Custom Decks and Railings
We design and build custom decks, ramps and railings for homes and businesses in Lewis, Thurston, Mason & Cowlitz County.
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Custom Decks & Railings by O’Neil Custom Exteriors LLC
Transforming Outdoor Living Spaces Across Lewis, Cowlitz, Thurston & Mason County
At O’Neil Custom Exteriors LLC, we bring over 30 years of experience to every deck and railing project we build. As a family-owned and operated business, we take pride in designing and constructing beautiful, durable, and safe outdoor spaces that enhance your home and lifestyle. Whether you’re looking to create a new custom deck, repair an existing structure, or add accessibility with a disability ramp, our team is here to deliver exceptional results you can trust.
Your Local Deck Building Experts
From concept to completion, we specialize in custom deck design, construction, and repair for homes and commercial properties. Our craftsmanship, attention to detail, and commitment to quality ensure your outdoor space not only looks stunning but stands strong for years to come.
We proudly serve:
- Lewis County
- Cowlitz County
- Thurston County
- Mason County
As a local contractor, we understand the demands of the Pacific Northwest climate and install decking materials that resist moisture, decay, and daily wear—keeping your deck safe, functional, and beautiful in every season.
Our Deck & Railing Services
Custom Deck Design & Construction
Create an outdoor living space that perfectly fits your home and needs. We design and build decks in a wide range of materials and styles, from traditional wood to low-maintenance composite decking. Whether you want a simple platform deck or a multi-level masterpiece, we provide personalized solutions tailored to your vision.
Deck Repairs & Renovations
If your deck is showing signs of age, damage, or instability, our team offers professional repair and restoration services. We replace rotting boards, fix structural issues, reinforce railings, and upgrade outdated materials to bring your deck back to life—safely and affordably.
Custom Railings
We install high-quality, code-compliant railings designed for both safety and aesthetics. Choose from wood, metal, cable, or composite railing options to match your deck’s style and enhance your outdoor space.
Disability Ramps & Accessibility Solutions
We are proud to design and build ADA-friendly disability ramps that offer safe, smooth access to homes and businesses. Our ramps are built to last, improve mobility, and comply with all safety standards while blending beautifully with your exterior.
Why Choose O’Neil Custom Exteriors LLC?
- Family-Owned & Operated
We deliver personalized service and treat every project as if it were our own home.
- Over 30 Years of Professional Experience
Our crew knows what works, what lasts, and how to build structures that remain strong in the Pacific Northwest climate.
- Custom Craftsmanship
Every deck, railing, and ramp is designed to your specifications and built with precision.
- Local, Trusted, and Reliable
Homeowners throughout Lewis, Cowlitz, Thurston, and Mason counties rely on us for honest work, quality materials, and exceptional results.
- Free Estimates
We provide clear, upfront pricing with no pressure and no surprises.
Start Your Deck Project Today
Whether you're dreaming of a new outdoor living space, need professional deck repairs, or want to add a safe accessibility ramp, O’Neil Custom Exteriors LLC is ready to help.
Contact us today for a free estimate and discover why our family-owned team is the trusted choice for deck construction and exterior improvements in Western Washington.
