Looking to add square footage without leaving the neighborhood you love? HomeSense Construction & Remodeling designs and builds home additions across the San Fernando Valley and greater Los Angeles County — from first-floor room additions and master-suite expansions to full second-story additions. As a licensed California general contractor (CA License #1125001), we handle everything from architectural plans and city permits through framing, finishes, and final inspection. Call (818) 300-3422 for a free in-home consultation.
Why Add On to Your San Fernando Valley Home?
With Los Angeles home prices and interest rates where they are in 2026, expanding the home you already own is often smarter than buying a bigger one. A well-built addition lets families in Northridge, Encino, Sherman Oaks, Woodland Hills, and Van Nuys gain a new bedroom, home office, in-law suite, or expanded kitchen and living area — while building lasting equity in one of the most competitive real-estate markets in the country. Because we lead with the San Fernando Valley and serve all of LA County and the surrounding region, we know the local lot sizes, hillside conditions, and city departments inside and out.
Types of Home Additions We Build
- Room additions & bump-outs — add a bedroom, family room, sunroom, or expand an existing room out into the yard.
- Second-story additions — build up instead of out when your lot is tight, doubling your living space without losing yard.
- Master-suite additions — a new primary bedroom with walk-in closet and en-suite bath.
- In-law suites & home offices — flexible space for multigenerational living or remote work.
- Kitchen and living-area expansions — open up and enlarge the heart of the home.
- Garage conversions & ADUs — if you are weighing an attached addition against a separate unit, see our ADU construction services and our guide on room addition vs. ADU.
Our Home Addition Process
Every project follows a clear, transparent process so you always know what comes next:
- Free consultation & design. We meet at your home, discuss goals and budget, and develop architectural and structural plans.
- Permits & approvals. We pull all required permits with the City of Los Angeles or your local SFV jurisdiction and coordinate structural, electrical, and plumbing reviews.
- Construction. Foundation and framing, roof tie-in, rough mechanicals, insulation, drywall, and finishes — managed by one dedicated team.
- Inspections & final walkthrough. We pass every city inspection and hand you a finished, permitted, move-in-ready space.
What’s Included
Our home-addition projects are turnkey. That means design and engineering, permit handling, demolition, foundation and framing, roofing tie-in, windows and doors, electrical and plumbing, HVAC extension, insulation, drywall, flooring, paint, and trim — all coordinated under one licensed and insured contractor. You get a single point of contact and a single accountable team from start to finish.
Home Addition Cost & Timeline in Los Angeles (2026)
In the 2026 LA market, ground-floor room additions typically run $200 to $600 per square foot, depending on finishes and complexity. Second-story additions generally run $400 to $700 per square foot, because they require structural reinforcement of the existing first floor and foundation plus a roof-off construction phase. A partial pop-up (one room) often lands around $150,000–$300,000, while a full second story of 800–1,500 sq ft can range $250,000–$500,000+. Los Angeles construction costs run roughly 15–25% above the national average due to labor rates, permit fees, and strict seismic and Title 24 energy requirements. Most additions take 3 to 6 months from permit to completion. For detailed numbers, see our Room Addition Cost guide and our full remodeling cost guides. Every project gets a written, fixed-scope estimate — no surprises.
Why Choose HomeSense Construction
HomeSense is a fully licensed (CA Lic #1125001), bonded, and insured general contractor based in West Hills, serving the entire San Fernando Valley and Los Angeles County. We are known for transparent pricing, clean job sites, on-time delivery, and craftsmanship that adds real value to your home. Our team manages design, permits, and construction in-house, so your addition blends seamlessly with your existing home. See the communities we serve and read more on our FAQ page.
Frequently Asked Questions
How much does a home addition cost in Los Angeles?
Ground-floor additions typically run $200–$600 per square foot in 2026, and second-story additions $400–$700 per square foot. LA costs run about 15–25% above the national average. We provide a free written estimate for your specific project.
Do I need a permit for a home addition in LA?
Yes. Any addition that adds square footage or alters the structure requires permits and inspections. As your licensed general contractor, HomeSense handles the entire permit process with your city.
How long does a home addition take?
Most additions take 3 to 6 months from permit issuance to final inspection, depending on size, second-story structural work, and city review times.
Is a room addition or an ADU better for my property?
It depends on your goals — an attached addition expands your main home, while an ADU creates a separate unit you can rent. See our Room Addition vs. ADU guide, or call us to talk it through.
Which areas do you serve?
We lead with the San Fernando Valley and serve all of Los Angeles County and the surrounding region. See our full service areas.
Get a Free Home Addition Estimate
Ready to expand your space? Call HomeSense Construction & Remodeling at (818) 300-3422 or request a free in-home consultation. Licensed, bonded, and insured — CA Lic #1125001. Proudly serving the San Fernando Valley and greater Los Angeles.