A sunroom is one of the best ways to add bright, usable living space to a Costa Mesa home — a
place to relax, work, or entertain that connects the indoors to the yard. From the established homes of
Mesa Verde and Eastside Costa Mesa to newer properties, Katz Design & Builders is a licensed
design-build firm (California CSLB #1089060) that designs and builds sunrooms and indoor-outdoor living
additions across Costa Mesa.
Why Costa Mesa homeowners choose Katz Design & Builders
- We build real additions, not kits. A proper sunroom is engineered, insulated,
and finished to blend with your home — not a bolt-on enclosure. - Indoor-outdoor done right. Glass, sliding or folding doors, light, and
ventilation designed so the space works year-round. - Licensed, insured, accountable. CSLB #1089060, fully insured, fixed price, one
project manager. - We handle Costa Mesa permits. Additions and structural work are permitted through
the city. We prepare, submit, and manage inspections.
Our Costa Mesa sunroom & addition services
Sunrooms & solariums
Bright, comfortable rooms designed and built to blend with your home’s architecture.
Indoor-outdoor living
Sliding and folding glass walls that open the home to the yard, with the structural work done right.
Room additions
Family rooms, offices, and living space engineered, permitted, and matched to the existing home.
Patio covers & enclosures
Covered, comfortable outdoor space that extends your living area.
What to expect: our process
- Consultation & site visit — we assess your home and yard and talk
budget honestly. - Design & fixed proposal — drawings, selections, itemized price and
schedule before construction. - Permits & approvals — handled through the City of Costa Mesa.
- Build — one project manager, a clean site, updates to completion.
Costa Mesa sunroom — FAQ
Is a sunroom a permitted addition?
Yes — a proper, year-round sunroom is a permitted structural addition, engineered and built to
code. We handle the plans and permits.
Can a sunroom be used year-round?
When it’s built as a real addition with proper insulation, glazing, and ventilation, yes. That’s how
we build them — not as a temporary enclosure.
How long does a sunroom take to build?
Most run a couple of months depending on size and permits. You’ll get a realistic schedule up front.
Get a quote for your Costa Mesa sunroom
Tell us about your project and we’ll set up a consultation. Licensed CSLB #1089060, serving Costa
Mesa and Orange County.
Call (213) 444-7636 or request a consultation online.