Patio Covers & Pergolas contractor —
Seattle & Puget Sound.
A proper cover lets you use your patio nine months a year. We integrate roof tie-ins, drainage, and weather-rated power for heaters and lighting.
A proper patio cover lets you use your patio nine months a year in the Puget Sound. We integrate roof tie-ins, drainage, and weather-rated power for heaters and lighting so the space is functional from October through May.
Solid roof covers (matching house roof) integrate seamlessly and provide full rain protection. Louvered systems (Struxure, Renson) open for sun and close for rain — premium price but maximum flexibility. Pergolas with retractable canopies split the difference.
What we build
SCOPE- 01Solid roof + louvered options
- 02Engineered post + beam
- 03Heater + fan rough-in
- 04Integrated drainage
- 05Sealed lighting circuits
- 06Skylight options
Phased process
PROCESS- 01
Design + permit
Structural drawings for any covered structure attached to house. Permit through AHJ; freestanding low covers often exempt.
- 02
Foundation
Concrete piers or footings sized to column load and frost depth.
- 03
Frame + posts
Engineered post-and-beam structure with proper lateral bracing. Tie-in to house roof or freestanding ridge beam.
- 04
Roofing + drainage
Match existing roof or install louvered system with integral gutters and downspouts.
- 05
Electrical + finish
Weather-rated lighting, heater rough-in, fan blocking, ceiling finish (T&G cedar or beadboard).
Spec sheet
SPEC- +Solid roof: match existing composition or standing-seam
- +Louvered: Struxure, Renson, Apollo Opening Roof systems
- +PT or LVL beams sized to engineer drawing
- +Cedar or composite T&G ceiling
- +Integrated gutter and downspout system
- +Weather-rated infrared heaters and ceiling fans on dedicated circuits
- +Recessed LED lighting in soffits
Cost drivers
COST- Cover type (solid vs louvered)Solid $15K–$35K → louvered $35K–$75K for similar footprint
- Tie-in to existing house+$3K–$10K for roof modification and flashing
- Heaters, fans, and lighting+$2K–$8K for full electrical integration
- Skylights or polycarbonate sections+$500–$2,500 per section for light transmission
Codes & permits
COMPLIANCE- IRC R301.6 (snow load)
Patio cover roofs must be designed for local snow load — typically 25 psf in lowland PNW, 35–50 psf in higher elevations.
- IRC R703 (siding tie-in)
Wall connection requires proper flashing to prevent water intrusion.
Is patio covers & pergolas the right call?
- →Existing patio gets unusable from October–April due to rain
- →Outdoor kitchen or fire-feature install — needs cover for year-round use
- →Hot tub area — privacy and rain protection
- →Architectural backyard upgrade tied to deck or pool
Covers questions
FAQQ.01
Louvered vs solid — which is better?
Louvered for maximum flexibility — open for sun, close for rain, automated with rain sensor. Solid for simplicity, lower cost, and full year-round dry space. Most clients pick solid unless they specifically want sun control.Q.02
Do I need a permit?
Yes for any cover attached to the house. Freestanding low pergolas (under 12 ft eave height) are often exempt — check your AHJ.Q.03
Can I add a cover to an existing deck?
Yes if the deck framing was designed for the additional load. Pre-existing decks often need reinforcement or new posts to footings — we verify during feasibility.
Official resources & sources
- Source ↗WSEC 2021 Residential Energy CodeEnvelope, HVAC, hot-water and air-sealing requirements
- Source ↗WA HB 1110 — Middle housing lawStatewide middle-housing zoning preemption
- Source ↗WA HB 1337 — ADU statewide rulesTwo-ADU baseline, no owner occupancy, parking limits
- Source ↗WA Dept. of Commerce — ADU resources
- Source ↗WA L&I contractor license lookupVerify Golden State ADU Builders Inc · GOLDESA747LZ
- Source ↗Washington State Building Code CouncilStatewide adopted codes (IRC, IBC, WSEC)
Ready to scope your covers project?
Send a paragraph and the address. A licensed PM replies within one business day with next steps.
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