Room additions
Bedrooms, offices, and family rooms extended off the existing footprint.
Home Additions
Additions that look original to the house
More bedrooms, a bigger kitchen, a real primary suite — built onto the home you already love, matched so well the seam disappears.
ALC builds home additions across Lincoln, Rocklin, Roseville, Loomis, and Placer County — room additions, bump-outs, and second-story projects that solve the space problem without the moving trucks. Structure, roofline, siding, and windows are matched to the original so the addition reads as always-been-there.
Need a fully independent space instead? That's usually an ADU — we'll tell you honestly which one your goal calls for.
What We Build
What's included
Primary suite additions
A real suite — bedroom, bath, and closet — designed as one piece.
Bump-outs & expansions
Sometimes four more feet in the kitchen changes everything. Small additions, done precisely.
Straight Answers
What a home addition costs — honestly
Addition pricing follows the structure, not just the square footage. The real levers:
- Foundation and roof tie-in. How the new structure meets the old is where the engineering lives.
- Wet rooms. An added bathroom or kitchen brings plumbing with it; a bedroom doesn't.
- Permits and plans. Additions need drawings and city review — ALC handles the process end to end.
- Matching the original. Siding, windows, and roofing that blend seamlessly are worth doing right the first time.
FAQ
Common questions
How much does a home addition cost?
It depends on foundation work, whether the space includes plumbing, and how the roofline ties in. Estimates are free, on-site, and written — pricing is set before work starts.
Do home additions need permits?
Yes — additions require plans and city review wherever you are in Placer County. ALC prepares drawings and handles submittal, corrections, and inspections.
How do you match the existing house?
We match rooflines, siding profiles, window styles, and trim so the addition looks original — it's the difference between an addition and an obvious add-on.
Addition or ADU — which do I need?
If the space should connect to your home, it's an addition. If it needs its own entrance, kitchen, or tenant, it's an ADU. We build both and will point you honestly at the right one.
Tell us about your project
Free on-site estimate, written pricing, and the owner on every job.