new ADUs32-unit apartment32-unit · up to 16 new ADUs