Need more space without moving? We design and build room additions and second stories that blend seamlessly with your home.
When your family outgrows the house but you love your neighborhood, an addition beats moving. J&B Homes designs and builds home additions across the East Bay, primary-suite additions, bonus rooms, expanded kitchens, and full second-story additions, that look like they were always part of the house.
Additions are complex: foundations, framing, rooflines, matching siding, and tying into existing electrical, plumbing, and HVAC. As your general contractor, we manage the engineering, permitting, and every trade so the new space is seamless inside and out.
From a single room over the garage to a whole second floor, we add space that adds value and fits the way your family actually lives.
New square footage that blends with your home's structure, rooflines, and character.
Bedrooms, family rooms, offices, and sunrooms built onto your footprint.
Add a full floor with matching rooflines and proper structure.
A new bedroom, walk-in closet, and en-suite bathroom.
Bump out walls to open up the heart of the home.
Proper engineering, footings, and framing for lasting structure.
Siding, roofing, and windows that blend with the original home.
A modest single-story home expanded with a seamless addition that matches the original siding and rooflines.
Representative project visualization. Ask us for recent before-and-after photos from projects near you.
A clear path from the first call to the day the work is done right.
We visit your home, talk through your goals and budget, take measurements, and give you a clear written estimate.
We help you lock in the plan, materials, and finishes, then deliver a fixed-scope quote and project timeline.
We pull permits, protect your home, and build, with tidy job sites and a clear progress update every week.
We walk the finished project together, handle every punch-list item, and back the work with our workmanship warranty.
No high-pressure sales, no disappearing crews. Just a licensed East Bay contractor who treats your home like our own.
CSLB #1127490. Fully covered, permitted work, your home and your investment are protected.
Based in and serving the East Bay, Oakland, Berkeley, and the surrounding communities we live in too.
One point of contact and weekly updates. You are never guessing what is happening with your project.
The questions East Bay homeowners ask us most. Do not see yours? Just ask, we are happy to help.
Trusted East Bay home renovation & remodeling, whole-home, kitchens, baths, additions and more. Licensed, bonded & insured.
CSLB #1127490 · Serving the East Bay since 2023