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Cascade Pro Inc builds custom room additions for homeowners in Tacoma, Seattle, and communities throughout Pierce County and King County. With over 15 years of experience in residential construction, we design and build additions that blend seamlessly with your existing home while adding the space and functionality your family needs. Whether you are adding a bedroom, expanding a kitchen, building a sunroom, or creating a multi-room wing, our team manages every phase from architectural plans through final inspection.
A growing family, aging parents, or the need for a dedicated guest room are the most common reasons homeowners in the Tacoma and Seattle area add bedrooms. A master suite addition can include a walk-in closet, en-suite bathroom, and private sitting area. Cascade Pro Inc designs bedroom additions that match your existing roofline, siding, and architectural style so the new space looks like it was always part of the home.
Many older homes in Pierce County and King County have smaller kitchens and living rooms that do not fit the way families live today. A bump-out or full room addition can open up your kitchen, add a dining area, or create a great room that connects your indoor living space to your backyard.
The Pacific Northwest climate makes a well-insulated sunroom a valuable addition. These enclosed spaces bring in natural light while keeping you comfortable year-round. We build both three-season and fully insulated four-season rooms with proper HVAC connections.
If your lot does not allow you to build out, building up is an option. A second-story addition can double your living space without changing your home’s footprint. This type of project requires structural engineering and careful planning, and Cascade Pro Inc has the experience to execute it properly.
Cascade Pro Inc handles your entire room addition project from concept to completion:
Architectural Design — We work with you to develop plans that meet your space needs, match your home’s existing architecture, and comply with local setback requirements, lot coverage limits, and building codes in your city.
Permits & Engineering — Room additions in Washington state require building permits, structural engineering, and in many cases a site plan review. If your home is in a historic district or an HOA community, there may be additional approval steps. Cascade Pro Inc prepares all documentation and manages the permitting process with local building departments in Tacoma, Seattle, and surrounding jurisdictions.
foundation to Finish — Our crews pour foundations, frame walls, install roofing, run electrical and plumbing, insulate, drywall, and complete all finish work including flooring, trim, paint, and fixtures. We coordinate every trade so you have one point of contact throughout the build.
A well-planned room addition is one of the smartest investments you can make in your Tacoma or Seattle area home. Here is why homeowners choose to build additions:
More affordable than buying a bigger home — Moving to a larger house means paying today’s market prices, plus closing costs, moving expenses, and potentially higher property taxes. A room addition lets you get the space you need while staying in the home and neighborhood you already love.
Increase your property value — Quality additions add real value to your home. A well-built addition that matches the style of the existing house is one of the best ways to increase your home’s market value over time.
Stay in your neighborhood — Many homeowners in established Tacoma and Seattle neighborhoods don’t want to leave their community, schools, or neighbors. An addition lets you grow your home without relocating.
Customize your living space — Unlike buying a different house, an addition is designed specifically for your needs—whether that’s a larger kitchen, a first-floor master suite, a home office, or a space for a growing family.
Room addition costs depend on many factors including the type and size of the addition, the complexity of the design, site conditions, and the finishes you select. Every project is unique, and the best way to understand your investment is through a free consultation with our team.
Bump-out additions — Expanding an existing room by extending the footprint of your home. These tend to be the most affordable type of addition and can make a big difference in a cramped kitchen or small bedroom.
Standard room additions — Adding a new bedroom, family room, or living space to your home. These involve foundation work, framing, roofing, and tying into your existing systems. Costs vary based on the size of the addition and the level of finish.
Master suite additions — A full bedroom and bathroom addition with higher-end finishes. These are a popular choice for homeowners looking to add a primary suite without disrupting the rest of the home.
Second-story additions — Building up instead of out. These are the most involved type of addition and require significant structural work, but they allow you to add substantial living space without reducing your yard.
We provide free, detailed estimates for every project so there are no surprises. Call (253) 338-1693 to schedule your consultation.
We manage every step of your room addition with a structured process that keeps the project on track:
1. Free Consultation — We visit your property, discuss your goals and budget, evaluate the site, and outline what is possible given your lot, zoning, and existing home structure.
2. Design & Planning — Our team develops architectural plans, selects materials, and provides a detailed written estimate.
3. Permits & Approvals — We submit all required permits and manage communication with your local building department.
4. Construction — Our crew and trusted subcontractors build the addition according to plan, with regular updates and inspections throughout.
5. Final Walkthrough — We walk through the completed addition together, address any punch list items, and make sure everything meets your expectations.
Cascade Pro Inc builds room additions throughout the Puget Sound region, including Tacoma, Seattle, Puyallup, Lakewood, Federal Way, Kent, Auburn, Renton, Bellevue, Bonney Lake, University Place, Gig Harbor, Fife, Sumner, and surrounding communities in Pierce County and King County.
Ready to add the space your family needs? Call Cascade Pro Inc at (253) 338-1693 or fill out the form on this page to schedule a free on-site consultation. We will evaluate your property, discuss your vision, and provide a clear, detailed estimate.
Get a free consultation from Cascade Pro Inc. We will evaluate your property, discuss your addition plans, and provide a detailed estimate. Call (253) 338-1693 or fill out the form below.
We proudly serve homeowners throughout the Tacoma and South Puget Sound region. Click on your city below to learn more about our services in your area.
