Free 3D Design Renders
Seattle's Trusted
Custom Deck Design
Work through a custom Seattle deck design before construction: multi-level layouts, built-in seating, pergolas and the connection to your home. Define 3D renders, structural drawings and SDCI permit responsibilities in the proposal, together with the professionals who will design and build it.
Free phone consultation · No obligation · 58 Seattle neighborhoods
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Contractor
Deck construction, repairs & replacementCUSTOM DECK DESIGN PRICES
Custom Deck Design Cost
in Seattle, per Square Foot
Custom decks in Seattle start at $18 per square foot in wood and $28 in composite, and layout ideas come free at the on-site estimate.
Starting prices for Seattle projects. Your exact price is set in writing at the free on-site estimate.
01 / CUSTOM WOOD DECK
From $18 per sq ft
Cedar or pressure-treated, built to your layout.
02 / CUSTOM COMPOSITE DECK
From $28 per sq ft
Trex, TimberTech and other composite boards.
03 / LAYOUT IDEAS
Free
Talked through with you at the on-site estimate.
04 / RAILING
From $20 per linear ft
Wood, composite, metal, cable or glass railing.
Up to 25% off your deck project.
Free on-site estimate, no obligation.
WHAT WE COVER
Custom Deck Design Services
Across Seattle
Define all six parts of the Seattle custom deck design scope before work begins. Our written estimate spells out the included work before it starts, and your workmanship warranty terms are written into your agreement.
We spell out the project scope in a written estimate before work starts, and your warranty terms are written into your agreement.
01 / CUSTOM DECK DESIGN
3D Design & Renders
A 3D concept can model the lot, house, viewing angles, sun and circulation before you commit to a layout. Discuss whether three-to-five iterations, SketchUp Pro files or photorealistic renders would help your project. Agree on the software, number of revisions and deliverables in writing.
02 / CUSTOM DECK DESIGN
Multi-Level Deck Design
Compare two or three elevations for dining, lounging and grilling, then plan stairs, landings, guard transitions and ties to the surrounding grade. Resolve the applicable Seattle code and site constraints alongside furniture placement and usable circulation.
03 / CUSTOM DECK DESIGN
Integrated Pergolas & Shade
Coordinate a fixed pergola, louvered roof or shade sail with the deck structure and suitable attachment details. Wind, snow and rain accumulation require a project-specific structural review; a four-season design claim must be supported by the actual engineering.
04 / CUSTOM DECK DESIGN
Outdoor Kitchen Integration
Plan grill stations, counter runs and sink/water lines with the proposed framing and access. Coordinate qualified plumbing and electrical work, equipment clearances, utility routing and applicable permits before finalizing the build scope.
05 / CUSTOM DECK DESIGN
LED Deck Lighting Design
Compare riser strips, post-cap lights, under-rail wash and step lighting. Size the low-voltage system, wiring and transformer to the chosen fixtures and manufacturer limits. Any spare capacity, such as a 20% margin, is planned around the fixtures you choose.
06 / CUSTOM DECK DESIGN
SDCI Permit Drawings
Define footing plans, framing details and connection schedules for the SDCI application. Identify who prepares the drawings and whether a licensed professional’s stamp is required. Visualization files alone do not establish permit compliance or structural approval.
Not sure exactly what you need?
Start with a site assessment and ask what is included in a free inspection before scheduling.
ASSESS THE DECK BEFORE CHOOSING THE SCOPE
Ask about a free inspection and schedule a time that works for you.
WARNING SIGNS
What a Custom
Deck Design Gets You
Custom design is useful when the deck must solve more than a standard platform. Bring these seven planning goals to the consultation so the layout, structure and details can be considered together.
Deck materials and construction details to consider for your project.
01
Want multi-level decks with stair connections
Plan transitions between elevations, stair connections and how people move between dining, lounging and the yard.
02
Need integrated planters, bench seating, or pergolas
Include planter weight, built-in seating and pergola support in the layout and structural brief, not as unplanned additions after framing.
03
Designing around an existing view or sun pattern
Record important views, privacy needs and sun patterns. Compare railings and shade elements from inside the house as well as on the deck.
04
Adding LED deck lighting for evening entertaining
Locate evening-use areas and safe routes. Include LED fixtures, controls, wiring access and the electrical scope in the design.
05
Building around hot tub or outdoor kitchen install
Establish hot-tub loads or outdoor-kitchen equipment, utilities and clearances early. Ordinary deck framing should not be assumed suitable for these additions.
06
Hillside lot requiring engineered footings + cable rail
A hillside lot may need engineered foundations, drainage and special access planning. Choose cable rail with its required posts and connections, not appearance alone.
07
Need 3D renders or drawings for SDCI permit approval
Separate visualization from permit documentation. Define 3D deliverables, construction details and any required professional engineering or SDCI submission.
Discuss your custom deck design options.
Describe the property, existing deck and preferred timeline. We’ll confirm a visit time that works for you.
7 CUSTOM DECK DESIGN DECK INSPIRATIONS
Custom Deck Design Ideas
for Seattle Homes
Explore seven deck project ideas, from material choices to structural repair and finishing details. Use this design inspiration to compare materials, structural repair options and finishing details for your deck.
Magnolia · DESIGN INSPIRATION
Cedar Custom Deck Design
Cedar deck restoration ideas: surface preparation and a refreshed wood finish.
Ballard · DESIGN INSPIRATION
Composite Custom Deck Design
Trex Transcend deck ideas with hidden fasteners and LED lighting.
Queen Anne · DESIGN INSPIRATION
Multi-level Custom Deck Design
IPE hardwood deck ideas with cable rail and engineered footing considerations for a hillside.
Capitol Hill · DESIGN INSPIRATION
Rooftop Custom Deck Design
Rooftop deck ideas with pedestal pavers and a bench positioned for the view.
Madison Park · DESIGN INSPIRATION
Hardwood Custom Deck Design
Brazilian IPE hardwood deck ideas for waterfront outdoor space.
Fremont · DESIGN INSPIRATION
Premium Custom Deck Design
TimberTech Premier deck ideas with integrated seating.
West Seattle · DESIGN INSPIRATION
Cedar Restoration
Cedar refinishing ideas with board replacement and railing repair.
CUSTOM DECK DESIGN TIMELINE
Seattle Custom Deck Design Timeline:
From Sketch to Build
Consultation. Inspection. Written quote. Project completion. Keep the deck scope, proposed solution and agreed price connected at every stage.
01
Day 1: Call or Send the Form
Start with four or five details: Seattle ZIP, approximate deck size, existing conditions, material ideas and timeline. Describe the custom deck design goal and ask who will answer project questions. Tell us what you want to change and ask about the next inspection or planning step.
02
Within Days: Free On-Site Estimate
Arrange the property assessment and mention urgent safety conditions.
03
Your Layout, Written Price and Start Date
Compare the defined work, materials, labor, permits and exclusions in a fixed written quote before deciding. We start with a free, no-obligation phone consultation, look at the deck on site and put the scope in a written estimate before work starts.
04
Build Time: Most Decks Take 1–3 Weeks
Agree on the crew, start date, milestones, changes and cleanup for your custom deck design project. Review progress and the written warranty at handover.
Bring photos of the whole deck, the affected area and the underside only if safely accessible. Include previous repair history and any known permit information.
Start with a call.
Start with the issue you can see. Ask for a Seattle custom deck design consultation and a scope based on your actual property.
SEATTLE PERMITS
Do You Need a Permit
to Build a Deck in Seattle?
Most new decks in Seattle need a permit, and most need only the quick subject-to-field-inspection permit. Seattle’s building department (SDCI) requires a permit in these three cases, and we tell you at the free estimate which one applies to your deck.
Source: Seattle SDCI deck requirements.
01 / HEIGHT
More than 18 inches above the ground
Measured from the ground to the deck. Lower decks do not need a permit unless one of the next two cases applies.
02 / ROOF DECKS
Built on top of part of the building
Every roof deck needs a permit, and it goes through the full addition or alteration permit.
03 / CRITICAL AREAS
In an environmentally critical area
Such as landslide-prone or flood-prone ground. The city visits the site before any permit application.
04 / MOST DECKS
A quick field-inspection permit
Most Seattle decks need only a subject-to-field-inspection permit. The full addition or alteration permit applies above 8 feet, with beams 14 feet or longer, solid decking or more than 750 square feet.
We check the permit at your estimate.
If your project needs one, it goes into your written scope.
8 REASONS TO CHOOSE A SEATTLE DECK REPAIR CONTRACTOR
Why Hire Us
for Custom Deck Design in Seattle
Experience, documented credentials, local conditions, a clear quote and a written warranty all help you evaluate a Seattle custom deck design company. Ask how each applies to your property and request the supporting documents.
01
Washington Registration & Insurance
Our Washington contractor registration is #DBSTTLE287G8, and we carry $1 million in general liability insurance, with a certificate available for your custom deck design project. Your written estimate sets out the scope before work starts.
02
Seattle Custom Deck Design Experience
Ask for relevant completed projects, material experience and structural scope.
03
Pacific Northwest Climate Knowledge
Relate moisture protection, drainage, shade, corrosion and weather exposure to the actual property and assembly.
04
Workmanship Warranty in Writing
Our workmanship warranty is in writing, and your warranty terms are written into your agreement before work starts. A manufacturer’s product warranty and our workmanship warranty cover different things; we review both with you.
05
Local Seattle Coverage
We serve all 58 Seattle neighborhoods.
06
Straightforward Phone Quotes
Discuss the scope and options before committing. Confirm consultation terms and ask for clear written pricing without on-site sales pressure.
07
Safety Response
Describe unstable components or another urgent hazard when requesting an assessment.
08
Specified Stainless or Coated Fasteners
Confirm compatible hardware for lumber treatment, connector and exposure, and identify whether it is included in the quote rather than an extra.
Speak with your custom deck design project contact.
Tell us what is happening with your deck and ask about inspection options for your Seattle address.
SEATTLE DECK REPAIR REVIEWS
What 269+ Homeowners
Say About the Work
Deck service reviews can help you compare the inspection, written price, communication and finished work.
Deck addition · Bellevue
What we appreciated most was the lack of drama.
Dylan describes adding a deck to his Bellevue home. He highlights David’s clear timeline, adjustments during rain, clean finish work and a crew that showed up, completed the work and cleaned afterward.
Planning your custom deck design Seattle deck
Magnolia · Custom Deck Design
When comparing reviews, look for: Inspection response, diagnosis, fixed repair price and the completed work.
Deck replacement · Kirkland
Very happy with how it turned out.
Tara describes replacing a deteriorated deck in Kirkland. She appreciates David’s direct explanation of the work, the stable finished deck, the team’s progress through rain and the clean site left afterward.
Planning your custom deck design Seattle deck
Ballard · Custom Deck Design
When comparing reviews, look for: Comparing custom deck design quotes, the written scope and whether options were explained without upselling.
Deck addition · North Bend
The materials feel solid, and the finish is clean.
Crystal describes a deck addition in North Bend. She praises David’s explanation of layout choices, a stair adjustment that suited the yard, the finished materials and the crew’s thorough cleanup.
Planning your custom deck design Seattle deck
West Seattle · Custom Deck Design
When comparing reviews, look for: Arrival communication, care around the home, cleanup and how the repair performs over time.
PACIFIC NORTHWEST CUSTOM DECK DESIGN
Designed for Seattle
Rain, Moss and Salt Air
Rain, evergreen shade, seasonal freeze–thaw conditions and Puget Sound salt exposure all belong in a Seattle custom deck design assessment. Moss and slow drying can hide moisture problems around board ends and structural connections.
For shaded or north-facing decks in Fremont and Ravenna, inspect moisture retention and ventilation. Waterfront properties around Magnolia and Alki may need additional attention to corrosion. Sloped or elevated sites in Queen Anne and Capitol Hill call for a close review of supports and access. We confirm the actual conditions at each address.
- Compatible stainless or coated fasteners. Select for the lumber treatment, connector and exposure.
- Appropriately treated framing. Use ground-contact-rated material where the assembly and exposure require it.
- Joist and ledger moisture protection. Detail flashing, drainage and protection tape as part of the repair.
- Finishes suited to the site. Confirm any marine-grade or waterfront coating against the product’s approved uses.
Read the background on deck construction and repair and the Seattle SDCI deck requirements.
Plan for repeated Seattle rain, shade and drying conditions at the actual property. Specify corrosion-compatible stainless or coated fasteners as part of the complete lumber, connector and exposure design.
12 SEATTLE CUSTOM DECK DESIGN FAQS
Seattle Custom Deck Design
Questions, Answered
Review costs, timing, scope, permits, materials, credentials and warranty terms for your project.
Talk to a real builder
Call with the deck size, materials, location and timeline.
BBB Accredited Business. Free phone consultation, no obligation.
Custom decks in Seattle start at $18 per square foot for wood or cedar and $28 per square foot for composite, with up to 25% off qualifying projects. Layout ideas are free at the on-site estimate.
We can discuss your custom deck design fee separately from construction. The design scope should identify the survey, concepts, revisions, renders, engineering and permit documents; the build estimate then prices the agreed materials, structure and details.
We put the agreed design fee and its terms in your written agreement.
Yes. At the free estimate we walk the space with you and talk through layouts, levels and materials, so you see what fits before you commit.
Yes. The on-site estimate is free and comes with no obligation. You get a written price and decide on your own time.
Tell us the size of the deck and what you see, and send photos if you have them. That is enough to talk through the likely scope on the phone. The exact number comes from the free visit, because rot, footings and framing hide under the boards.
If your project needs a Seattle permit, we tell you at the estimate and include it in your written scope. Most decks need only a subject-to-field-inspection permit from Seattle SDCI.
We can plan your design around the survey, initial concepts, visualization and revisions, then final drawings and permit submission. Let’s agree on the review stages and your decision dates so the schedule accounts for the actual engineering and approval work.
We confirm your construction start date once the design is approved. Scope changes, engineering, homeowner decisions and city review can change the schedule; submission and approval are separate milestones.
Consider multi-level zones, an integrated pergola, an outdoor kitchen, LED lighting and cable railing for the way you intend to use the deck. Evaluate installation and maintenance cost separately from resale expectations.
We can price the custom features separately so you can choose where to invest. Multi-level layouts, built-in seating, pergolas, integrated lighting and railings affect different parts of the work; your quote should show the actual scope instead of adding generic premiums together.
Define how the deck designer will coordinate with your architect, landscape designer and structural engineer. Share site information, proposed elevations, utility locations and project responsibilities.
Agree on CAD/file standards, revision ownership and SDCI submission requirements. Talk with us about the design team and the coordination responsibilities for your project.
Compare IPE hardwood for its natural appearance, Trex Transcend for a composite option, Western Red Cedar for a traditional PNW look and TimberTech AZEK for a PVC option that may fit rooftop or waterfront requirements.
We can compare IPE and Trex by appearance, structural suitability, applicable fire and exposure requirements, care and the selected product’s written warranty. The design should specify the actual boards and installation details together.
Confirm the actual scope with Seattle SDCI Tip 312. Seattle identifies decks more than 18 inches above ground and roof decks as permit triggers; environmentally critical areas can add requirements. We can discuss the applicable drawings, review and inspections for your property.
Multi-level geometry, pergolas, outdoor kitchens and hot-tub framing may introduce structural calculations, utilities and additional review. Identify each required approval with the design professionals and permitting authority.
Financing options are available for your deck project; ask about them during your free phone consultation. If you plan to finance your project, get your lender’s written terms before you commit.
Ask for the cash project price and the complete financing terms separately.
Ask for written coverage of framing, ledger attachment, footing connections, railings and stairs, together with exclusions, claim steps and any transfer rights on sale. Talk with us about the workmanship coverage for your project. Only the contractor’s written warranty establishes the duration and coverage.
We can review Trex, TimberTech and IPE material coverage separately from workmanship coverage. Match the exact product, collection, purchase date and installation requirements to the manufacturer’s current warranty, then confirm the contractor’s written terms for the agreed work.
58 NEIGHBORHOODS · 7 DISTRICTS
A Deck Designer Near You,
Anywhere in Seattle
Explore all 58 Seattle neighborhoods across seven districts, with Seattle ZIP context from 98101 to 98199. Select your neighborhood for deck construction, repair, materials and property considerations. For nearby Bellevue or Kirkland, share your project address so we can check the applicable city or King County permit requirements.
Downtown Seattle 1
Capitol Hill & Central Seattle 12
North-Central Seattle 18
Northwest Seattle / Ballard 6
Queen Anne & Magnolia 4
West Seattle 11
Don't see your area?
Share the exact address and deck concern when asking about project availability.
READY TO START?
Get Your Free
Seattle Custom Deck Design Estimate
Discuss what your custom deck design needs, the likely scope and cost, and when work could start. Begin with the property and project goals, then request a clear written proposal.
Free phone consultation · No obligation