Skip to main content Skip to content Cedar Hills ranch homes sit on generous, level lots built for exactly this. Woodland Construction Group designs and builds room additions, second-story pop-tops, and primary-suite additions across Cedar Hills – Washington County permits and zoning handled end-to-end.
Planning a home addition in Cedar Hills, Oregon? The neighborhood was developed from 1946 as one of the most ambitious master-planned communities in the Pacific Northwest – and the ranch homes on those generous, level lots were designed for exactly the kind of ground-floor expansion families need today.
An addition gives you the square footage you have outgrown without the cost and disruption of selling, moving, and losing your Beaverton School District address, your neighbors, and your proximity to Cedar Hills Crossing and Commonwealth Lake Park.
Because Cedar Hills is unincorporated Washington County, every addition routes through Washington County Land Use and Transportation and Building Services – not Portland, not Beaverton. WCG handles every step of that county process, from zoning and setback review through final inspection with Tualatin Valley Fire and Rescue, so the permit path never catches you off guard.
Home additions in Cedar Hills in 2026 run roughly $250 to $500 per square foot, with total investments typically between $80,000 and $350,000+ depending on addition type, size, and finish level. A 400-square-foot primary-suite addition usually lands between $120,000 and $200,000.
Adding well-built square footage to a Cedar Hills ranch home in a neighborhood with strong school access and an easy commute via Sunset Transit Center consistently delivers strong resale value – and lets you stay in the home and community you chose in the first place. See the full breakdown on our home addition cost page.
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Cedar Hills homes were built in waves from 1946 through the early 1970s – well-located, well-proportioned ranch homes on lots that were generous by design. What they were not built with was the primary suite, the home office, or the great room that families need in 2026. An addition closes that gap without giving up a neighborhood that is genuinely hard to replace.
Proximity to Cedar Hills Crossing (New Seasons, McMenamins, Powell’s), Commonwealth Lake Park, and Sunset Transit Center means Cedar Hills homes command a real location premium. Adding 400 to 800 square feet of well-built space to a home in that location multiplies the return. The Beaverton School District assignment alone keeps demand – and values – consistently strong.
For most families, the calculation is straightforward: a comparable larger home in the same area costs far more than staying and building. The addition captures that gap as equity while keeping everything that made the neighborhood the right choice. Compare the options on our home additions service page.
Woodland Construction Group – 18 Years Experience – Washington County Permits Handled
Our team of licensed contractors specializes in room additions, second-story pop-tops, and primary-suite additions across Cedar Hills and the Washington County corridor. We know the county permit process, the local setback rules, and how to tie a new addition cleanly into an existing 1950s-70s ranch structure so it looks and feels like it was always there.
Cedar Hills ranch homes gained roughly 400 to 800 square feet of addition potential when the original 1946-era master plan set lot coverage limits that remain favorable today – meaning most lots can absorb a ground-floor addition without exceeding Washington County maximums. We verify your specific lot during the consultation at no cost.
Six addition types cover almost every Cedar Hills homeowner’s need in 2026. Each is designed around how the existing ranch structure works and how Washington County setbacks apply to your lot.
Ground-floor square footage added seamlessly to an existing roofline or exterior wall – family rooms, home offices, mudrooms, and flex spaces designed to feel like original construction.
Full second-floor additions that double living area without consuming lot coverage. Structurally engineered to carry the load of the new floor on your Cedar Hills ranch foundation.
Dedicated owner’s retreats with walk-in closets, spa baths, and private access – built as a single-story wing that preserves the flow of the existing home.
Targeted expansions of kitchens, dining rooms, or bathrooms – often 100 to 300 square feet – that solve a specific space problem without the footprint of a full addition.
Open living spaces that connect the interior to the Cedar Hills yard, with structural glazing, proper insulation, and year-round usability – not a screened porch.
Attached or detached garage additions, garage conversions, and accessory dwelling units – each reviewed against Washington County’s ADU ordinance to confirm feasibility before design begins.
How We Work
One team, one contract, from the first measurement to the final walkthrough, with no handoffs between designer, builder, and trades: design and 3D layouts, material selection, permitting and inspections, careful demolition, licensed construction, and a final walkthrough, all backed by our 1-year craftsmanship warranty.
See our full design-build processA look at how we add space, light, and value to homes across Cedar Hills and the Washington County corridor.
Walk through every line that shapes the number – from foundation and framing to roofing, electrical, finishes, and Washington County permits – with a calculator built on real Pacific Northwest project data.
Engaging with Woodland for our home extension was a great decision. They were attentive to our vision, offered valuable insights, and completed the project on time. Their commitment to quality and craftsmanship is truly impressive.
A huge thank you to Woodland Construction Group for the beautiful job they did on our home extension. High-quality craftsmanship throughout.
Woodland Construction Group is an expert in their field. We are very satisfied with their work.
Timelines, permits, Washington County process, costs, and whether to go up or out. If your question is not here, call us directly.
A ground-floor room addition in Cedar Hills typically takes 3 to 5 months from permit approval to final walkthrough. A second-story addition runs 5 to 7 months depending on size and structural complexity. Washington County permit review adds 4 to 8 weeks before construction begins. We build a detailed schedule during design and communicate milestones throughout.
In Cedar Hills and the broader Beaverton-area market, home additions in 2026 run roughly $250 to $500 per square foot, with total investments typically between $80,000 and $350,000 or more depending on addition type, size, and finish level. A 400-square-foot primary suite addition usually lands between $120,000 and $200,000. Second-story additions cost more per square foot due to structural reinforcement. You receive an itemized estimate during the design phase.
Cedar Hills is unincorporated Washington County, so permits, setback reviews, and inspections go through Washington County Land Use and Transportation and Building Services – not the City of Portland or City of Beaverton. Woodland Construction Group handles the full permit application, zoning compliance review, Washington County inspections, and final sign-off. Fire and life-safety inspections are coordinated with Tualatin Valley Fire and Rescue.
Yes, in most cases. Ground-floor bump-outs and room additions are typically built off the existing structure with minimal disruption to the interior living areas. Second-story additions require more interior work during tie-in and roofline integration, but we schedule phased containment to keep the home livable. We discuss the specific impact during the design phase so you can plan accordingly.
Most Cedar Hills ranch homes sit on generous, level lots from the original 1950s-1970s master plan, which makes ground-floor additions straightforward if setbacks allow. Ground-floor additions cost less per square foot, are faster to build, and keep single-level living intact. Second-story pop-tops add significant space without consuming lot coverage and often command higher resale value. The right choice depends on your lot coverage allowance, setbacks, and how you want to use the new space. We analyze both options during the consultation.
Yes, for most Cedar Hills homeowners. Adding 400 to 800 square feet of well-built space in a neighborhood with strong Beaverton School District access and proximity to Cedar Hills Crossing typically returns strong value at resale. The 2024 Cost vs. Value Report shows Pacific Division homeowners recoup 50 to 70 percent of addition costs at resale, and many choose to build rather than sell precisely because comparable larger homes in the same neighborhood trade at a significant premium. Staying also means keeping schools, neighbors, and the community connections that matter most.
We build all addition types in Cedar Hills: ground-floor room additions, second-story pop-tops, primary-suite additions, kitchen or great-room bump-outs, sunrooms and covered patios, and garage conversions or ADU additions. Every project starts with a Washington County zoning and setback review so you know exactly what is buildable on your lot before design begins.
Family-owned and based in Northwest Portland, we build home additions across Cedar Hills, the Beaverton corridor, and the greater Portland metro – Washington County and Multnomah County alike.
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Book a free in-home consultation. We will visit the site, review Washington County setbacks for your lot, talk through addition options and budget, and give you an itemized estimate – no pressure, no handoffs.
