ADU Impact Fees: New Haven vs North Haven
How do adu impact fees rules compare between New Haven, CT and North Haven, CT?
New Haven, CT
New Haven County
Connecticut does not authorize municipal development impact fees in the manner of California, Washington, or Florida. There is no Connecticut analog to the California Mitigation Fee Act, and Connecticut courts require that municipal exactions on development rest on specific statutory authority. New Haven ADU costs are therefore limited to zoning review, building/electrical/plumbing/mechanical permit fees under CGS Section 29-263, the small state education surcharge under CGS Section 29-263a, and Regional Water Authority (RWA) and Greater New Haven Water Pollution Control Authority (GNHWPCA) connection charges where new utility service is required.
View full New Haven rules →North Haven, CT
New Haven County
No data available yet for North Haven.
Key Facts Comparison
| Fact | New Haven | North Haven |
|---|---|---|
| Impact Fee Authority | None statewide in Connecticut | - |
| Permit Code Authority | CGS Section 29-263 | - |
| State Education Surcharge | CGS Section 29-263a | - |
| Water Connection | Regional Water Authority (RWA) | - |
| Sewer Connection | GNHWPCA / CGS Section 7-255 | - |
| School Impact Fees | Not authorized in Connecticut | - |
Highlighted rows indicate differences between cities.
New Haven FAQ
Does New Haven charge impact fees on an ADU?
No traditional impact fees. Connecticut has no statewide impact fee enabling statute and Connecticut courts require specific statutory authority for development exactions. ADU costs are limited to zoning review, building/electrical/plumbing/mechanical permit fees under CGS Section 29-263, a small state education surcharge under CGS Section 29-263a, Regional Water Authority (RWA) water connection charges where a new service is installed, and Greater New Haven Water Pollution Control Authority (GNHWPCA) sewer connection charges under CGS Section 7-255.
Are there school or parks fees on an ADU in New Haven?
No. Connecticut does not authorize school, parks, or transportation impact fees on residential development. New Haven Public Schools is funded through the state Education Cost Sharing formula and city general-fund appropriations. New construction contributes to municipal revenue through ongoing property taxes on the increased assessed value rather than upfront impact fees, and through the small state education surcharge on building permits under CGS Section 29-263a.
North Haven FAQ
No FAQs available.
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