Get an itemized cost breakdown in 60 seconds — framing, decking, railings, stairs, and labor — then permit-ready plans engineered for your grade, your soil, and your city's code.
Homeowners shop decking color. Inspectors look at the ledger, the footings, and the guardrail posts — the three places decks actually fail. When a deck collapses, it's almost never the surface that gave way.
That's why we engineer the structure first and let you choose the finish second. It's also why our plan sets get through plan check without a fight.
Without a drawing set, every contractor prices a different deck. Spreads of 40% are normal — not because one is cheap, but because they're quoting different structures.
Above about 30 inches, or attached to the house, and you're in permit territory. Find out after it's framed and you're paying twice — once to build it, once to fix it.
When footings and spans get decided in the field instead of on paper, every surprise becomes a change order — and you have no leverage once the crew is already on site.
Four steps to an itemized estimate — the same variables a contractor uses to build your bid.
Itemized materials, labor, and design
BestHouse is a California-licensed civil engineering firm and our design, drafting, and inspection services are only available for California properties. We can't process a request outside California at this time.
Pick a time below and we'll walk through your result together. Takes 15 minutes.
Height and location change everything about how a deck has to be built. Find yours below.
Ground LevelPlatforms at or near grade — no guards, no stairs, and often the simplest permit path. The fastest way to define an outdoor room.
See full pricing →
RaisedA single-story deck with stairs to the yard. Guardrails, stair geometry, and ledger attachment put it squarely in permit territory.
See full pricing →
ElevatedDecks on tall posts over walkable space. Beam sizing, lateral bracing, and footing design are non-negotiable here — this is where engineering earns its fee.
See full pricing →
Multi-LevelTiers stepping down a slope, connected by stairs. Ideal for hillside lots; each level is engineered for its own loads.
See full pricing →
Pool DeckEngineered for constant moisture, slip resistance, and barrier code around the water. Material choice matters more here than anywhere.
See full pricing →
RooftopDecks over living space or garages. Waterproofing assemblies, drainage, and load path get reviewed so the room below stays dry.
See full pricing →The cheapest board is rarely the cheapest deck. Here's what each actually costs you over time.
| Material | Relative cost | Lifespan | Maintenance | Best for | Watch out for |
|---|---|---|---|---|---|
| Pressure-treated | $ | 10–15 yrs | Clean & seal every 2–3 yrs | Budget builds, large footprints | Warping and splintering if upkeep slips |
| Cedar / redwood | $$ | 15–20 yrs | Seal every 2–3 yrs | Natural look without composite cost | Softer wood — dents in high-traffic areas |
| Composite | $$$ | 25–30 yrs | Wash occasionally | Most homeowners — the value sweet spot | Gets hot in direct sun; quality varies by brand |
| PVC / capped polymer | $$$$ | 30–50 yrs | Wash occasionally | Poolside, coastal, heavy moisture | Highest upfront cost; less natural look |
| Tropical hardwood | $$$$ | 40+ yrs | Oil annually to keep color | Premium projects, design-forward homes | Hard to work with — labor runs higher |
Rule of thumb: materials are roughly a third of your total. Labor and substructure carry the rest — which is why the framing design matters more than the board you pick.
Five steps, no mystery, no surprise invoices.
Use the calculator to get your range, then a short call to confirm scope.
Grade, soil, attachment points, and dimensions shape the structural design.
Footings, joist spans, ledger detail, and guardrail loads — documented properly.
Plans submitted and coordinated with your building department.
Contractors bid the same documented scope, so you compare price, not guesswork.
Construction is bid separately by contractors. This is what the drawings cost.
Revisions free until your permit is issued
50% deposit — balance only at plan-check acceptance
"The calculator flagged that my deck needed a permit because of the height. Two contractors had told me I didn't. That one flag saved me from a tear-out."
"Every bid came back within about eight percent of each other because they were all pricing the same drawing set. First time I've ever been able to compare contractors honestly."
"Hillside lot, second-story deck. They engineered it properly and the city approved on the first submission. Worth every dollar of the design fee."
Not a list of features. The specific structural reasons the outcome is different.
| Bidding one documented plan | Getting three contractor bids | |
|---|---|---|
| Bid spread | Typically within about 10% | Commonly 40% apart on the same yard |
| What each one quoted | The same deck, three prices | Three different decks |
| Permit trigger | Flagged before you order material | Often discovered after framing |
| Change orders | Structure decided on paper first | Priced in the field, in your driveway |
| Who is accountable | A drawing set everyone builds to | Whoever answers the phone |
Tell us about your site and we'll come back with an engineered design your contractor can build from — and your city will approve.
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