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For many families, there comes a time when their home no longer fits their needs. While the thought of moving may seem like the only option, expanding your home with a custom addition is often more affordable, less stressful, and allows you to stay in the neighborhood you love.

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CentrePoint Construction Inc. simplifies the entire home addition process with start-to-finish service—from design, city permits, and engineering, to full construction. Whether you're envisioning a kitchen expansion, a master suite, or a new home office, we deliver expert craftsmanship and excellent service every step of the way.

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Our Step-by-Step Home Addition Process

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1. Planning & Design

Our process starts with a collaborative meeting to discuss your goals, layout ideas, and budget. We perform a site evaluation and feasibility study to understand your property’s limitations and opportunities. Our team then prepares:

• Floor plans and elevations

• Engineering specifications

• Low Impact Development (LID) documentation

• Title 24 energy compliance reports

Once plans are finalized and approved by the local Building and Safety Department, we pull the necessary permits and prepare to break ground.

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2. Site Prep & Foundation

We begin by obtaining 811 DigAlert clearance to ensure safe excavation. After marking utilities, we:

• Clear and level the site

• Excavate the foundation area

• Install rebar, dowels, and forms

• Complete all underground plumbing and electrical work

Once inspected and approved by the engineer, city inspector, and deputy inspector, we pour the foundation.

 

3. Framing the Structure

Framing begins with the sill plate, securely bolted to the foundation. We then build the rim joists, floor joists, and walls using high-grade lumber. Depending on the design, we install:

• Structural beams (LVL, PSL, Glulam, or steel)

• Trusses or rafters for the roof

• Plywood sheathing and shear walls

All structural hardware (Simpson Strong-Tie, CMST12 straps, etc.) is installed and inspected for code compliance.

 

4. HVAC, Electrical & Plumbing (MEP)

As framing progresses, our licensed trades install all major systems:

• HVAC ducting and equipment

• Electrical wiring, outlets, panels

• Plumbing supply, waste, and vent lines

Each system is inspected at the rough stage to ensure full compliance with code.

 

5. Rough Inspection

City inspectors confirm all framing and MEP systems meet current codes. This crucial milestone allows us to move forward with insulation, drywall, roofing, and finishes.

 

6. Roofing

Once rough inspections are passed, we begin roof installation:

• Roof sheathing

• Waterproof underlayment

• Flashing and weatherproofing

• Final roofing material (shingles, tile, metal, or TPO)

• Ventilation and trims

 

7. Window Installation

We install energy-efficient, Title 24–compliant windows. All openings are sealed with flashing tape and waterproof membranes to ensure long-term durability.

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8. Exterior Finishes

We apply your chosen exterior wall material:

• Stucco (e.g., La Habra)

• Fiber cement siding (e.g., Hardie Board)

• Wood siding (e.g., LP)

Each option offers unique benefits in aesthetics, maintenance, and energy efficiency.

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9. Drywall & Interior Finishes

With insulation complete, we move into interior work:

• Drywall installation and texturing

• Painting

• Flooring

• Trim, baseboards, doors, and hardware

This step transforms the shell into a livable space.

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10. Final Inspection & Certificate of Occupancy

After construction is complete, we schedule final inspections. Once approved, you’ll receive a Certificate of Occupancy (CofO), making your new space officially ready to use.

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Whether you're expanding your living space, adding a second story, or converting your garage into an ADU, Centrepoint

Construction Inc. brings unmatched experience and craftsmanship to every home addition project.​​​​​​