How long does a typical custom deck build take from start to finish?

It depends on size and complexity, but most projects run a few weeks once permits are approved, plus whatever lead time the local building department needs to review drawings. Weather windows matter too, since framing and footings go faster during drier stretches. We'll give you a realistic timeline for your specific project before work starts.

What should I check before hiring a contractor to build my deck?

Confirm they're licensed, bonded, and insured, and ask whether they pull the building permit themselves rather than leaving that to you. Ask to see photos of completed deck work, not just siding or roofing, and get the scope, materials, and payment schedule in writing before anything starts. A contractor who's reluctant to put details in writing is a red flag.

Do different composite decking brands install the same way?

No. Hidden fastener systems, board profiles, and clip spacing vary by manufacturer, and using the wrong screws or spacing can void that product's warranty. We follow each manufacturer's specific installation guide rather than treating composite decking as one uniform product.

What's the real difference between stainless steel and hot-dip galvanized deck hardware?

Stainless steel resists corrosion the longest and is worth the extra cost on ledgers, hardware near the ground, and anything exposed to salt-influenced air. Hot-dip galvanized hardware is more affordable and still performs well for general framing connectors in most locations. We'll spec the right hardware for each part of your deck rather than using one grade everywhere.

Do I need a permit to build a deck in Arlington or unincorporated Snohomish County?

In most cases, yes — especially for any deck attached to the house or elevated above a certain height, though some small, low, freestanding decks may be exempt depending on the specific jurisdiction's rules. We handle the permit drawings and submission either way, so you're not the one figuring out which office to call. Building without a required permit can create problems later when you sell the home.

Custom Decks Built for Arlington's Wet, Salt-Air Climate

Building Decks for Arlington's Marine Climate

Arlington sits close enough to Puget Sound and the Stillaguamish valley that homes here deal with a specific mix of weather most inland deck builders never have to think about: salt-tinged air moving up off the Sound, long stretches of driving rain from fall through spring, and shaded, damp lots that grow moss faster than most homeowners expect. None of that is a problem for a deck that's built correctly. It becomes a problem fast for a deck that isn't.

We've built and repaired enough decks around Snohomish County to know where the shortcuts show up first. It's rarely the decking boards themselves — it's the ledger connection, the fasteners, the framing underneath, and the drainage path that either sheds water away from the house or lets it sit and soak in. A deck built for a dry climate and shipped here as a standard plan will usually show its age within a few wet seasons. A deck built with this climate in mind will still be tight and solid well past that.

What a Deck Built for This Area Actually Needs

Ledger Flashing and Water Management

The ledger board — the piece that bolts your deck to the house — is the single most common failure point we see on older or poorly built decks in wet climates like ours. If the flashing isn't tucked properly under the house wrap or siding above it, and instead relies on caulk or sealant alone, water works its way behind the ledger over time. That leads to rot in the rim joist and framing, sometimes long before it's visible from outside. Correct flashing detail — metal flashing integrated with the water-resistive barrier, not just sealed over it — is non-negotiable on every ledger-attached deck we build.

Fasteners and Hardware

Standard zinc-coated screws and hangers corrode faster in salt-influenced air and in constant contact with wet, treated lumber. We use stainless steel or hot-dip galvanized fasteners and connectors rated for modern treated lumber, which is more corrosive to lower-grade hardware than older treatments were. Cutting corners on hardware is invisible on installation day and expensive five years later when brackets rust and fasteners back out.

Air Space and Drainage Underneath

Decks built low to the ground with poor ventilation underneath trap moisture against the framing and encourage rot and moss growth in the shaded space below. We pay attention to joist height above grade, the drainage slope of the ground beneath the deck, and gapping between boards so the structure can actually dry out between the rain events that define most of our year.

Choosing Decking Material for This Weather

There's no single "best" decking material — there's a best material for your budget, your maintenance tolerance, and how much shade and moisture your specific lot deals with. Here's how the common options actually perform in a wet, moss-prone climate like ours:

Material	Upfront Cost	Moisture & Moss Resistance	Maintenance	Realistic Lifespan Here
Pressure-treated lumber	Lowest	Fair — needs sealing to perform well	Annual cleaning, re-sealing every 1-2 years	10-15 years with upkeep
Cedar	Moderate	Good natural resistance, but greys and softens without care	Regular cleaning and periodic finish	15-20 years with upkeep
Capped composite	Higher	Very good — resists moss staining and moisture absorption	Occasional washing, no sealing	25-30+ years
PVC/vinyl decking	Highest	Excellent — essentially non-absorbent	Occasional washing	25-30+ years

Homeowners on shaded, tree-covered lots that stay damp longer into spring tend to be happier long-term with a capped composite or PVC product, simply because they don't have to fight moss staining and softwood maintenance every year. Homeowners with more sun exposure and a willingness to maintain a wood deck often get excellent results from cedar or well-sealed pressure-treated lumber at a lower upfront cost. We'll walk through the honest trade-offs for your specific lot rather than pushing one option on you.

Framing and Substructure — the Part Nobody Sees

A deck's long-term durability is decided in the framing stage, not the finish stage. Footings need to be sized and set below the frost depth required by local code and need to bear on solid, well-draining soil — not backfill that holds water against the post base. Beams and joists need to be sized for the actual load, including the weight of rain-soaked lumber and any hot tub or heavy furniture you're planning for, not just a generic span table applied without checking your layout.

If you're planning composite or PVC decking, joist spacing usually needs to be tighter than what's typical for wood decking — most composite manufacturers require 16-inch spacing, and some require 12-inch spacing on diagonal installations. Framing a deck for wood spacing and switching to composite later is a common mistake that leads to a bouncy, under-supported deck surface.

Railings, Stairs, and Code Basics

Guardrails, baluster spacing, and stair geometry aren't places to guess. Current residential code generally requires guardrails on any walking surface more than 30 inches above grade, baluster spacing that prevents a 4-inch sphere from passing through, and consistent stair rise and run from top to bottom — inconsistent steps are one of the most common fall hazards on older decks. Exact requirements depend on the code edition adopted by the local jurisdiction at the time of permitting, which is why we pull permits and build to whatever is currently in force rather than working from memory or an old plan set.

Stairs and landings deserve the same attention as the deck surface itself. In a climate with this much rain, stair treads without adequate texture or drainage become genuinely slick, especially once moss or algae starts to form in shaded stairwells. We factor tread material and drainage into the stair design up front instead of treating it as an afterthought.

How We Approach a Custom Deck Project in Arlington

Every deck we build follows the same sequence, whether it's a simple ground-level platform or a multi-level deck with stairs and built-in features:

On-site visit to measure the space, check grade and drainage, and talk through how you actually plan to use the deck.
Material and design discussion, including honest cost and maintenance trade-offs for your specific site conditions.
Permit drawings prepared and submitted to the local building department, sized and detailed to meet current code.
Removal of any existing structure, done carefully to protect landscaping and the house exterior.
Footings, framing, and ledger installation, with flashing and hardware matched to the climate.
Decking, railing, and stair installation, with attention to fastener pattern and board gapping for drainage.
Final walkthrough with you, plus site cleanup, before we consider the job done.

We don't start cutting lumber until the permit and design are settled, and we don't consider the project finished until you've walked it with us and it holds up to your own inspection, not just ours.

Living With a Deck Through Our Moss Season

A well-built deck in this climate still needs some seasonal attention. This isn't a high-maintenance list — it's the handful of things that actually matter here:

Sweep leaves and needles off the deck surface before the wet season sets in — trapped organic debris is what feeds moss and algae growth.
Check that gutters and downspouts route water away from the deck footprint rather than dumping onto or under it.
Wash wood decking with a deck-safe cleaner (not straight bleach, which can damage lumber fibers) once or twice a year, more often on shaded sections.
Re-seal or re-stain wood decking on a 1-2 year cycle depending on sun exposure — shaded boards hold moisture longer and need attention sooner.
Avoid aggressive pressure washing directly on wood — it's a common way to gouge softwood and open it up to faster water absorption.
Inspect fasteners and hardware yearly for early rust or corrosion, especially on decks closer to the Sound.
Trim back overhanging branches and vegetation that keep sections of the deck in permanent shade, since that's exactly where moss takes hold first.

What Affects the Cost of a Custom Deck

Every deck is priced around a handful of real variables, not a flat rate per square foot. The biggest factors we see are:

Footprint and shape — a simple rectangle costs less per square foot than a multi-level deck with angles and cutouts.
Material — pressure-treated lumber costs the least upfront; capped composite and PVC cost more but reduce long-term maintenance.
Height above grade and stairs — taller decks need more substantial footings, framing, and guardrail work.
Railing style — basic wood or metal baluster railing costs less than cable, glass, or composite railing systems.
Demolition — removing and disposing of an existing deck adds cost before the new build even starts.
Site access — decks on tight lots or with limited equipment access take longer to build.

As a very broad range, most custom deck projects in our area land somewhere between a modest wood platform and a larger composite deck with railing and stairs, with material choice being the single biggest swing factor in the final number. We'll give you a real number for your specific project, not a generic estimate, once we've seen the site and talked through what you want.

Why Hire a Crew That Already Works in Arlington

A deck built by a crew that already knows the area isn't just a convenience — it changes the outcome. We know how the soil around here drains, which lots tend to hold moisture longer into spring, and how shaded yards behave differently than open ones just a few miles away. We're familiar with the local permitting process, which keeps your project from stalling on paperwork. And because we're already working in Snohomish County regularly, we're not guessing at how this climate treats a deck over ten or twenty years — we're building based on what we've actually seen hold up and what hasn't.

That local knowledge shows up in small decisions throughout the project: where we position drainage, which hardware we spec, how we detail the ledger flashing, and which material we'll honestly recommend for your specific lot instead of a one-size-fits-all answer.

If you're planning a new custom deck or replacing one that's showing its age, we're happy to take a look and give you a straightforward, no-pressure estimate. There's a form below — tell us a bit about your project and we'll go from there.