Room additions & ADUs in Imperial Beach, CA
Room additions, second stories, ADUs, garage conversions, and whole-home remodels. We handle design, structural engineering, permits, and the full build.
Best home additions in Imperial Beach, CA
We build room additions, ADUs, and whole-home remodels across Imperial Beach and San Diego County. From a single-room bump-out to a detached ADU or a full second story, we handle the design, structural engineering, permitting, and construction with our in-house crew. Most additions run 3 to 6 months from permit to final inspection.
What's included in home additions in Imperial Beach
Room additions & bump-outs in Imperial Beach
Adding square footage for a bedroom, family room, or larger kitchen. We handle the foundation, framing, roof tie-in, and finishes.
ADUs & granny flats in Imperial Beach
Detached and attached accessory dwelling units under California's ADU laws, from studio casitas to two-bedroom units, permitted and built to code.
Garage conversions in Imperial Beach
Turning an attached garage into a bedroom, office, gym, or ADU with proper insulation, egress, and HVAC.
Second-story additions in Imperial Beach
Building up when you cannot build out. Structural engineering, a new staircase, and a roof line that matches the existing home.
Basement & attic conversions in Imperial Beach
Finishing usable square footage you already have, with insulation, egress, and code-compliant ceiling heights.
Whole-home remodels in Imperial Beach
Taking a dated home down to the studs and rebuilding kitchens, baths, flooring, and layout in one coordinated project.
See related serviceHow to start your Imperial Beach home additions
- 1
Free in-home estimate
We come to your home, walk the space, and listen to what you want out of the home addition. No high-pressure sales, no surprise fees later.
- 2
Honest, written quote
You get a clear line-item quote in plain English. Materials, labor, timeline. If something changes mid-project, you sign off before any extra cost.
- 3
Design and material selection
We help you pick finishes that fit your budget and the existing home. We have trade pricing with local suppliers, which we pass through.
- 4
Build with our in-house crew
The Carrasco family runs the job site every day. No revolving subcontractors. Clean work, daily progress, and someone you can talk to face-to-face.
- 5
Final walkthrough and warranty
We do a punch-list walk with you before final payment. If anything isn't right, we fix it. Our workmanship is backed for a full year after completion.
How much does a room addition or ADU cost in Imperial Beach?
A room addition in Imperial Beach runs $40,000 to $100,000 depending on size and whether it includes a bathroom. Garage conversions run $60,000 to $120,000. Detached ADUs run $150,000 to $300,000 depending on size and finishes. Whole-home gut remodels run $100,000 to $250,000. Every project gets a written, line-item quote after the design phase.
Why Imperial Beach homeowners choose 5 IN 1 for home additions
Home Additions in 5 Imperial Beach neighborhoods
Imperial Beach is the southernmost coastal city in California and the only one in the South Bay actually on the ocean. The salt air is harsh on materials. Coastal homes here need marine-grade hardware, corrosion-resistant fixtures, and proper exterior sealing. We have remodeled beach cottages, 1950s tract homes, and newer townhomes here and we plan finishes specifically for the coastal exposure.
We have remodeled Imperial Beach homes since 1987. The Carrasco family runs every job site, the same in-house crew handles your project from rough-in to final walk, and we pull every permit in your name.
Imperial Beach neighborhoods we serve
- • Seacoast
- • Palm Avenue
- • Tijuana River Valley
- • Bayside
- • South Imperial Beach
ZIP codes: 91932
Recent home additions projects in Imperial Beach
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Home Additions in Imperial Beach: frequently asked questions
How much does a room addition or ADU cost in Imperial Beach?+
In Imperial Beach, room additions run $40,000 to $100,000, garage conversions $60,000 to $120,000, and detached ADUs $150,000 to $300,000. Whole-home gut remodels run $100,000 to $250,000. You get a written line-item quote after the design phase.
How long does a room addition or ADU take?+
Plan for 3 to 6 months from permit to final inspection for most additions and ADUs. Design and permitting adds 2 to 4 months before construction starts, and City of San Diego review runs longer than the smaller cities.
Do I need a permit for an addition or ADU in Imperial Beach?+
Yes. Every addition and ADU in Imperial Beach needs a permit and plan check. We handle the drawings, structural engineering, and the submittal in your name, and we meet inspectors at each stage.
Can I build an ADU on my Imperial Beach lot?+
Most single-family and multi-family lots in Imperial Beach qualify for at least one ADU under current California law, and many also allow a junior ADU. We check your lot, setbacks, and utilities up front and tell you what will actually fit.
What additions add the most value in Imperial Beach?+
In Imperial Beach, ADUs top the list because of the rental income and the region's housing demand. Primary-suite additions and garage conversions to living space also return well. We can talk through the numbers for your specific block.
Other remodeling services in Imperial Beach
Kitchen Remodeling in Imperial Beach
Full kitchen remodels with cabinets, countertops, flooring, and layout changes. We handle the whole job in-house, from rough-in to final walkthrough.
Bathroom Remodeling in Imperial Beach
Walk-in showers, tubs, vanities, and tile. We handle plumbing, electrical, framing, and finish work in-house.
Flooring in Imperial Beach
Luxury vinyl plank, tile, hardwood, and laminate. Single rooms or whole-home installs.
Home Additions near you in San Diego County
Ready to start your Imperial Beach home additions project?
Free in-home estimate. Honest pricing. Written quote within 48 hours.