ADU Impact Fees: Bostonia vs Carlsbad
How do adu impact fees rules compare between Bostonia, CA and Carlsbad, CA?
Bostonia, CA
San Diego County
No data available yet for Bostonia.
Carlsbad, CA
San Diego County
Under California Government Code 65852.2(f)(3) and CMC 21.10.030, Carlsbad ADUs under 750 square feet are exempt from all city impact fees. ADUs 750 square feet or larger pay impact fees proportional to the primary dwelling's square footage. Standard ADU permit and plan-check fees still apply.
View full Carlsbad rules →Key Facts Comparison
| Fact | Bostonia | Carlsbad |
|---|---|---|
| Authority | - | Gov. Code 65852.2(f)(3) |
| Sub-750 sq ft ADU | - | Exempt from all city impact fees |
| 750+ sq ft ADU | - | Proportional impact fees |
| Permit/Plan Check | - | ~$2,000-$4,000 (any size) |
| School Fees | - | Carlsbad USD ~$4.79/sq ft (state law) |
Highlighted rows indicate differences between cities.
Bostonia FAQ
No FAQs available.
Carlsbad FAQ
Are Carlsbad ADUs charged impact fees?
ADUs under 750 sq ft are exempt from all city impact fees under California Government Code 65852.2(f)(3). ADUs 750 sq ft and larger pay impact fees proportional to the ratio between the ADU floor area and the primary dwelling, per state law.
What does a Carlsbad ADU permit cost?
Per the Carlsbad Master Fee Schedule, permit and plan-check fees typically run $2,000-$4,000. Impact fees are waived for ADUs under 750 sq ft. Larger ADUs add proportional impact fees and Carlsbad USD school fees of about $4.79/sq ft.
Does Carlsbad charge sewer connection fees for an ADU?
Not for ADUs under 750 sq ft - Government Code 65852.2(f)(3) waives all city capacity and connection charges. ADUs 750 sq ft or larger pay proportional sewer capacity fees based on size relative to the primary dwelling.
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