Deck Builders Seattle, WA
Infinity Construction GC LLC is a trusted deck builder in Seattle, providing custom deck construction and major deck replacements for homeowners throughout Seattle, Washington. As experienced Seattle deck builders, we specialize in structurally sound, code-compliant decks designed for the Pacific Northwest climate—where permitting, inspections, drainage, and long-term durability matter as much as appearance.
We build custom decks across Seattle and surrounding neighborhoods, working with homeowners, designers, and architects who need a deck contractor in Seattle capable of managing framing, load paths, waterproofing, and sequencing—not just surface materials. Our focus is on deck construction that performs over time, meets city requirements, and integrates cleanly with the home.
Our Deck Building Services
Deck Construction
We provide full deck construction in Seattle, building custom decks designed for long-term structural performance—not cosmetic shortcuts. Every project is approached with a structural-first mindset, accounting for load paths, moisture exposure, and residential deck code requirements.
Deck & Exterior Framing
Proper framing is the backbone of a safe, durable deck. As experienced deck contractors in Seattle, we handle deck and exterior framing with attention to fastening schedules, spans, and integration with the existing structure to prevent movement, sagging, and premature failure.
Ground-Level & Elevated Deck Framing
We construct both ground-level and elevated decks, accounting for elevation changes, lateral loads, and drainage. Elevated decks are framed with added attention to safety, stiffness, and code-compliant guard support.
Ledger & Footing Installation
Ledger attachment and footing placement are common failure points in deck installation. We install both correctly from the start, using approved fastening methods, spacing, and depth to meet Seattle inspection and structural requirements.
Stairs & Guard Framing
Stairs and guards are framed for strength, consistency, and safety. We build to meet rise/run requirements, guard height standards, and load resistance—without relying on last-minute fixes to pass inspection.
Why Homeowners Choose Infinity Construction GC LLC for Deck Construction in Seattle
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Structural Deck Expertise
We come from a structural construction background, which directly impacts how our decks are framed, supported, and attached. From footings to ledger connections, our work reflects what homeowners expect from a professional Seattle deck builder—not minimum compliance. -
Code-Aware Execution
Seattle and Washington State deck codes are strictly enforced, especially for ledgers, guards, and stairs. Our deck construction process in Seattle is inspection-driven from day one to avoid delays, corrections, and costly rework. -
Hands-On Oversight
Your deck project is overseen by builders who understand deck framing, load paths, and exterior detailing—not passed down a chain of project managers. That hands-on involvement shows up in cleaner inspections and better outcomes. -
Clear Communication
Deck projects fail when expectations are vague. We provide accurate scopes, realistic timelines, and direct answers so you know exactly what’s being built and why. -
Local Accountability
We build decks throughout Seattle and the surrounding Puget Sound area. Our reputation as a Seattle deck contractor depends on decks that hold up to weather, inspections, and daily use—not short-term shortcuts.
Deck Materials & Design Options
Wood Decking Options
We work with pressure-treated lumber & natural wood species suited for the Pacific Northwest. Wood decks are selected & detailed with moisture exposure, fastening methods & long-term maintenance requirements in mind. We also coordinate deck staining in Seattle when appropriate to extend lifespan and protect exposed surfaces.
Composite & PVC Decking Systems
Composite and PVC decking offer durability and reduced maintenance, but performance depends on proper framing, ventilation, and fastening. We install manufacturer-approved systems to prevent sagging, movement, and premature wear.
Railing Systems & Lighting Integration
We install code-compliant guard systems using wood, metal, cable, or composite components. Lighting integration—including step lights and rail lighting—is planned during framing to avoid surface-mounted shortcuts later.
Built-In Features & Add-Ons
Where structure allows, we incorporate built-in seating, planters, privacy screens, and integrated stairs. All add-ons are framed and supported correctly so they don’t compromise deck performance or inspections.
Our Deck Building Process — From Design to Completion
01
Consultation & Site Evaluation
We review your goals, site conditions, elevation changes, and attachment requirements. Early evaluation helps identify structural constraints, code considerations, and feasibility before design or permitting begins.
02
Design, Engineering & Material Selection
We finalize layout, framing approach, and material systems—including wood, composite, or hybrid assemblies—based on durability, maintenance expectations, and structural performance. Designs are aligned with Seattle deck permit requirements from the start.
03
Permitting & Pre-Construction Coordination
We prepare permit-ready documentation, coordinate sequencing, and confirm inspection requirements before deck construction begins—reducing delays, revisions, and mid-project surprises.
04
Structural Deck Construction
Footings, ledgers, framing, stairs, and guards are installed with code compliance and long-term performance in mind. Construction is executed in inspection-ready phases, not rushed assemblies.
05
Final Inspection & Walkthrough
We complete required inspections, address final details, and walk the finished deck with you to ensure it meets structural, safety, and performance expectations.
Request a Deck Building Consultation
If you’re planning a new deck or deck replacement in Seattle, work with a deck builder Seattle homeowners trust—one who understands structural requirements, permitting, and inspection standards, not shortcuts.
Infinity Construction GC LLC delivers deck installation in Seattle with long-term performance, safety, and code compliance in mind.
Request a consultation today to discuss your deck project.
What Seattle Deck Builders Must Navigate
Building a deck in Seattle involves more than selecting materials and laying boards. Deck projects are subject to zoning rules, structural requirements, and inspection standards that vary by site, elevation, and attachment method. Understanding how these factors interact is critical to avoiding delays, redesigns, and failed inspections.
Infinity Construction GC LLC builds decks with direct awareness of the regulations, agencies, and site conditions that affect deck construction in Seattle.
City of Seattle Permitting & Inspections
Seattle deck projects are reviewed and inspected through the Seattle Department of Construction & Inspections (SDCI). Depending on scope and location, decks may require coordination across multiple review areas, including:
- Zoning and setback compliance
- Structural framing and attachment review
- Guard, stair, and safety requirements
- Drainage and stormwater considerations
- Site-specific or environmentally sensitive conditions
Decks that are improperly planned often face corrections during inspection or require costly revisions mid-project.
Washington State Building Code Requirements for Decks
Deck construction in Seattle must comply with Washington State–adopted building codes governing:
- Deck framing spans and fastening schedules
- Guard and stair safety requirements
- Lateral load and attachment methods
- Weather and moisture resistance detailing
Builders unfamiliar with these requirements often underestimate scope, cost, and sequencing—leading to inspection failures or compromised performance.
Seismic, Moisture & Site Conditions in Seattle
Seattle’s environment presents unique challenges for deck construction, including prolonged moisture exposure, varied topography, and seismic design requirements under Washington State code.
As a result, decks must be built with:
- Proper ledger attachment and lateral load connections
- Adequate footing depth and bearing
- Moisture-resistant detailing and ventilation
- Inspection-ready framing and fastening visibility
- Drainage planning to prevent long-term deterioration
These requirements are routinely enforced during deck inspections.
Why This Matters to Homeowners
Deck projects most often fail due to:
- Incomplete or non-compliant permit submissions
- Improper ledger or footing installation
- Framing issues identified during inspection
- Moisture or drainage problems introduced during construction
Infinity Construction GC LLC plans and builds decks with these constraints accounted for before construction begins, reducing delays, redesigns, and costly mid-project corrections.
Seattle Deck Builders by Neighborhood
Infinity Construction GC LLC builds custom decks throughout Seattle, including neighborhoods where site conditions, elevation changes, access constraints, and permitting requirements vary significantly.
We regularly work in areas such as Ballard, Queen Anne, Magnolia, West Seattle, Capitol Hill, and Green Lake.
Each neighborhood presents different challenges related to slope, attachment methods, access, setbacks, and inspection requirements. Our experience as local Seattle deck builders allows us to plan for these conditions upfront—reducing delays, revisions, and mid-project surprises.
Get a Deck Estimate
Whether you’re planning a new deck or replacing an existing one in Seattle, choose a deck contractor Seattle homeowners rely on for structural integrity and inspection-ready execution.
Infinity Construction GC LLC delivers professional deck installation in Seattle built to perform long-term in the Pacific Northwest.
Request an estimate to discuss your deck project.
Seattle deck projects are subject to strict permitting and inspection requirements, especially for ledger attachments, footings, guards, and stairs. In addition, prolonged moisture exposure, sloped lots, and older homes introduce structural and drainage challenges that must be addressed during design and framing—not corrected after inspection.
Most deck projects in Seattle require a permit, particularly when the deck is attached to the home, elevated, or includes stairs and guardrails. Permits typically trigger structural and safety inspections. Decks built without proper permits or inspection-ready framing often face costly corrections or delays.
The most common issues include improper ledger attachment, inadequate footing depth, incorrect guard or stair construction, and poor moisture detailing. These problems usually stem from insufficient planning before construction begins. Decks that are designed and framed with inspection requirements in mind move through the process far more smoothly.