Patio, Deck, and Railing Construction, Repair & Replacement in Portland, OR
Custom Outdoor Spaces Built to Last in the Pacific Northwest
Outdoor living is a way of life in Oregon—and your patio or deck should reflect your lifestyle while standing up to the elements. At Keith Green Construction, we’ve been creating, repairing, and replacing decks, patios, and railing systems for over 32 years. Whether you dream of a brand-new cedar deck, need structural repairs to an existing space, or want to update your railing for safety and style, we deliver results that combine beauty and long-lasting durability.
Our team knows how to build outdoor spaces that look great and function flawlessly—no matter how wet the Portland weather gets. With specialized expertise in dry rot repair and waterproof membrane systems, we ensure your deck or patio is safe, solid, and ready for anything.
Why Choose Keith Green Construction for Your Outdoor Project?
Keith Green Construction is more than a local contractor—we’re part of the Portland community. Founded in 1993 by Keith Green, our company is built on family craftsmanship, honest communication, and attention to detail. Every project is treated with the same care and respect we’d give our homes.
When it comes to decks, patios, and railings, we take a full-service approach: from design consultation to structural construction to final finishes. You’ll always have access to your project manager, foreman, and sales rep, so you’re never left in the dark.
What sets us apart:
- Over 32 years of experience in outdoor construction
- Experts in waterproof membranes and dry rot repair
- Personalized design consultations
- Eco-friendly materials are available upon request
- Workmanship guarantee and free estimates
New Patio & Deck Construction
Whether starting from scratch or expanding your current outdoor space, we build decks and patios tailored to your home and vision. From modern low-maintenance composite materials to classic wood construction, we help you choose the right materials and layout to match your goals, climate, and budget.
Our team ensures the final product is stunning and built with proper drainage, ventilation, and framing to ensure long-term performance. We also offer integrated railing systems, steps, lighting upgrades, and more to complete your outdoor retreat.
Repair & Replacement Services
The Pacific Northwest weather can be harsh on exposed wood and decking materials. Over time, moisture can lead to warped boards, dry rot, wobbly railings, and unsafe surfaces. That’s where we come in.
We repair and replace:
- Deck boards, joists, and structural framing
- Rot-damaged support posts and beams
- Failing railings or outdated styles
- Loose or broken stairs
- Damaged patio surfaces or membranes
- Waterproofing systems and flashing
Railing Installation & Upgrades
A strong, well-installed railing is critical for both safety and aesthetics. We install and upgrade railing systems that complement your deck or patio and meet all local building codes.
Whether you prefer modern metal, traditional wood, or low-maintenance composite options, we’ll guide you through the right choices for your home and needs.
Our railing options include:
- Powder-coated steel and aluminum
- Pressure-treated wood railings
- Composite and vinyl systems
- Glass panel or cable-style railings
- Custom posts and top caps
Weatherproof & Built to Last
What good is a beautiful deck if it doesn’t withstand Portland’s rain and moisture? We install waterproof membranes like IB Roof Systems’ Deck Shield and Dec Tec to protect your outdoor surfaces and framing from hidden water intrusion. These solutions extend the life of your deck, help prevent costly rot, and keep your substructure dry and firm.
We also provide expert dry rot repair and structural reinforcement, so your deck or patio doesn’t just look amazing—it performs for decades.
Eco-Friendly Materials & Sustainable Building Practices
At Keith Green Construction, we care about your home and the environment. That’s why we offer green construction options, including composite decking made from recycled materials and sustainably sourced wood. We also buy materials from local suppliers whenever possible to support the community and reduce environmental impact.
From design to demolition, our team follows environmentally responsible practices so you can enjoy your new deck or patio with a clear conscience.
Whether you’re building a brand-new deck or restoring one that’s seen better days, you can count on Keith Green Construction to deliver quality, service, and craftsmanship every step.