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

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.

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

Home Addition FAQs

Answers to common questions about home additions in Vancouver WA & Portland OR

How much does a home addition cost in Vancouver WA?

Home addition costs in Vancouver WA typically range from $200-$350+ per square foot. A basic 200 sq ft addition starts at $40,000-$60,000, while complete additions with bathrooms and kitchens range from $80,000-$200,000+. Factors include foundation type, roof complexity, utility connections, and finish quality. We provide detailed, transparent quotes with no hidden fees.

How long does a home addition take?

Most home additions take 4-8 months to complete. Simple bump-out additions may take 2-4 months, while full room additions with bathrooms typically require 6-8 months. Second story additions can take 8-12 months. Timeline depends on scope, permits, weather conditions, and material availability.

Do I need a permit for a home addition in Vancouver WA?

Yes, permits are required for all home additions in Vancouver WA. Any work that increases living space, modifies structure, or involves electrical/plumbing requires proper permits and inspections. This includes foundation work, framing, roofing, and utility connections. All Level Construction handles all permit applications and inspections for you.

Will a home addition match my existing house?

Yes, we ensure seamless integration with your existing home. Our design team carefully matches architectural style, rooflines, siding materials, windows, and interior finishes. We use advanced techniques to blend new construction with existing structures, creating additions that look like they were always part of your home.

Do home additions increase property value?

Home additions typically return 60-80% of investment in increased property value. Bathroom additions and kitchen expansions often have the highest ROI. Beyond financial value, additions provide needed living space, improve functionality, and can make your home more attractive to future buyers in the competitive Vancouver WA market.

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