From room additions to complete second stories, we offer comprehensive home expansion solutions.
Add extra bedrooms, family rooms, home offices, or playrooms that seamlessly integrate with your existing floor plan.
Double your living space by adding a complete second floor, perfect for expanding without reducing yard space.
Transform your underutilized garage into valuable living space like a guest suite, home gym, or entertainment room.
Create comfortable, private living quarters for extended family with separate entrances and full amenities.
Smaller additions that expand a single room by a few feet, perfect for creating a breakfast nook, window seat, or larger bathroom.
We ensure your addition looks like it was always part of your home, not an afterthought.
We handle all permit applications, inspections, and code compliance requirements.
Fully licensed (#1147102), bonded, and insured for your complete protection.
Our in-house designers create plans that maximize space and functionality.
We work efficiently to minimize disruption to your daily life during construction.
A clear, structured approach to expanding your home.
Evaluate your property and existing structure
Create detailed architectural plans
Handle all permit applications
Build with expert craftsmanship
Final inspection and walkthrough
See how we've helped Bay Area homeowners expand their living space.
Everything you need to know about home additions in San Jose
Home additions in San Jose often land between $300 and $650 per square foot depending on structure type, foundation work, and interior finish level. Ground-floor room additions usually cost less than second-story expansions that require major structural reinforcement. In Bay Area projects, permit complexity and utility relocation can significantly influence total budget.
Most San Jose home additions take about 4 to 8 months from design through final inspection. Smaller bump-outs can move faster, while second-story additions typically take longer due to engineering and phased inspections. Maison Remodeling Group provides milestone-based schedules so homeowners can see progress and plan living arrangements.
Yes, San Jose requires permits for home additions because structural, electrical, mechanical, and sometimes planning reviews are involved. Setback, lot coverage, and height limits also need to be checked before construction begins. Permitted work protects safety and helps avoid complications during appraisal or resale.
In the Bay Area, common additions include new primary suites, family room expansions, and second-story bedroom wings for growing households. San Jose homeowners also request kitchen expansions that improve indoor-outdoor flow and natural light. Flexible spaces that support remote work remain a top design priority.
Select a licensed contractor with local addition experience, strong structural planning, and a transparent change-order process. Compare proposals for detail on engineering, temporary weather protection, and finish allowances so scope gaps do not become surprise costs. Maison Remodeling Group recommends speaking with recent clients about schedule accuracy and site management quality.
A thoughtfully designed addition can increase both usable living space and market value in San Jose, where square footage carries a premium. Value return depends on design fit, construction quality, and neighborhood comps, but bedroom and bathroom additions are often especially impactful. Many owners also gain long-term lifestyle value by avoiding the cost of moving in the Bay Area.
Tell us about your project and we’ll get back to you within 24 hours.
Get started with a free consultation and estimate for your home addition project.
Home additions in San Jose cost $300-$600+ per square foot in 2026. Get detailed pricing for room additions, second stories, and bump-outs from local experts.
Read More →Planning a home addition? Understand the key factors that affect home addition costs, from size and materials to permits and labor. Get expert insights for your Bay Area project.
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