Question 1

What is the difference between PVC and Composite decking?

Accepted Answer

PVC decking is made entirely of synthetic plastic (Polyvinyl Chloride) and contains no organic material, making it highly resistant to mold and moisture. Composite decking is a blend of recycled wood fibers and plastic. While both are low-maintenance compared to wood, PVC is generally lighter and stays cooler in the sun, while modern composites offer a more realistic wood grain texture.

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Question 2

Do I need a permit for my deck project in King County?

Accepted Answer

Yes — in most cases. King County requires a building permit for any deck over 200 square feet, decks attached to the house, or decks more than 30 inches above grade. We handle the entire permit process for you: drawings, structural calculations, and submission. Most residential permits in King County are approved within 4–8 weeks.

Question 3

How long does a typical deck installation take?

Accepted Answer

Most residential decks take 1–3 weeks from first day on-site to completion, depending on size and complexity. A straightforward 400 sq ft composite deck typically runs 5–8 working days. Custom curved decks or multi-level builds with pergolas can take 3–4 weeks. Permit approval (handled before we start) is the longest lead time — usually 4–8 weeks.

Question 4

What kind of warranty do you provide on craftsmanship?

Accepted Answer

We provide a 5-year craftsmanship warranty on all structural work and installation. This covers any defects in our labor — loose fasteners, railing movement, board lifting, and framing issues. Decking materials carry their own manufacturer warranties: Trex composites are backed by a 25-year fade and stain warranty, and most PVC products carry lifetime structural warranties.

Question 5

Can you build decks during the Seattle rainy season?

Accepted Answer

Yes — we build year-round. The Pacific Northwest rainy season is our normal operating environment. We use moisture-resistant framing lumber treated for ground contact, stainless or hot-dipped galvanized fasteners, and composite or PVC decking that is unaffected by rain. We schedule around heavy weather windows and keep sites tarped when needed. Most of our best projects were built in November through March.

Question 6

What decking material lasts longest in Seattle's climate?

Accepted Answer

PVC decking has the best longevity in the Pacific Northwest — no wood fiber means zero rot, mold, or moisture absorption. Brands like Azek or TimberTech PVC are rated for 30+ years with minimal maintenance. High-quality composite (Trex Transcend, Fiberon Paramount) runs a close second at 25+ years. Western Red Cedar, properly sealed and re-stained every 2–3 years, can last 20+ years and remains a beautiful natural choice.

Question 7

How much does a deck cost in Seattle?

Accepted Answer

Deck costs in the Seattle area typically range from $18–$45 per square foot installed, depending on material and complexity. A 400 sq ft pressure-treated wood deck runs $8,000–$14,000. The same footprint in composite is $16,000–$28,000. Cedar comes in around $14,000–$22,000. Custom curved decks, multi-level builds, and rooftop projects start around $35,000. We provide free on-site estimates with full material breakdowns.

Question 8

Do you offer financing options?

Accepted Answer

Yes — we partner with GreenSky and Hearth financing to offer flexible payment plans. Options include 12-month no-interest, and longer-term plans at competitive rates. Financing applications take about 5 minutes and most decisions are instant. Ask us about current promotions when you request your free quote.

Question 9

Do I need HOA approval before building a deck in King County?

Accepted Answer

Yes — and HOA approval must happen before you apply for any city or county permit, not after. Most HOAs in King County, particularly in planned communities like Sammamish, Issaquah Highlands, and West Bellevue, require you to submit an architectural modification request with your deck plans, materials list, and color samples. The HOA Architectural Control Committee typically takes 2–4 weeks to review. Building without prior HOA approval can result in forced removal at your expense. We prepare and submit HOA documentation packages as part of our service.

Question 10

How long does HOA deck approval take in Sammamish, Issaquah, and Bellevue neighborhoods?

Accepted Answer

Planned communities in these areas tend to have active Architectural Control Committees with detailed requirements. In our experience: Sammamish Plateau communities typically take 3–4 weeks; Issaquah Highlands and Klahanie run 2–4 weeks; West Bellevue planned communities vary from 2–6 weeks. Submit in January or February if you want a spring construction start — spring is peak season and committees can get backlogged. We help prepare submission packages that get approved on the first pass.

Question 11

What are the setback requirements for a deck in King County — how close to my property line can I build?

Accepted Answer

In unincorporated King County, residential decks typically must maintain a 5-foot setback from side and rear property lines, though specific zones may require more. In Seattle, standard zoning allows a 5-foot side and rear setback for accessory structures, but attached decks may be subject to the same setbacks as the main dwelling in some zones. Bellevue, Kirkland, Redmond, and other incorporated cities each have their own codes — setbacks range from 3 to 10 feet depending on zone and deck height. A critical exception: if your deck is over 30 inches in height, most jurisdictions apply stricter setbacks than for at-grade structures. We pull an official setback report during our estimate and design your deck to comply.

Question 12

What happens if my contractor discovers rot or structural damage to my house during deck construction?

Accepted Answer

When we find unexpected rot or structural damage, we stop, photograph everything, and walk you through what we found before doing anything. We provide a written change-order estimate for the additional repair scope. Repair costs vary: a rotted rim joist section might add $800–$2,500; deeper structural issues can run $3,000–$8,000. We handle these repairs in-house through our parent company, Complete Consulting and Construction, without bringing in a separate contractor and adding weeks of delay.

Question 13

What deposit and payment schedule should I expect for a deck project in Seattle?

Accepted Answer

We typically require a 10–20% deposit at contract signing to reserve your build slot and order materials. A second draw of 40–50% is due at framing completion, and the final 30–40% is due at project completion and your walkthrough sign-off. We never ask for more than 50% of the total before substantial work is underway on-site. The full payment schedule with clear milestone definitions is written into your contract before any work begins.

Question 14

Can my neighbor object to or block my deck building permit in King County?

Accepted Answer

In most jurisdictions, permits for standard residential decks are ministerial permits — approved based on code compliance, not neighbor opinion. A neighbor cannot veto your permit if your deck meets setback, height, and code requirements. However, if your project triggers a variance, a shoreline permit, or a critical areas review, those processes include a public notice period during which neighbors can submit written comments. In our experience, neighbor complaints targeting the permit itself rarely succeed when the project is code-compliant.

Question 15

Are there special restrictions for building a deck near a wetland, steep slope, or critical area in King County?

Accepted Answer

Yes — King County's Critical Areas Ordinance (CAO) governs construction near wetlands (typically 50–300 ft buffers), streams and rivers, shorelines, steep slopes over 15–25% grade, and landslide or erosion hazard areas. If your property is near any of these features, you may need a critical areas review or shoreline substantial development permit before building. We assess critical area applicability during every pre-permit site visit and engage county permitting staff early to understand what is possible before investing in design work that won't be approved.

Question 16

Do I need a structural engineer for my deck project in King County?

Accepted Answer

Not always — but sometimes. Standard ground-level attached decks that follow conventional prescriptive framing from the IRC typically don't require an engineer's stamp. However, a structural engineer is required or strongly advisable when your deck is over living space or a garage, is multi-level or elevated more than 8–10 feet, is on a steep hillside, involves a curved or cantilevered design beyond prescriptive limits, or when Seattle SDCI specifically requires engineering. Engineering adds $400–$1,200 to the project but produces stamped drawings that sail through permit review. We coordinate with licensed structural engineers for all projects that need them as part of our permit services.

Question 17

How do I know if my existing deck needs repair, resurfacing, or full replacement?

Accepted Answer

Grab a screwdriver and probe the frame. If the tip sinks more than ¼ inch into any joist, beam, ledger, or post, that member has rot and the frame needs structural repair or full replacement — new decking boards won't fix a compromised frame. If the frame is firm and solid, resurfacing (new composite or PVC boards over the existing structure) is likely viable at 30–50% less than full replacement. Full replacement makes sense when posts show decay at grade, the ledger is pulling away from the house, the deck is springy underfoot, or the structure is 20-plus years old. We assess every deck before recommending a path — we won't sell a full replacement when resurfacing is genuinely appropriate.

Question 18

What should a deck building contract in Washington State include?

Accepted Answer

A complete contract should specify: (1) detailed scope with materials called out by brand, product line, and color — never vague 'composite decking TBD'; (2) who handles permitting and pays fees; (3) a fixed price or clear change-order process for unforeseen conditions; (4) a payment schedule tied to construction milestones; (5) estimated start and completion dates; (6) warranty terms for craftsmanship and manufacturer materials; (7) the contractor's Washington State license number verifiable at secure.lni.wa.gov plus proof of liability insurance; and (8) a lien waiver at final payment. Never sign a contract requiring more than 50% deposit before work begins or lacking a written change-order clause.

Question 19

How do I compare competing deck contractor bids in Seattle — what red flags should I watch for?

Accepted Answer

Compare bids at the line-item level, not just the total. Red flags include: a bid 30–40% below competitors (means cheaper materials, unlicensed labor, or planned change-order padding); no mention of permit handling; a deposit request of 50% or more before work begins; vague material specs with brand TBD; inability to provide a Washington State contractor license number; no proof of liability insurance; and high-pressure 'sign today or lose the slot' tactics. A legitimate contractor will give you time to review and compare bids.

Question 20

Does building a deck in fall or winter in Seattle affect quality?

Accepted Answer

No — experienced crews using proper materials produce the same quality in winter as summer. Concrete footings cure correctly with appropriate admixtures; Seattle rarely reaches problematic temperatures. Composite and PVC install cleanly in cold weather. The one caveat: cedar decks should not receive their first stain until the wood's moisture content drops below 15%, which may mean scheduling the seal coat for a dry spring window. Practical upsides of winter scheduling include better contractor availability, faster permit approvals, and shorter material lead times — a fall or winter start often means a deck ready for Memorial Day.

Question 21

My King County permit was submitted — what happens if it comes back with a correction notice?

Accepted Answer

Correction requests are routine and not a sign something went wrong — they are the plan reviewer's way of asking for clarification or additional detail. Common corrections on residential deck permits include missing structural calculations, unclear footing specifications, insufficient ledger connection details, or a request to substitute an engineered beam for a prescriptive one. When a correction notice arrives, we respond within a few business days with the updated documentation. A single correction cycle typically adds 2–4 weeks to the permit timeline. Multiple cycles are uncommon but can push the total to 8–10 weeks. We prepare our permit packages to preemptively answer the questions plan reviewers most commonly raise — our goal is zero corrections on first submittal. For time-sensitive projects, both Seattle SDCI and King County permit offices offer expedited resubmittal appointments for a supplemental fee, which we can arrange on your behalf.

Question 22

What does a composite or PVC deck manufacturer's warranty NOT cover — and what can void it?

Accepted Answer

Manufacturer warranties on composite and PVC decking are strong, but they contain exclusions every homeowner should understand. Common exclusions include: damage from pressure washing above 1,500 PSI; staining from organic debris left in contact with the surface for extended periods; discoloration from rubber-backed furniture mats that trap moisture; damage from improper cleaning chemicals such as chlorine bleach or solvents; board modifications that expose the core without sealing with manufacturer-approved end caps; and damage attributable to improper installation. Installing through a manufacturer-certified contractor — as we are for Trex, TimberTech, and Fiberon — ensures your warranty remains fully valid and enforceable. Keep your purchase documentation and completion photos; both are required when filing a claim.

Question 23

Can my deck support a hot tub, outdoor kitchen, or heavy planters — and how much does engineering for that add?

Accepted Answer

Yes — but only if the structure is engineered for the load from the start. A filled hot tub with occupants typically weighs 3,500–5,500 lbs, roughly 100–150 lbs per square foot in the hot tub zone — more than twice the standard residential live load design of 40 lbs/sq ft. Designing for these loads requires larger diameter footings, tighter post spacing, supplemental beams, and in most cases a structural engineer's letter for the permit. Engineering for hot tub support typically adds $300–$700 in engineer fees and $1,500–$3,500 in additional framing and concrete work. Plan for the load before we pour footings — retrofitting a standard deck to support a hot tub added later is expensive and sometimes requires partial demolition. Tell us about hot tubs, kitchens, or heavy features during your free estimate and we will design the structure correctly the first time.

Question 24

Do you remove and haul away my existing deck before building the new one?

Accepted Answer

Yes — old deck demolition and disposal is standard in our replacement process. Cost for demo and haul-away runs $800–$2,500 depending on deck size and construction type; a 400 sq ft single-level deck takes one crew-day. We sort materials on site and haul lumber to a licensed disposal facility. Demolition commonly reveals hidden conditions — rot at the ledger, damaged rim joists, pest activity, or footing placements that do not meet current code. We photograph all discoveries before proceeding and provide a written change order for any structural repairs identified before rebuilding. If your existing deck was originally built without a permit, your new construction permit covers the replacement structure — no retroactive permit is required for the demolition itself.

Question 25

What are my financing options if my credit score is below 720 — can I still get approved?

Accepted Answer

Yes — our lending partners work with a range of credit profiles, not just prime borrowers. GreenSky uses a waterfall approval model that runs your application through multiple bank partners simultaneously, so applicants with scores in the 620–680 range are frequently approved at adjusted rates or shorter promotional terms. Hearth specializes in home improvement financing and has specific programs for the 600–680 credit tier, typically offering 24–60 month secured installment loans at 12–29% APR. For homeowners with meaningful equity, a HELOC is often the most cost-effective path — current HELOC rates are typically 7–9% and interest may be tax-deductible for home improvement use. If financing is important to your decision, mention it early in our conversation. We never require financing approval before scheduling your free estimate.

Deck Building FAQs — Seattle & King County

What is the difference between PVC and Composite decking?

Do I need a permit for my deck project in King County?

How long does a typical deck installation take?

What kind of warranty do you provide on craftsmanship?

Can you build decks during the Seattle rainy season?

What decking material lasts longest in Seattle's climate?

How much does a deck cost in Seattle?

Do you offer financing options?

Do I need HOA approval before building a deck in King County?

How long does HOA deck approval take in Sammamish, Issaquah, and Bellevue neighborhoods?

My HOA only allows certain deck materials or colors — can you still help?

How much does a deck permit cost in King County and how long does it take?

Does my new deck need a building inspection in Washington State?

What are the risks of building a deck without a permit in Washington State?

What are the structural load requirements for a rooftop or elevated deck in Seattle?

Does composite decking get slippery when wet in Seattle?

What is membrane decking and when is it the right choice?

Are cable railings code-compliant in King County, and how do they work?

What deck lighting options are available?

Can I resurface my existing deck with composite instead of a full replacement?

How do I prevent moss and algae from growing on my deck in Seattle?

How do I prepare my deck for Seattle's winter rainy season?

What routine maintenance does a composite or PVC deck need in the Pacific Northwest?

Does adding a deck increase my home's resale value in King County?

Why are deck prices higher in Seattle than the national average?

How far in advance should I book a deck contractor in Seattle?

Should I build my deck myself or hire a licensed contractor in Washington State?

How does the deck building process work from first call to completed project?