Home Additions in Portland Metro
The Process
Home Addition Contractors in Portland
Seamless Expansion, Invisible Transition
As dedicated home addition contractors serving the Portland Metro, every addition we craft is designed to feel as though it has always been part of the original home — matching rooflines, materials, and architectural language with obsessive precision. Portland home additions from Masters often pair with a full home remodel, new architectural design, or a fresh outdoor living envelope — see real Portland Metro pricing in our remodeling cost guide.
Matched to Perfection
Structural & aesthetic continuity guaranteed.
Our Advantage
Visual Certainty
Experience your addition in full detail before a single nail is driven.
Architectural Drafting
Precision blueprints that ensure your addition integrates seamlessly with the existing structure.
3D Visualization
Photorealistic renders so you experience every detail before construction begins.
Material Matching
Expert sourcing to guarantee a flawless blend of old and new materials.
Inside the Work
Types of Home Additions We Build
The home additions we build across Portland range from second-story additions and primary-suite wings to kitchen and great-room bump-outs, mudroom expansions, sunrooms, garage conversions, and detached ADUs. Each Masters addition is engineered before it is built — we start with a measured survey of the existing structure, then model the new footprint in 3D so you can walk the rooms, test ceiling heights, and confirm sightlines from the existing house. Our structural team specs foundations, beams, and shear walls; our designers resolve the new envelope down to the trim reveal so the addition reads as original to the home.
Permitting in the Portland and Vancouver metro is rarely simple — setbacks, FAR limits, design review in historic overlays, and stormwater calculations all touch the package. We prepare and submit the full set, respond to plan-review comments, and coordinate with structural and energy consultants so the only thing you do is review the renderings and sign the spec sheet.
On site, work is sequenced to keep the existing home weather-tight and livable. Foundations are dug and poured, framing is tied into the existing structure, the roofline is woven, and the new envelope is dried in before any interior demo touches the original house. From there we run mechanical, electrical, and plumbing, install custom cabinetry and millwork, and finish to match the rest of the home. Many clients pair an addition with a coordinated interior renovation so the entire house moves forward at once.
Frequently Asked
Home Addition FAQs
What Portland and Vancouver homeowners ask before expanding their footprint.
Most home additions in the Portland Metro fall between $400 and $700 per square foot, with second-story additions and primary-suite wings on the higher end because of structural reinforcement of the existing home. See current numbers in our Portland & Vancouver remodeling cost guide.
Start the Conversation
Ready to build your
masterpiece?
We prioritize precision over volume, ensuring every project in West Linn, Lake Oswego, and the Portland Metro area receives our team's full, undivided mastery. Reach out to discuss how we can bring your vision to life.
Masters Team
Concierge
"We personally review every inquiry to ensure our vision aligns with your legacy."
Every addition starts inside our in-house architectural studio with photorealistic renderings, so structural framing and matched exteriors are resolved before permitting. Budgeting an addition? See real Pacific Northwest numbers in our Portland & Vancouver remodeling cost guide. Many additions pair with a full interior renovation, expanded covered decks and outdoor rooms, and new privacy fencing by Masters Fences. Browse the addition project portfolio, confirm we build in Lake Oswego, Bethany or Camas, WA, or contact our addition team. See every neighborhood we build in on our Portland Metro service areas map.
Areas We Serve