Looking for home additions in San Jose? ODL Construction is a licensed Bay Area general contractor serving San Jose and the surrounding Silicon Valley — from Willow Glen, Almaden Valley, Cambrian Park and beyond. Room additions, primary suites, and second stories that look original to the home.
In a market where moving up costs hundreds of thousands in transaction costs and a bigger mortgage, adding on is often the smarter play — especially in top-school neighborhoods where the right addition returns more than a relocation. The key is an addition that looks like it was always there, not bolted on.
For San Jose specifically, it comes down to local realities: San Jose's sheer neighborhood range — from period bungalows to hillside ranches — means the right remodel in Willow Glen is the wrong one in Almaden; we scope to the district, not a template. San Jose runs a high-volume permit center and a pro-ADU program with pre-approved plan options — generally one of the faster Santa Clara County jurisdictions when the package is complete. We design and permit your home additions around exactly those conditions.
Home Additions in San Jose — what we handle
- Room and bedroom additions
- Primary-suite additions
- Second-story additions
- Bump-outs and rear extensions
- Structural engineering and foundation work
- Roofline and exterior matching
- Zoning, setback, and design-review compliance
- Permits and inspections
Home Additions cost
Typical Bay Area ranges, not a quote. Additions price by square footage, structural complexity, and foundation work. Second stories cost more because the floor below must be reinforced. You get a fixed proposal after design.
Timeline
Room additions typically run 3–5 months; second stories 5–9 months, including design, engineering, and permitting.
San Jose permits
San Jose runs a high-volume permit center and a pro-ADU program with pre-approved plan options — generally one of the faster Santa Clara County jurisdictions when the package is complete.
