(503) 816-8080 Vancouver, WA & Portland, OR
Mon-Fri: 8AM-8PM Licensed & Insured

Home Additions in Vancouver, WA & Portland, OR

Expand your living space seamlessly with expertly designed and constructed home additions. From room additions to second stories, we create spaces that feel like they've always been part of your home.

Licensed & Bonded
5-Star Rated
20+ Years Experience
100% Satisfaction

Types of Home Additions We Build

Whether you need more bedrooms, a larger kitchen, or additional living space, we specialize in creating additions that seamlessly integrate with your existing home.

Room Additions

  • Master bedroom suites
  • Family room expansions
  • Home office spaces
  • Guest bedroom additions
  • Sunroom & conservatories

Second Stories

  • Full second story additions
  • Partial second story expansion
  • Dormer additions
  • Structural reinforcement
  • Staircase design & installation

Bump-Out Additions

  • Kitchen bump-outs
  • Bathroom expansions
  • Dining room extensions
  • Bay window additions
  • Breakfast nook creation

Garage Conversions

  • ADU (Accessory Dwelling Unit)
  • In-law suite creation
  • Home gym conversion
  • Workshop & studio spaces
  • Rental income properties

Kitchen Expansions

  • Open concept creation
  • Island & peninsula addition
  • Pantry & storage expansion
  • Breakfast bar installation
  • Butler's pantry creation

Outdoor Living

  • Covered deck & patio additions
  • Screened porch construction
  • Three-season room creation
  • Outdoor kitchen spaces
  • Pergola & gazebo installation

Our Home Addition Process

Home additions require careful planning, precise execution, and attention to detail. Our proven process ensures your addition integrates seamlessly with your existing home.

1

Site Analysis & Planning

Comprehensive site evaluation, structural assessment, and feasibility analysis for your addition project.

2

Design & Engineering

Architectural design, structural engineering, and 3D renderings to visualize your new space.

3

Permits & Approvals

Complete permit application process including structural, electrical, and plumbing approvals.

4

Foundation & Framing

Precise foundation work, structural framing, and connection to existing home structure.

5

Systems Integration

Electrical, plumbing, and HVAC system extensions to serve your new addition.

6

Insulation & Drywall

Energy-efficient insulation and professional drywall installation for comfort and efficiency.

7

Finishes & Details

Flooring, paint, trim work, and all finish details to match your existing home's aesthetic.

8

Final Inspection

Complete walkthrough, quality inspection, and final approvals to ensure perfection.

Why Choose Home Additions Over Moving?

Home additions offer incredible value, allowing you to stay in your beloved neighborhood while creating the space your family needs to grow and thrive.

Cost Effective

Often 30-50% less expensive than purchasing a larger home, with no realtor fees or moving costs.

Stay in Your Neighborhood

Keep your established community connections, schools, and proximity to work and family.

Increase Home Value

Quality additions typically return 70-85% of their cost in increased home value.

Custom Design

Create exactly the space you want, designed specifically for your family's lifestyle and needs.

No Moving Hassle

Avoid the stress, time, and expense of searching for, buying, and moving to a new home.

Energy Efficiency

Modern additions include the latest energy-efficient materials and systems to reduce utility costs.

Recent Home Addition Projects

Explore our portfolio of stunning home additions that have transformed lives and homes throughout Vancouver, WA and Portland, OR.

Two Story Home Additions Vancouver WA - Room Addition Contractor Services

Two-Story Addition

Vancouver, WA - $180,000

Master Suite Home Addition Portland OR - Family Room Addition Services

Master Suite Addition

Portland, OR - $125,000

Kitchen Expansion Vancouver WA - Home Addition Contractor Services

Kitchen Expansion

Camas, WA - $95,000

Home Addition Investment Guide

Home addition costs vary based on size, complexity, and finishes. Our transparent pricing helps you plan your investment and maximize your return.

Single Room Addition

$150-$250

Per square foot

  • Basic electrical & plumbing
  • Standard materials & finishes
  • Insulation & drywall
  • Flooring installation
  • Paint & trim work
Most Popular

Premium Addition

$250-$350

Per square foot

  • Full electrical & plumbing
  • Premium materials & finishes
  • Hardwood or tile flooring
  • Custom millwork & trim
  • Designer fixtures & hardware
  • Enhanced insulation package

Luxury Custom Addition

$350+

Per square foot

  • Complete electrical & plumbing
  • Luxury materials throughout
  • Hardwood or natural stone floors
  • Custom cabinetry & built-ins
  • High-end fixtures & appliances
  • Smart home integration
  • Complex architectural details

Factors Affecting Addition Costs

Cost Increases:

  • • Second story additions
  • • Complex rooflines
  • • Structural modifications
  • • Premium materials
  • • Multiple rooms

Cost Savings:

  • • Simple rectangular additions
  • • Slab foundations
  • • Standard finishes
  • • Proximity to existing utilities
  • • Easy site access

Why Choose All Level Construction for Your Home Addition?

Home additions are complex projects requiring expertise in design, engineering, and construction. Our proven track record ensures your addition exceeds expectations.

Expert Design

Our architects and designers create additions that seamlessly integrate with your existing home.

Structural Expertise

Licensed structural engineers ensure your addition is safe, code-compliant, and built to last.

Permit Management

We handle all permits, inspections, and code compliance so you don't have to worry about the details.

On-Schedule Delivery

Detailed project management keeps your addition on track and minimizes disruption to your life.

Ready to Expand Your Home?

Start planning your home addition with a free consultation and estimate. Let's create the additional space your family needs to thrive.

Free consultation includes feasibility analysis • 3D design concepts • Detailed cost estimates