Portland metro, Vancouver and Clark County · OR CCB #230588
Home additions in Portland and Vancouver, built onto the house you already have
Extra bedrooms, primary suites, bump-outs and expanded living space, designed and built by one local team. We handle design, permitting and construction so you are not coordinating three different companies.
What’s included
Room additions and bump-outs
Add a bedroom, office or family room that reads as part of the original house, not a bolted-on box.
Primary suites
A quieter bedroom, closet and bath on the back or the second story, planned around how you actually live.
Kitchen and living expansions
Open a wall, push out a few feet, or grow the room you already gather in.
Sunrooms
Year-round space that borrows light from the yard, detailed to match the rest of the home.
Structure, roof and exterior match
We tie new framing, roof lines and siding into what is already there.
Permits in Portland metro and Clark County
Permit drawings, city or county review, and inspections are part of the job.


What an addition actually solves in this metro
Plenty of Portland and inner-eastside houses, and a lot of Vancouver ranchers, are a room or two short of how the household lives now. Moving means a new mortgage, a new school and giving up a street you already like. An addition keeps the lot and grows the house.
Older Portland homes often need a careful match to existing framing, roofs and setbacks. Across the river, Clark County review is its own path. We plan for the city or county you are actually in, then build to that plan.
Most additions take 8 to 16 weeks after permits are approved, based on what Harris publishes for this work. You can usually stay in the house while we build. Cost depends on size and finish; we give a transparent quote with no hidden fees.
Also in Clark County
A finished interior from Harris’s F Street project in Washougal, just east of Vancouver.

Our 5-step process
The same path we use on every design-build project: we scope the work, design it, pull the permits, build it, and walk it with you at the end.
- 1Initial survey
- 2Design phase
- 3Planning & permits
- 4Construction
- 5Final walkthrough
Built on our word
You are hiring a licensed Oregon contractor, not a revolving cast of subs you never meet. We design, permit and build under one roof, and we keep you posted when something changes.
- Licensed in Oregon as OR CCB #230588.
- Permits and inspections are part of the job, including Portland-metro cities and Clark County work we take on.
- You get a clear scope and a straight conversation about budget before construction starts.
- Financing options are available; we’ll explain what is current when we talk.
We have not listed a Washington contractor license number here because we do not have a confirmed number on file. If Harris has one for Clark County work, it should go in this section before publish.
Get your free addition consultation
Tell us what you have in mind. We will call or text the Portland office to schedule. Or call 503-610-0739 now.
Videos
A short intro and client interviews belong here. Slots below use real posters where we have them, and a visible placeholder where we do not.
Intro video neededVIDEO NEEDED: a short walkthrough of an addition in Portland or Vancouver.
Client testimonial video neededVIDEO NEEDED: a homeowner talking about their addition.
What our clients say
These are Google reviews published on harrisandsons.co and already used on the current Portland kitchen and bathroom landers. The review text does not name a city.
We hired Harris & Sons to remodel part of our house and also build an addition. The project involved 3 bedrooms, 2 walk-in closets, and 2 bathrooms. Throughout the construction process, which had a few unforeseen complications, Harris & Sons worked to meet our expectations, gave us constructive options, and pushed to keep as close to the schedule as possible. They worked with us on controlling overall cost and understood and respected our financial capabilities and limits. In the end they gave us a beautiful and good quality home.
Google review, as published on harrisandsons.co
From our first meeting, Christian Harris stood out. Not only is he incredibly knowledgeable about construction and design, but he also brought a level of calm confidence that made us feel like our home was in the best possible hands. He took the time to understand our vision, walked us through every step of the process, and communicated consistently, something that’s rare in the construction world these days.
Google review, as published on harrisandsons.co
We have worked with Christian and his team for numerous projects around our home for the past year. They built and stained a beautiful fence for us, and also built a paver patio and pathway in our backyard. They are consistently friendly, communicative, and deliver high-quality work. Their employees are considerate and helpful. They have excellent follow-through from start to finish, and are exceptionally priced. We would highly recommend this team and we will continue to utilize their skills around our home going forward.
Google review, as published on harrisandsons.co
Where we work
The Portland office takes this work across the metro and across the river in Vancouver and Clark County. The number on this page is the Portland line.
Portland metro
- Portland, OR
- Beaverton, OR
- Hillsboro, OR
- Tigard, OR
- Lake Oswego, OR
- Gresham, OR
- Happy Valley, OR
- Oregon City, OR
Vancouver and Clark County
- Vancouver, WA
- Washougal, WA
- Camas, WA
- Clark County, WA
Questions
How much does a home addition cost in this area?
It depends on the type and size of the addition. Harris & Sons provides transparent quotes with no hidden fees. We walk the house with you before we price the work.
Do I need permits for a home addition?
Yes. Our team handles permits and inspections. That includes Portland, the surrounding metro cities, and Clark County work we take on.
How long does the process take?
Timelines vary by project. Most additions take 8 to 16 weeks after permits are approved, according to Harris’s published home-addition FAQ.
Can I live in my house during construction?
In most cases, yes. We work to keep disruption down so you can stay home.
Do you work in Vancouver and Clark County?
Yes. This page is for the Portland office, and we take addition work on both sides of the river, including Vancouver, Washougal and Camas.
Ready to plan your addition?
Tell us what you have in mind. A short note now saves a long back-and-forth later. Or call the Portland office at 503-610-0739.
Call 503-610-0739