How to hire a deck contractor
The questions to ask, the red flags to avoid, what your contract must include, and how to verify a license in your state. DeckMath is brand- and vendor-neutral — we don't sell your info or connect you with anyone. This is just the homework, done.
How do I hire a good deck contractor?
- Bids
- Get 3+
- Must verify
- License + insurance
- Deposit
- Keep it small
Should you DIY or hire a pro?
Ground-level rectangular decks are common DIY projects. Elevated, multi-level, or structurally complex decks usually warrant a professional. Decide with real numbers, then either build your own bill of materials or arm yourself to compare contractor bids.
10 questions to ask before you sign
- 1Are you licensed and insured? Can I see proof of both (liability + workers' comp)?
- 2Will you pull the building permit, or am I responsible?
- 3Can you provide an itemized written bid (materials + labor separately)?
- 4What's the payment schedule? (Avoid large upfront deposits.)
- 5Can I see 3 recent local references and finished decks?
- 6Who actually does the work — your crew or subcontractors?
- 7What's the projected start and completion timeline?
- 8What warranty do you offer on labor (separate from the material warranty)?
- 9How do you handle change orders and unexpected issues (rot, utilities)?
- 10Is cleanup and haul-away included?
Red flags — walk away
- No license or won't show insurance — walk away.
- Cash-only, or demands a large deposit (>30%) before any work.
- No written contract, or a vague one-line quote.
- Wants to skip the permit ‘to save money’ — it's the homeowner who pays later.
- Door-to-door or high-pressure ‘today only’ pricing.
- No local references or a physical business address.
What your contract must include
- Full scope of work + materials (brand, size, color).
- Itemized price, payment schedule tied to milestones.
- Start + completion dates, and who pulls the permit.
- Labor warranty terms + manufacturer warranty registration.
- Lien waivers, insurance certificates, and license number.
- Change-order process in writing.
Verify the license + check reputation
Most states license residential contractors through an official board. Look up your state’s board, then search the contractor’s name or license number. Cross-check reputation independently.
Directory of every state's contractor licensing agency.
Check complaint history, ratings, and accreditation.
Find certified remodeling professionals near you.
These are independent third-party resources, listed for your convenience. DeckMath is not affiliated with them, receives no referral fee, and does not collect or sell your information.
People also ask
Hiring a deck contractor questions, answered.
No. DeckMath is a free, neutral calculator and planning site — we don't sell leads, take referral fees, or run a contractor marketplace. This page points you to independent, authoritative resources so you can find and vet a pro yourself.
Most US states license residential contractors through a state board. Use the lookup above to find your state's official board, then search the contractor's name or license number. Also check the BBB for complaint history.
It depends on the deck's height, complexity, and your skill. Ground-level rectangular decks are common DIY projects; elevated, multi-level, or structurally complex decks usually warrant a pro. Use our DIY vs Contractor calculator to compare the real cost and effort.
Get at least three written, itemized bids for the same scope. Build your own material list and budget first (use the planner) so you can compare bids on equal footing and spot padding.
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