Home Additions in Hillsboro & Nearby OR. Areas

A custom-built home addition offers the ideal solution when you love your home but need more space. At Keith Green Construction, we help Hillsboro homeowners expand their living space with additions that feel like they’ve always belonged. Whether you need a guest suite, larger dining area, or multi-purpose family room, our team delivers innovative, functional additions tailored to your goals.

With over 30 years of construction experience, we’re more than just builders—we’re partners in helping you enhance your lifestyle and increase your home’s long-term value. From concept to completion, we provide expert guidance, high-quality craftsmanship, and dependable communication at every step of your project.

Room Additions That Blend with Your Existing Home

We understand the importance of creating additions that look and feel like a natural part of your home, not an afterthought. Our design-build process ensures that every new room is properly integrated with your home’s layout, style, and structural flow. Whether you’re expanding a single room or building out a new wing, we pay close attention to continuity in materials, rooflines, trim, and finishes.

We build everything from home offices and dens to laundry rooms, kids’ bedrooms, and casual living spaces. Our team works with your existing layout to find the best location and design that fits your needs, without disrupting the flow of your daily life.

Additions for Growing Families and Modern Lifestyles

As needs evolve, so should your home. Many Hillsboro families come to us for space to accommodate life changes, like welcoming a new child, supporting aging parents, or creating better work-from-home setups. We build master suite additions with private bathrooms, dedicated home gyms, hobby rooms, and guest spaces that offer both privacy and convenience.

Our kitchen bump-outs and nook expansions are perfect for households needing more storage, dining space, or improved traffic flow. We design these additions to improve everyday functionality while complementing your home’s aesthetic and increasing its overall value.

Bonus Rooms, Lofts & Flexible Living Areas

Need extra square footage without completely reconfiguring your home? We specialize in building bonus rooms and upper-level lofts that can serve various purposes—playrooms, home theaters, craft spaces, or even dual-use guest/office combos.

We also convert underused areas into livable square footage for homes with attic or garage space. Every addition is carefully engineered, insulated, and finished to meet building codes and maximize comfort. Whether your goal is expansion or transformation, we deliver the creative solutions and technical expertise to make it happen.

Why Hillsboro Homeowners Count on Keith Green Construction

Keith Green Construction has earned the trust of Hillsboro homeowners by providing dependable, detail-focused construction services since 1993. Our local knowledge, skilled team, and commitment to quality set us apart. We guide clients through the home addition process with transparency, professionalism, and a deep respect for your home and time.

As licensed general contractors, we manage the entire scope of work—from initial design and permits to structural work, electrical, plumbing, and final inspections. You don’t have to worry about coordinating with multiple subcontractors. With Keith Green Construction, you get one experienced team that does it all—and does it right.

Home Addition FAQs

Q: Can you match my current home’s siding, roof, and trim?
A: Absolutely. We take extra care to source matching materials or near-perfect substitutes so your new addition looks completely cohesive with the existing structure.
Q: Do you help with designing the layout and structure?
A: Yes. We collaborate with you to design an addition that maximizes space, meets building codes, and aligns with your home’s style. Our goal is to create a layout that works and feels right.
Q: How do I get started with a home addition in Hillsboro?
A: Just reach out! We’ll schedule a free consultation to discuss your ideas, assess your property, and provide a clear plan with a timeline and pricing.

Proudly Serving Hillsboro and Surrounding Communities: Beaverton, Aloha, Forest Grove, Cornelius, North Plains, Sherwood, and more.