How to Bid a Deck Job: Framing, Decking, Railings and Permits

To bid a deck job, price it in components: footings and framing by square footage and height, decking by material, railings by linear foot, stairs by step count, plus demolition, permits, hardware and any extras like lighting or built-in benches. Composite decks cost more than pressure-treated wood, and height, access and railing length often matter as much as square footage.

Step 1: Measure and sketch

Record length, width, height above grade, the attachment to the house (ledger or freestanding), stair location and railing runs. Note soil, slope and access for materials. A simple plan sketch goes with the bid and, in many places, the permit application.

Step 2: Price the structure

• Footings: count and depth per local frost line and code.
• Posts, beams and joists: sized to span and load; higher decks need bracing.
• Ledger and flashing: done right, it prevents the most common deck failures.
• Hardware: joist hangers, lateral load connectors and fasteners add up quickly.

Step 3: Price the decking

Price per square foot by material: pressure-treated, cedar, composite or PVC. Include waste, hidden fasteners if used, picture framing and fascia boards. See deck building cost per square foot.

Step 4: Railings and stairs

Railings are priced per linear foot by style (wood, composite, aluminum, cable or glass) and can be a large share of the total. Stairs are priced per step or per run, with landings and stair railings extra.

Step 5: Demolition, permits and extras

• Removal and disposal of an old deck
• Permit fees, drawings and inspection time
• Lighting, built-in benches, privacy screens, skirting
• Staining or sealing for wood decks. See deck staining cost.

Step 6: Present options

Offer the same deck in pressure-treated and composite, with and without upgraded railings. Explain lifetime value, not just the upfront price.

Speed up the first quote

Photos of the yard, the back of the house and any existing deck tell you height, access and attachment before you visit. Fast Snap Pro turns customer photos into an itemized range from your deck price book, so you can qualify the lead the same day and bring the right plan to the site visit. See how to qualify leads before an estimate visit.

Example: a 12 × 16 ft composite deck bid

Line item	How it's priced	Example
Footings (6)	Per footing	$900
Framing and ledger with flashing (192 sq ft)	Sq ft × framing rate	$3,400
Composite decking incl. waste and fascia	Sq ft × material + labor	$6,500
Composite railing (36 linear ft)	Linear ft × rate	$2,900
Stairs (4 steps with rail)	Per step / flat	$1,200
Permit and drawings	Local fee + time	$450
Total		$15,350

Illustrative numbers only. Use your own rates, production times and local costs.

The same deck in pressure-treated lumber with wood railings makes a natural lower-cost option on the same proposal.

Frequently asked questions

How do you estimate the cost of building a deck?

Add structure (footings, framing, hardware), decking by square foot, railings by linear foot, stairs, permits and demolition, then apply overhead and profit.

Do all decks need a permit?

Many jurisdictions require permits for attached decks and decks above a certain height or size. Check local rules and include permit costs in the bid.

Should deck bids include a deposit?

Most deck builders take a deposit to order materials. See contractor payment schedules and deposits.