Construction Company

Construction Company Services
in Orange County, CA

Room additions, second-story additions, and structural work — new square footage and structural changes built to engineered specs, not just a new coat of paint.

Get a Free Estimate (949) 229-1162
Framing and structural construction on a home addition in Orange County
Licensed & Insured — CA #1140564
Transparent Pricing
Always Communicating
Orange County
What's Included

Structural Work, Engineered and Built Right

Adding square footage or changing your home's structure isn't the same as a cosmetic remodel — it demands engineering, permitting, and construction discipline.

Room Additions

New bedrooms, offices, or living space that tie seamlessly into your home's existing roofline, foundation, and systems — not an obvious add-on.

Second-Story Additions

Adding a full second story to a single-story home — starting with a structural assessment to confirm your foundation can carry the added weight.

Framing & Structural Work

New framing for additions, structural reinforcement, and repairs to existing framing damaged by age, water, or termites — built to current code.

Foundation Repair

Cracked, settled, or shifting foundations diagnosed and corrected with proper engineering — the kind of work that has to be right the first time.

Garage Conversions

Converting a garage into livable space — new insulation, flooring, electrical, and plumbing where needed — for a home office, gym, or bonus room.

Load-Bearing Wall Removal

Opening up a floor plan by removing a load-bearing wall — engineered beam sizing, proper support, and permitting handled correctly.

Why ProHome

Structural work done right, not just fast

Additions and structural changes are unforgiving — a beam sized wrong or a foundation issue ignored becomes a much bigger, much more expensive problem later. We start with real engineering, not guesswork.

Structural Engineering First

Additions and structural changes start with a proper engineering assessment — not a rough guess about what your foundation or framing can handle.

Permitted & Inspected

Structural changes always require permits and inspections — we manage the entire process so the work is legal and documented when you sell.

No Surprise Costs

Your quote breaks out engineering, permits, labor, and materials — not a lump sum you have to take on faith.

50+
home and property projects completed across Orange County
5★
Google rating from homeowners who'd refer us to their neighbors
0
surprise invoices — every cost is discussed before work begins
Our Process

Simple. Clear. No Guessing.

Every construction project follows the same straightforward process so you know exactly where things stand at every stage.

1
Plan

Structural Assessment & Design

We assess what your foundation and framing can support, bring in a structural engineer where needed, and build a detailed scope with transparent pricing.

2
Prepare

Engineering & Permitting

Structural plans get engineered and submitted for permit review. We manage every round of city feedback so approvals move as fast as possible.

3
Build

Build & Inspect

Framing, structural work, and every required inspection completed in sequence, with regular updates and a final walkthrough before we call it done.

Project Inspiration

The Kind of Additions We Take On

Second-story addition framing rising above an existing roofline Poured concrete foundation and footings with rebar for a home addition Structural support beam being installed in a framed home addition
Common Questions

Construction Company FAQ

Straight answers to the questions we hear most often from Orange County homeowners.

What's the difference between a construction company and a remodeling contractor?
Remodeling generally updates or reconfigures existing space — new finishes, layout tweaks, updated systems. Construction work adds new square footage or changes a home's structure — room additions, second-story additions, foundation work, and load-bearing changes. ProHome handles both, and a lot of larger projects involve some of each.
Can you add a second story to my existing home?
In many cases, yes — though it depends on your existing foundation's capacity to support the added weight and your city's height and setback restrictions. We start with a structural assessment and engineering review to confirm feasibility before any design work begins.
How long does a room addition take?
Design and permitting typically take 2 to 5 months depending on your city's process and whether structural engineering is required. Construction on a single-story addition generally runs 3 to 6 months once permits are issued; a second-story addition or more complex structural project takes longer. We'll give you a realistic timeline before work starts.
Can you remove a load-bearing wall to open up my floor plan?
Yes, with proper structural engineering. A load-bearing wall requires a beam or other support system to carry the weight it was holding, sized correctly by an engineer and installed to code. This always requires a permit — we handle the engineering, permitting, and construction as one process.
How much does a room addition cost in Orange County?
A single-story room addition in Orange County typically runs $250 to $450 per square foot depending on finish level and site conditions. A second-story addition generally costs more due to structural reinforcement, often $350 to $550 per square foot. We give you an itemized quote after a structural assessment of your property.
Where We Work

Construction Services Across Orange County

Based in Lake Forest, we serve homeowners throughout the OC. Select your city to learn more.

Ready to add on or build up?

Free estimate. Detailed scope. No pressure — just a clear plan for your project.

Free On-Site Estimate
Detailed Written Scope
CA Licensed & Insured
No Obligation
Book Your Free Estimate (949) 229-1162