Residential
ADU Design & Permitting in Fontana
ADU Design & Permitting for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.

Inland Empire · San Bernardino County
Some Fontana addresses are actually unincorporated County. That single fact changes the department, the fees and the timeline. Plan review here runs through City of Fontana Building and Safety, with Fontana Fire Protection District on access and life safety. Typical experience is roughly 6 to 12 weeks to permit on residential work.
Wide mix of 1950s starter homes and newer master-planned tracts. On the commercial side, warehouse and distribution tenant improvements at scale. Those two facts explain most of what is easy and most of what is expensive here.
Impact fees vary noticeably between the older core and the newer specific plan areas. We put the local fee picture into the first budget, because a number that ignores school, sewer and utility charges is not a budget, it is an advertisement.
We work throughout Fontana ZIP codes 92335, 92336 and 92337, including North Fontana, Sierra Lakes, Southridge, Downtown. Two addresses in the same ZIP can still sit under different overlays, so we review the parcel rather than the postcode.
North Fontana · Sierra Lakes · Southridge · Downtown
Residential
ADU Design & Permitting for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Residential
Garage Conversions for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Residential
Additions & Remodels for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Commercial
Tenant Improvements for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Commercial
Restaurant, Retail & Hospitality for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Residential
Permitting & Plan Check for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Commercial
Construction Management for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
Commercial
Design-Build for Fontana owners, reviewed by City of Fontana Building and Safety, typically 6 to 12 weeks to permit on residential work.
City of Fontana Building and Safety. Fire review runs through Fontana Fire Protection District. Some Fontana addresses are actually unincorporated County. That single fact changes the department, the fees and the timeline.
Typically roughly 6 to 12 weeks to permit on residential work. The variable is correction cycles, not intake speed, which is why we spend the extra week making the first submittal complete.
Most commonly: North Fontana specific plan standards; Industrial and logistics overlays along I-10 and Valley Blvd; Sphere-of-influence parcels reviewed by the County. Which ones touch your parcel is an address question, and we answer it during feasibility.
Impact fees vary noticeably between the older core and the newer specific plan areas. We put those numbers into the first budget rather than presenting them as a later surprise.
Yes, across Los Angeles and Orange County from offices in Santa Monica and Fullerton. Nearby markets we cover include Rancho Cucamonga, San Bernardino, Ontario, Redlands.
Send the address, including the ZIP code, and what you want to build. We come back with what the City of Fontana Building and Safety route looks like, a realistic budget range and a schedule.