Custom Deck Building in Bellevue WA

Selected Composite Discounts: We pass our direct contractor pricing on top tier Trex TimberTech and Azek composite boards straight to you so you dont pay retail

Local Pacific Northwest Suppliers: We source structural heavy timber from Dunn Lumber and Parr Lumber because big box store wood just twists and warps in our weather

Steep Slope Engineering: From Somerset to Lakemont we handle the complex structural engineering and Bellevue MyBuildingPermit approvals for high hillside decks

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Zero Rot EngineeringWaterproof

Zero Rot Engineering

We over engineer our ledger board flashing and use Simpson Strong-Tie hardware to guarantee water never gets trapped against your house

Wholesale Composite PricingSmart Budgets

Wholesale Composite Pricing

Composite decking is incredibly expensive at retail. We leverage our high volume accounts to get you massive discounts on the actual decking materials

Permit ExpertsFully Legal

Permit Experts

Bellevue is notoriously strict about critical areas and steep slopes. We submit the engineering and handle the city planners so you dont get a stop work order

Firm Start DatesOn Time

Firm Start Dates

We do not tear down your old deck in June and leave you staring at a muddy hole until August. Once we start digging footings we stay until the railings are done

Deck Building Bellevue | Renova Contractors LLC

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Bellevue Deck Building Cost Guide

2026 Bellevue pricing reality

Bellevue deck building in 2026 commonly ranges from $28,000 to $55,000 for a smaller cedar or pressure-treated deck, $45,000 to $95,000 for composite systems with Trex, TimberTech or Azek, and $100,000 to $220,000+ for elevated decks, lake-view decks, waterproof under-deck living space, steel framing, glass railings or difficult hillside access. Permits, engineering, guardrail loads, ledger flashing, drainage, stairs, critical slope conditions and HOA review can change the price fast.

If you are reading local Reddit threads about deck quotes people are constantly shocked by the numbers. But building a deck in Bellevue is essentially building an exterior structural addition.

Here is what actually drives the budget for a Bellevue deck:

  • The 30 Inch Rule: If your deck is less than 30 inches off the ground you often skip the permit process entirely. But the second you go over 30 inches Bellevue requires structural permits guardrails and massive concrete footings
  • Steep Slopes: If you live on a hill in Cougar Mountain digging footings requires specialized equipment and a geotechnical engineer which adds thousands to the baseline cost before we even buy wood
  • Material Upgrades: Cedar looks great on day one but rots in ten years. Upgrading to TimberTech or Trex composite is a hefty upfront cost but it never splinters or needs staining. We help soften that blow by passing our 30 to 40 percent material discounts straight to you
  • Railing Systems: Cable railings and glass panels offer amazing views of the Cascades but they cost significantly more than standard aluminum or wood balusters
ServiceCost RangeAverage CostLabor CostMaterial Cost
Deck Material$3,185.00 - $5,390.00$4,287.50$3,185$1,102.50
Deck Installation$5,915.00 - $10,010.00$7,962.50$5,915$2,047.50

Step 1 of 4

Tell us what kind of deck we are pricing.

Good budget ranges start with deck size, height, rebuild scope, access, and whether the structure needs engineering or permits.

Deck size

Scope level

Layout change

Clear Remodeling Process:
Our 5-Step Coordination Plan

Remodeling has moving parts. We define scope, document assumptions, and coordinate each phase so you know what is happening from consultation through final walkthrough.

1

Site Inspection & Layout

Setback VerificationWe check the Bellevue Land Use Code to make sure your dream deck size doesnt illegally cross into the city required property setbacks
Material SelectionWe bring samples from Trex and Azek so you can see exactly how the composite colors look against your siding in real sunlight
Engineering ReviewIf you are on a steep slope we bring in our structural engineers to map out exactly how massive the concrete footings need to be
2

Permits & Excavation

City ApprovalsWe submit the lateral load plans and footing specs through MyBuildingPermit to get the official green light
Digging the FootingsWe dig past the frost line and pour massive concrete piers. Bellevue inspectors come out to verify the hole depth before we pour
Old Deck DemoIf we are replacing an old rotting deck we safely tear it down and haul all the heavy wet wood to the local dump
3

Structural Framing

The Ledger BoardWe attach the main ledger to your house using proper IRC code compliant flashing so water can never rot your rim joist
Setting the PostsWe install pressure treated posts on elevated galvanized Simpson Strong-Tie bases to keep the wood completely off the wet concrete
Joists & BlockingWe frame the deck with selected lumber from Dunn Lumber and install mid span blocking so your deck never bounces when you walk on it
4

Decking & Railings

Hidden FastenersWe install your TimberTech or Trex boards using hidden clip systems so there are zero ugly screw holes visible on the surface
Picture FramingWe lay a perpendicular border board around the edge of the deck to hide the ugly cut ends of the composite planks for a higher-grade look
Setting the RailsWe bolt the railing posts directly into the structural framing so they are incredibly rigid and pass the city safety push test
5

Final Details

Stairs & SkirtingWe build the structural stairs and install optional composite skirting around the base to hide the dirt and framing underneath
Final InspectionsWe coordinate the final walk through with Bellevue Development Services to officially close out your building permit
Site CleanupWe use magnetic sweepers to find every dropped screw in your grass and pack up so you can fire up the grill immediately

Custom Decking Materials in Bellevue

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Renova Contractors LLC is a licensed general contractor for Seattle remodeling

We carry $2 million in liability insurance and a full Washington state contractor bond and coordinate work to meet local code requirements and inspections where required. We focus on clear documentation, practical communication, and accountable project execution.

Industry memberships and local associations

Bellevue Deck Building Reviews

Real feedback from deck building projects in Bellevue.

  • 5 out of 5 stars

    Renova Contractors did a great job at building my deck, looks great and is definitely better than my old deck. I know a little bit about decks and I can say they definitely built me a deck that will withstand the rainy season in Seattle and won’t fall apart after five years. Thank you Mike, it was a pleasure working with your company.

    Read full review on Google
    Жанузак Бекишов
  • 5 out of 5 stars

    I recently hired this team to repair my roof after a fire and to build a deck above it, and I couldn’t be more pleased with the results. The project was complicated — after the fire, the roof began leaking, and they had to gut part of the ceiling to let everything dry out. They handled every step professionally and thoroughly. They rebuilt the damaged walls, repaired all the interior areas affected by water, replaced the trim, and repainted so everything looked fresh and seamless. They were also great about addressing every punch-list item, big or small. Throughout the entire process, they were on time, on budget, and consistently communicated what they were doing. The quality of their work really shows, and my home looks better than it did before the damage. Overall, I had a great experience and would highly recommend them to anyone needing reliable, skilled contractors.

    Read full review on Google
    Yulin Zhang
  • 5 out of 5 stars

    I'm so happy with the work Renova Contractors LLC did on my home renovation! They were professional, efficient, and the price was fair

    Read full review on Google
    Pablo A Hernandez Gonzalez
  • 5 out of 5 stars

    These gentlemen were extremely professional, personal, and punctual. The three P's that every home owner is looking for. They were happy to handle all of our home repair jobs and did so quickly. From painting the walls and our deck, to grouping the floors in the bathroom, these guys handled it all with skill. They even did some touch up painting that we didn't request, they just saw it needed to be done and did it. I cannot say enough nice things about them.

    Read full review on Google
    Terra Claybrook
  • 5 out of 5 stars

    We had an issue with water leaking in from the corner of our daylight basement, due to how the house was built there were multiple different issues with water leaking in our basement and it was a mess with black mold and water damage. We had Renova come out and look and they were very straightforward and transparent with what needed to be done, they were not just trying to get the job they were honest. They came all the way out from Seattle to Stanwood and did a very thorough job in repairing the black mold damage and they completely dug around the outside foundation of our daylight basement to water proof very thoroughly. It was a very big project but it needed to be done. We had them re paint our downstairs, build a 1,000 square foot back patio, build a new back deck, and we plan on using them to do more work. We are very happy with their hard work and attention to detail and highly recommend them.

    Read full review on Google
    Jacob Hambidge
  • 5 out of 5 stars

    I had a positive experience working with the Renova team for a kitchen restoration project requiring drywall replacement work, resetting cabinetry, counter top setting, sink and dishwasher placement / connection, tile and finishing. They delivered quickly and effectively on a kitchen restoration which included kitchen cabinet installation of existing cabinets which were present onsite and temporarily removed. The team communicates consistently, and follows through on their word. I would trust them to work on future projects.

    Read full review on Google
    Ben Mullins

Why Renova Contractors LLC is the Top Deck Builder on the Eastside

Clear Structural Bids

We quote the complex engineering and massive footings upfront so you do not get crushed by change orders when we hit hard soil

3D Lock — Fixed costs

Trex, TimberTech, Azek, Deckorators, Simpson Strong-Tie, Feeney, Fortress and Regal Ideas

IRC Code Experts

Permitted
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Clean Backyards

We dont leave rusty nails in your grass. We run magnetic sweepers daily and keep our lumber stacks completely organized

Zero Rot Engineering

Stacks icon

We use selected flashing tape over every single joist and highly engineered Simpson hardware to ensure water never destroys the framing

Local Selected Wood

We refuse to use twisted retail wood. We source our framing materials from Dunn Lumber and Parr Lumber for a rock solid carefully level structure

Didn't Find the Right Option? Request a Detailed Project Estimate

Defined scope with inclusions, exclusions, and allowances

Detailed estimate tied to site conditions and selected finishes

Organized coordination for materials, trades, permits, and inspections

Frequently Asked Questions

Answers about scope, estimates, scheduling, and project coordination

Do I absolutely need a permit to build a deck in Bellevue

If the deck is less than 30 inches off the ground at all points and is not attached to the house you generally do not need a building permit. But if it is over 30 inches or attaches to the house a full structural permit from Bellevue Development Services is legally required.

What is the real difference between Trex and TimberTech

Both are excellent but they have different cores. Traditional Trex is a wood plastic composite meaning it has wood fibers inside. Some TimberTech lines and Azek are PVC based meaning there is zero wood organic material at all making them completely immune to water absorption. We can show you samples of both.

Why do you buy lumber from Dunn or Parr instead of Home Depot

Quality control. The pressure treated lumber from big box retail stores is often incredibly wet and lower grade. When it dries in the sun it twists like a pretzel. We buy selected select structural lumber from Dunn Lumber and Parr because the boards are actually straight and dry which makes your deck carefully level.

Can I just put new composite boards over my old wood framing

Maybe but usually no. Composite boards are very heavy and flexible. If your existing joists are 24 inches apart or if there is any rot at all on the top of the old joists the composite will sag and eventually fail. We always do a structural probe of the old framing but 90 percent of the time we have to rebuild the frame to safely support composite.

How deep do the concrete footings have to go

In Bellevue the IRC dictates footings must go at least 12 inches below undisturbed soil to get past the frost line. But if you live on a slope in Somerset our engineers often require us to dig 3 to 4 feet deep or even use helical piles to hit solid bearing capacity.

Are cable railings safe for kids

Yes. Modern stainless steel cable railings are tensioned incredibly tight. The Bellevue building code requires the cables to be spaced so that a 4 inch sphere cannot pass through them at any point preventing small kids from slipping through while keeping your views completely open.

How do you hide the screws on a composite deck

We use hidden fastener clip systems. The clips slide into grooves on the sides of the composite boards and drill directly into the joist below. It leaves a carefully uniform gap between the boards and keeps the top surface completely smooth and barefoot friendly.

How much does a deck cost in Bellevue?

Many Bellevue decks range from $28,000 to $95,000 depending on size, material, stairs and railing. Elevated, engineered, waterproof or glass-railing decks can exceed $150,000.

Do Bellevue decks need permits?

Many do, especially elevated decks, structural rebuilds, ledger-attached decks, stairs, guardrails or work near slopes. We check Bellevue Development Services and MyBuildingPermit requirements before construction.

Field Notes for Custom Deck Building in Bellevue WA

Most people look at the deck and think about the boards first, or the railing, or just that the whole thing needs to feel safer and less half finished but with decks the visible part is not always where the actual problem is, so for Renova Contractors LLC the first look is usually footings, ledger, beams, posts, stairs, railings, flashing, drainage, access, slope, and whether the existing frame is even worth saving, because new decking does not fix weak joists, bad ledger flashing, soft posts, or a railing system that was never blocked correctly, and in Bellevue some jobs are simple enough, like replacing boards or cleaning up a small repair, but some are not simple at all because slope, tree cover, wet winters, HOA rules, tight side-yard access, higher labor costs, exterior review, and structural work can all change the job before anyone even picks composite color, so a deck in Lake Hills is not automatically the same thing as a deck in Somerset, West Bellevue, Bridle Trails, Newport, Downtown Bellevue, Bel-Red or near Lake Washington, same service name but different property, different access, different risk, and sometimes a different permit conversation too, the numbers have to stay as ranges not promises because a real deck estimate depends on site access, hidden rot, material level, inspection needs, labor intensity, and whether the work touches structure or exterior details, a cheaper bid usually removes something from that list and for a tiny surface repair maybe that is fine, but not when the skipped part is what is holding the deck up

The permit side is not one answer for every deck either, depending on what is actually being changed Bellevue deck work can involve Bellevue Development Services, MyBuildingPermit, structural review, drainage questions, trade permits, HOA rules, or condo design rules if those apply, replacing a few boards is not the same thing as rebuilding framing, changing stairs, modifying railings, touching the ledger, or adding new structural work, so that should be checked before demo, ordering, or scheduling instead of after the deck is already opened up, what Renova Contractors LLC is really doing on a custom deck build is not just sending someone to install boards, it is site review, framing condition, material choice, railing details, access, cost, permit path if needed, and order of work, brands like Trex, TimberTech, Azek, Deckorators, Simpson Strong-Tie, Feeney, Fortress, and Regal Ideas only matter if the product fits the actual deck, climate, frame condition, maintenance expectations, railing style, inspection needs, and budget all matter, and if direct contractor pricing is available on selected composite boards we pass that through instead of making material a hidden markup game, but better boards still do not save a bad build, if the railing choice changes blocking that needs to be known early, if composite changes fastening or stair details that needs to be in the number, if the ledger looks questionable it should not be buried under a nice board sample, and if slope or drainage affects footings or access it belongs in the estimate, because the goal is not a deck that photographs well for one week, it is a deck that still makes sense after weather, use, maintenance, and inspection reality catch up with it, so for Bellevue homeowners Renova Contractors LLC handles deck building with clear scope, real pricing conversations, code-aware planning, and durable installation, not trying to make the job sound easier than it is, just trying to make it predictable enough that the finished deck feels solid, useful, and worth the money instead of a pile of expensive boards sitting on top of unanswered questions

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Need pricing, scope help, or a real contractor to look at the project?

Send the details, call, text, or message us. Renova Contractors LLC reviews the scope, site conditions, timing, materials, and next steps before turning it into a quote.

  • Project scope review
  • Estimate direction
  • Material and schedule questions
Call directly: 206-255-2708

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Open daily, 9am-9pm. Call or text for urgent scheduling questions.
sales@renova.contractors
221 1st ave w, #247, Seattle, WA 98119