Home Remodeling, ADUs & Additions in Fremont
Get a Free Fremont Project Consultation
Our Services in Fremont
Backyard ADUs, garage conversions and junior ADUsBathroom Remodeling in Fremont
Primary suites, hall baths and accessible bathroomsKitchen Remodeling in Fremont
Open layouts, islands, structural and system upgradesHome Additions in Fremont
Single-story additions and second storiesNew Home Construction in Fremont
Custom homes and teardown rebuildsOur Fremont Project
Home remodel and addition with an open kitchen
Fremont General Contractor for ADUs, Additions and Remodels
Axiom Renovation (CA Lic. #1105006) builds ADUs, home additions, second stories, remodels and outdoor projects in Fremont. Our Fremont work includes a full home remodel and addition with a vaulted great room, and a second-story addition now under construction.
Fremont requires a separate application for an ADU, so ADU work and main-house work are permitted on their own tracks. We plan both together so the schedule still works.
What We Build in Fremont
- ADUs: detached, attached and junior ADUs, plus garage conversions
- Home additions and second story additions
- New custom homes, including tear-down and rebuild
- Kitchen and bathroom remodels and whole-home renovations
- Outdoor living: pools and spas, outdoor kitchens, pavers and hardscape, and artificial turf, lawns and landscaping
See finished work in our portfolio.
Fremont ADU Rules at a Glance
- A single-family lot can have an ADU plus a JADU, with more units where state law allows.
- New attached ADUs can be up to 1,000 sq ft and 30 ft tall (or the zone limit); new detached ADUs up to 1,200 sq ft and 16 ft (18 ft near transit, plus 2 ft for roof pitch).
- Side and rear setbacks are 4 ft. Detached ADUs generally need 10 ft from the main home.
- No parking is required for an ADU, and converted garages need no replacement parking.
- Rentals must be at least 30 days. JADUs can be up to 500 sq ft inside the home, including an attached garage.
- ADUs are exempt from development impact fees. Fremont offers pre-approved detached ADU plans from about 496 to 1,000 sq ft with a 7-business-day review.
Source: City of Fremont ADU handout (January 2026).
Rules change often, so we confirm the current standards for your parcel during the site assessment.
Other Fremont Rules That Affect Your Project
- Second stories: in R-1 districts, homes are limited to 17 ft for one story and 30 ft for two, and a second story is limited to 50% of the first floor, with caps by district (for example 1,000 sq ft in R-1-6).
- Design review applies in residential districts, and Glenmoor Gardens, Mission Ranch and Mission Palms have their own neighborhood standards.
- Hill Area projects may need a geotechnical report.
- Trees: trees 18 in. or more in diameter, and native trees 10 in. or more, generally need a permit, though trees behind the front of the house on R-1 lots of 10,000 sq ft or less are exempt.
Getting Permits in Fremont
Fremont uses Accela Citizen Access for permits, and design review and the building permit can be reviewed at the same time.
We Also Work Near Fremont
We also build in nearby Newark, Union City, Milpitas, and across the Bay Area. See all of our service areas.
Frequently Asked Questions
Can I build a second story in Fremont?
Yes, within limits. In R-1 districts, a second story is limited to 50% of the first floor area, with a cap by district, and homes are limited to 30 ft for two stories.
Does Fremont charge impact fees for ADUs?
No. ADUs are exempt from development impact fees in Fremont, though school and utility fees may apply.
Can I combine ADU and remodel permits in Fremont?
No. Fremont requires the ADU to be a standalone application, separate from work on the main house.
Does Fremont have pre-approved ADU plans?
Yes. Fremont offers pre-approved detached ADU plans with a flat review fee and a 7-business-day review.