CA Lic. #722402 · Licensed & Insured  ·  100% In-House Crews  ·  (619) 295-3123  ·  Mon–Fri 8AM–5PM
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San Diego Room Additions

Room Addition Contractor
San Diego, CA

Expand your San Diego home with a room addition built by our own in-house crew. First floor additions, second story builds, sunrooms and primary suite expansions — all done primarily by our own in-house crew.

Get a Free Estimate (619) 295-3123
What We Build

Additions That Match Your Home

Whether you need an extra bedroom, a primary suite, a home office, or a family room, Complete Builders Inc builds room additions that integrate seamlessly with your existing home. Our in-house crew matches your existing finishes, rooflines, and structural elements.

We handle most phases — structural engineering coordination, foundation, framing, roofing, insulation, drywall, electrical, plumbing, and finish work. One crew, one point of contact, with our own experienced crew.

  • First floor room additions
  • Second story additions
  • Primary bedroom & suite expansions
  • Home office & bonus room additions
  • Sunroom & great room additions
  • Foundation & structural work
  • Roofline matching & exterior finishing
Request a Free Quote →
Completed sunroom room addition exterior San Diego - Complete Builders Inc
Featured Project — Completed

Sunroom Addition — Finished Result

San Diego · Second-story sunroom addition with wrap-around windows, cable rail deck & exterior staircase — built by our in-house crew

✓ Completed Completed sunroom room addition exterior with wrap-around windows San Diego - Complete Builders Inc
Front Exterior — Completed
✓ Completed Completed room addition cable rail deck and staircase San Diego - Complete Builders Inc
Cable Rail Deck & Staircase — Completed
Project Sequence

Before & During Construction

The same project — showing the full transformation from original home to finished addition.

Home before sunroom room addition San Diego - Complete Builders Inc
Before
Original Home
Pre-construction exterior
Sunroom addition framing and window install San Diego - Complete Builders Inc
During
Framing & Window Install
Structural wrap & stucco
Room addition staircase and door install San Diego - Complete Builders Inc
During
Staircase & Door Install
Exterior stair build-out
Featured Project — Completed

Bifold Door Installation Project

San Diego · Full-width bifold door opening installed in an existing home, opening directly onto a flagstone patio — built by our in-house crew

✓ Completed Room addition with bifold doors closed flagstone patio San Diego - Complete Builders Inc
Bifold Doors — Closed
✓ Completed Room addition with bifold doors fully open to patio San Diego - Complete Builders Inc
Bifold Doors — Fully Open
✓ Completed Interior view through bifold doors to flagstone patio San Diego - Complete Builders Inc
Interior View to Patio
✓ Completed Light bright interior room addition with bifold glass doors exposed beams San Diego - Complete Builders Inc
Bright Interior — Exposed Beams
Featured Project — Completed

Custom Staircase — Iron Balusters & White Oak

San Diego · Custom staircase installation with wrought iron balusters, white oak treads & painted risers — built by our in-house crew

✓ Completed Second story room addition custom iron staircase white oak treads San Diego - Complete Builders Inc
Custom Iron Staircase — Completed
Craftsmanship
Custom Iron Balusters
Hand-selected wrought iron balusters with white oak stair treads and painted risers.
Finishes
White Oak Floors & Millwork
Wide-plank white oak flooring, tall ceilings, and a paneled double-door entry.
Scope
Custom Staircase Installation
Design, fabrication coordination, and full installation — 100% in-house crew.
Featured Project — Completed

Exterior Renovation — Beach House Repaint

San Diego · Full exterior repaint with new trim, balcony railing refresh and fence — built by our in-house crew

✓ Completed Exterior paint renovation blue beach house palm trees San Diego - Complete Builders Inc
Exterior Paint — Blue Beach House, San Diego
Exterior
Full Exterior Repaint
Complete exterior paint from foundation to roofline, including trim, fascia, and soffits.
Details
Balcony, Railing & Fence
White balcony railing and picket fence refresh — all matching exterior color scheme.
Location
San Diego Beach Community
100% in-house crew, with our own experienced crew.
Featured Project — Completed

Glass Panel Staircase — Modern Tile Treads

San Diego · Custom glass panel railing system with frameless stainless hardware and dark tile stair treads — built by our in-house crew

✓ Completed Custom glass panel staircase dark tile treads stainless hardware San Diego - Complete Builders Inc
Glass Panel Staircase — Completed
Railing System
Frameless Glass Panels
Tempered glass panels with polished stainless steel standoff hardware — clean, modern look.
Treads
Dark Porcelain Tile
Large-format dark porcelain tile stair treads with precision cuts — installed by our in-house tile crew.
Scope
Custom Staircase Installation
Full design coordination, framing, tile, and glass railing — 100% in-house crew.
How It Works

Our Simple Process

01

Free Estimate

We visit your home, assess the project, and give you a detailed written quote — no pressure.

02

Design & Planning

We coordinate all design details and work through the planning phase with you before construction begins.

03

Our Crew Builds

Our own in-house team handles the majority of trades — the same trusted team throughout your project.

04

Final Walkthrough

We walk through the finished addition with you and handle any final items before handover.

Service Areas

Room Additions Across San Diego County

Our in-house crew serves all of San Diego County — from La Jolla to Escondido, North Park to the coast.

San Diego
La Jolla
Del Mar
North Park
Mission Hills
Point Loma
Ocean Beach
Pacific Beach
Hillcrest
Kensington
Clairemont
Mira Mesa
Escondido
El Cajon
Santee
Poway
Spring Valley
FAQ

Common Questions About Room Additions

Room additions in San Diego typically range from $80,000 to $300,000+ depending on size, complexity, and finishes. Second story additions tend to cost more due to structural requirements. We provide free detailed estimates.
Most room additions take 3–6 months from start to completion depending on size and complexity.
We self-perform the majority of every project with our own licensed crew. When highly specialized trades are needed, we use the same trusted specialists we have worked with for years.
Yes. Our crew carefully matches your existing rooflines, exterior finishes, flooring, and interior details so the addition looks like it was always part of your home.
Yes. We build second story additions including structural reinforcement, staircase design, and full interior/exterior finish work matched to your home.

Ready to Add
More Space?

Our in-house crew is ready. Estimates are always free.

Call (619) 295-3123
Call Now Free Estimate