What happens if you skip the permit (and you needed one)
- Stop-work orders freeze your project immediately; the city can levy $250–$500 per day until you pull a permit and pay double fees ($6,000–$30,000 depending on scope).
- Title clearance on resale: buyers and lenders discover unpermitted work via title company ADU disclosure; refinance or sale falls apart, cost to legalize retroactively $8,000–$25,000.
- Insurance denial: homeowners policies exclude unpermitted work; fire, theft, or liability claim on the ADU gets denied, leaving you personally liable (unlimited exposure).
- Code enforcement complaint from neighbor or city: fines $500–$1,500 per violation per day, forced removal of non-compliant work (complete tear-out $15,000–$50,000+).
Marina ADU permits — the key details
California Government Code 65852.2 (amended by AB 881, effective Jan 1, 2020) strips away Marina's old zoning prohibition on ADUs. The state law says the city cannot deny you a permit for a qualifying ADU — meaning a residential unit of no more than 1,200 sq ft (or 65% of primary dwelling, whichever is smaller) — on zoning grounds alone. A junior ADU (interior conversion sharing utilities, ≤500 sq ft, ≤75% of primary dwelling floor area) has even lighter restrictions. However, Marina's Building Department still enforces setback, lot-size, parking, utility, and design standards. The city's local code does not explicitly waive parking for ADUs under 750 sq ft (as some CA cities do), so you may face parking-variance requirements on tight lots. The city is also subject to the 60-day AB 671 shot clock for ministerial ADU applications (those that clearly comply with state law and local standards); however, Marina interprets most ADU projects as requiring discretionary planning review, which extends the timeline to 8–12 weeks. This gray area — ministerial vs. discretionary — is common in coastal CA cities and often causes delays. Detached ADUs must comply with IRC R401-R408 (foundation, frost depth does not apply in Marina's coastal zone but drainage and expansive-soil protocols do), IRC R310 (two independent egress routes if bedroom count ≥2), and NEC 210 (separate electrical service and sub-metering). Garage conversions are faster because the structure exists, but the city requires proof the primary residence has adequate parking (2 spaces minimum); if on-street or easement parking is your only option, the ADU may be denied or require a variance.
Contact city hall, Marina, CA
Phone: Search 'Marina CA building permit phone' to confirm
Typical: Mon-Fri 8 AM - 5 PM (verify locally)