How Many Deck Contractor Quotes Should You Get?

The Federal Trade Commission recommends obtaining multiple written estimates for home-improvement projects. Consumer guidance from the Ohio Attorney General goes further and recommends receiving at least three written estimates from three different contractors.

When Are Three Deck Quotes Enough?

Compare Your Estimate With Local Deck Contractor Quotes

A national cost range is useful for establishing a budget, but it cannot account for your local labor market, site access, permit requirements, material availability or exact project scope.

Once you know the approximate deck size, material, railing, stairs and construction scope, use that information to request local proposals for the same project.

Affiliate disclosure: The Backyard Standard may earn a commission if you submit a service request through this link.

The Goal Is Not Three Prices — It Is Three Comparable Proposals

Imagine three contractors quote your deck:

• Contractor A includes the deck but excludes demolition and permits.
• Contractor B includes demolition, permits, stairs, railing, and cleanup.
• Contractor C uses a different decking collection and railing system.

Those are not three prices for the same project.

They are three different projects.

This is why BYS recommends normalizing the scope before deciding which contractor is actually more or less expensive.

The Backyard Standard Deck Quote Method

Use this five-step process instead of simply lining up the totals from lowest to highest.

1. Define the deck. Give each contractor the same basic project requirements.
2. Get written estimates. Avoid relying on verbal ballpark numbers.
3. Normalize the scope. Identify what each contractor included, excluded, or assumed.
4. Vet the contractor. Verify qualifications, insurance, references, and applicable local requirements.
5. Compare the complete offer. Evaluate price only after you understand what the price buys.

Step 1: Give Every Contractor the Same Project Brief

Contractors need some flexibility to recommend better construction methods or products, but the basic project should be consistent enough to compare.

Before requesting quotes, write down:

• Approximate deck dimensions
• Deck height
• Attached or freestanding configuration
• Existing deck demolition, if applicable
• Whether an existing structure is being repaired, resurfaced, or fully replaced
• Preferred decking material or specific collection
• Railing material or general railing expectation
• Approximate stair location and number of stair runs
• Known site-access limitations
• Desired features such as picture framing or lighting
• Any known permit, HOA, or design constraints

You do not need to engineer the deck yourself.

The purpose is simply to prevent one contractor from pricing a basic pressure-treated deck while another prices a premium composite project with aluminum railing.

If you are still deciding how much of an existing deck to keep, resolve that first with Deck Repair vs. Replace.

Step 2: Get Written Estimates, Not Just a Total Price

The FTC advises homeowners to obtain written estimates that describe the work, materials, expected completion timing, and price.

For a deck project, BYS would want enough detail to identify at least the following:

Step 3: Normalize the Quotes Before Comparing Prices

This is where most of the real comparison happens.

Create a simple table and mark each major item as:

• Included
• Excluded
• Allowance
• Unclear

Then ask each contractor to clarify the unclear items.

Use the Deck Quote Scope Checklist to identify what each proposal needs to define before you treat the prices as comparable.

Watch Closely for Allowances

An allowance is not necessarily a red flag.

It simply means part of the project price is based on an assumed amount rather than a final selection.

For example:

Decking allowance: $X per square foot

can produce a very different final cost depending on which board you eventually choose.

Common deck allowances can involve:

• Decking
• Railing
• Lighting
• Permit fees
• Engineering
• Unexpected site work

Step 4: Vet the Contractor Before You Rank the Quote

A detailed proposal does not replace contractor due diligence.

The FTC and state consumer-protection agencies recommend checking contractor qualifications before signing.

Depending on your jurisdiction, verify:

• Business identity and contact information
• Required contractor registration or licensing
• Proof of applicable insurance
• Bonding where required or represented
• References
• Complaint history
• Who will actually perform the work

Permits and Inspections Should Be Explicit

Deck permit requirements vary by jurisdiction and project.

Before signing, determine:

• Whether a permit is required
• Who will apply for it
• Who pays permit fees
• Who schedules required inspections
• Whether engineering or drawings are included if required

Consumer guidance from the Ohio Attorney General recommends checking with local officials about required permits and having the contract identify responsibility for permits and inspections.

Use our Deck Permit Checklist to prepare before construction.

For the budget side of permitting, see the Deck Permit Cost Guide.

How Much Structural Detail Should a Deck Quote Include?

You should not expect every initial estimate to function as a complete set of construction drawings.

But before signing a construction contract, important structural assumptions should not remain mysterious.

Depending on the stage of design and local permit process, ask about:

• General footing/foundation approach
• Post and beam configuration
• Joist size and spacing
• Ledger attachment for an attached deck
• Flashing approach
• Stair construction
• Guard and railing system
• Whether engineering is required

If competing proposals use unfamiliar structural terms, use the Deck Framing Hub. For guard and railing-system decisions, use the Deck Railing Hub.

When Could One or Two Quotes Be Enough?

Three remains the stronger default, but there are situations where you may decide you already have enough information.

Examples include:

• You have a well-established relationship with a contractor whose work and pricing you already understand
• The project is small and tightly defined
• You have two exceptionally detailed and comparable proposals from contractors you have independently vetted
• Qualified contractors are unusually difficult to obtain for the project

The question is not whether you reached an arbitrary number.

It is whether you have enough reliable information to understand the proposed work, evaluate the contractor, and judge the price in context.

When Should You Get a Fourth Deck Quote?

A fourth quote is useful when the first three create more questions than answers.

Consider another proposal when:

• Prices are dramatically different even after scope is normalized
• Contractors disagree about a major structural or site issue
• One or more proposals are too vague to evaluate
• You are uncomfortable with the qualifications of the contractors you interviewed
• The project involves unusual engineering or site conditions
• None of the proposals meets your project requirements

What If One Deck Quote Is Much Lower Than the Others?

A low quote is not automatically bad.

But both the FTC and consumer-protection agencies advise homeowners not to automatically choose the lowest estimate.

If one proposal is substantially lower, compare:

• Deck dimensions
• Decking collection
• Railing system
• Demolition
• Permit fees and permit management
• Engineering
• Stairs
• Lighting or accessories
• Cleanup and disposal
• Workmanship warranty
• Allowances
• Explicit exclusions

Then ask the contractor directly:

“Your proposal is substantially lower than the others. Can you walk me through what is included and explain where you believe the cost difference comes from?”

A clear answer may validate the lower price—or expose an important difference.

What If One Deck Quote Is Much Higher?

Use the same process.

A higher quote may reflect:

• More expensive decking or railing
• More complete scope
• Different structural assumptions
• More site work
• Permit or engineering costs
• Different warranty terms
• Different labor or project-management model
• Different business overhead or scheduling conditions

Or it may simply be expensive.

You cannot know until the proposal is normalized against the others.

Should You Choose the Middle Deck Quote?

No automatic rule says the middle quote is best.

Sometimes the middle-priced proposal offers the best overall value. Other times the lowest proposal is complete and excellent, or the highest proposal includes upgrades you genuinely want.

Choosing the middle bid simply because it feels safer is not a substitute for evaluating the proposals.

The Quote Is Not the Final Contract

Once you choose a contractor, make sure the important promises from the quote and your discussions actually appear in the written agreement.

The FTC recommends reading the contract carefully and ensuring important promises are documented.

Consumer guidance from the Ohio Attorney General similarly recommends a written contract covering the work, materials, timeframe, total cost, payment terms, warranties, change approvals, permits, and inspections.

Before Signing, Look for:

• Complete project description
• Specified materials or clearly defined allowances
• Total contract amount
• Payment schedule
• Expected project timing
• Change-order procedure
• Permit and inspection responsibility
• Warranty terms
• Important exclusions
• Any promises that influenced your decision

Compare Payment Terms Too

Two contractors quoting the same total price can still present very different financial risk.

Review:

• Deposit amount
• When progress payments are due
• What construction milestones trigger payments
• When final payment is due
• Accepted payment methods
• How change orders are priced and approved

The FTC advises homeowners not to pay the full project price upfront. State rules may also regulate deposits or home-improvement contracts.

Deck Contractor Comparison Worksheet

Instead of assigning arbitrary percentages to contractor qualities, compare each contractor using the same categories and document what you actually know.

Deck Quote Red Flags Worth Investigating

A single issue does not always prove a contractor is unreliable, but these deserve clarification before you sign:

• Only a verbal price with no meaningful written scope
• Pressure to sign immediately
• Major project components left undefined
• Reluctance to discuss permits or inspections
• Required credentials cannot be verified where applicable
• Insurance cannot be documented
• Large unexplained price differences
• Large upfront payment demands
• Verbal promises that do not appear in the contract
• Unclear material allowances
• No clear process for changes to the work

For a deeper screening process, see Deck Contractor Red Flags .

Questions to Ask When Two Deck Quotes Don’t Match

Instead of asking each contractor to simply “beat” the other price, ask what caused the difference.

1. What exact decking and railing products are included?
2. Are demolition and disposal included?
3. Who handles permits and inspections?
4. Are permit or engineering fees included?
5. What assumptions did you make about footings and framing?
6. Are stairs fully included?
7. Which items are allowances rather than fixed selections?
8. What could reasonably increase the final price?
9. What is specifically excluded?
10. What workmanship warranty do you provide?

See our Questions to Ask a Deck Contractor for the full contractor interview.

Are You Ready to Choose a Deck Contractor?

Before signing, you should be able to answer these questions without guessing.

• ☐ I know exactly what major work is included.
• ☐ I know what is excluded.
• ☐ I know which decking and railing products are being priced.
• ☐ I understand the allowances.
• ☐ Permit responsibility is clear.
• ☐ Inspection responsibility is clear.
• ☐ The payment schedule is documented.
• ☐ Important warranty terms are documented.
• ☐ Required credentials have been checked.
• ☐ Insurance has been verified where appropriate.
• ☐ References or prior work have been evaluated.
• ☐ I understand why this proposal differs materially from the others.

Compare Your Deck Quotes Side by Side

Once you have written proposals and have clarified the major scope differences, use the Deck Quote Comparison Tool to organize price, scope, materials, warranties, exclusions, structural details, and contractor qualifications.

If the proposals are too vague to compare, use the Deck Quote Scope Checklist first.

Compare Deck Quotes →

Verify Basic Deck Dimensions Yourself

Bosch Blaze GLM165-40 Laser Measure

A laser measure can be useful for checking basic deck dimensions, estimating project area, and confirming that you and the contractors are discussing roughly the same footprint.

It is a planning and verification tool—not a substitute for the contractor’s final field measurements or construction layout.

View Current Pricing →

Frequently Asked Questions

How many deck quotes should I get?

Three written estimates from qualified contractors is a strong default for most residential deck projects. Consumer guidance from the Ohio Attorney General specifically recommends at least three written estimates for home-improvement work.

Is two deck quotes enough?

Sometimes, especially when both proposals are detailed, comparable, and from contractors you have thoroughly vetted. A third estimate can still help reveal whether either price or scope is unusual.

Should I get more than three contractor quotes?

Get another quote when the existing proposals leave an important question unresolved—for example, dramatically different prices, conflicting approaches, vague scopes, or unusual site conditions.

Should I choose the cheapest deck contractor?

Not automatically. The FTC advises consumers not to automatically choose the lowest bidder. First determine whether the proposals include comparable work, materials, warranties, permits, and other project requirements.

Should I choose the middle quote?

Not automatically. There is no rule that the middle bid represents the best value. Compare the actual scope, contractor qualifications, materials, warranty, payment terms, and price.

What should a deck quote include?

A useful written quote should identify the work, important materials, price, major inclusions and exclusions, and expected timing. Before signing the final contract, permit responsibility, payment terms, warranties, changes, and other important promises should also be documented.

Why are my deck quotes so different?

Differences may come from materials, railing, stairs, demolition, framing assumptions, site conditions, permits, engineering, allowances, warranties, labor costs, business overhead, or simply different pricing. Normalize the scope before deciding which explanation applies.

Can I use one contractor’s quote to negotiate with another?

You can ask a contractor to explain pricing differences, but comparing scope is more useful than simply asking someone to beat another contractor’s number. A cheaper revised bid is not necessarily better if important scope disappears.

Related Deck Contractor Resources

Start with the Deck Planning Hub for budgeting, permits, project preparation, and construction decisions.

Before comparing prices, use the Deck Quote Scope Checklist to make sure each proposal defines the major work.

Then use the Deck Quote Comparison Tool to compare the written bids side by side.

Prepare for contractor interviews with Questions to Ask a Deck Contractor .

Screen potential builders using Deck Contractor Red Flags .

And clarify permitting responsibilities with the Deck Permit Checklist .

Sources & Consumer Guidance

Last reviewed: August 2026

• Federal Trade Commission — How to Avoid a Home Improvement Scam
• Ohio Attorney General — Home Improvement Consumer Tips

What to Do After You Have Three Deck Quotes

Do not immediately choose the lowest bid. First use the Deck Quote Scope Checklist to resolve missing scope, then run the clarified proposals through the Deck Quote Comparison Tool.

Before signing, review Questions to Ask a Deck Contractor and Deck Contractor Red Flags.

The Backyard Standard Final Answer

For most deck projects, start with at least three written contractor quotes.

But do not choose a contractor simply because one bid is lowest, highest, or in the middle.

The better process is:

1. Define the same basic project for every contractor.
2. Get detailed written estimates.
3. Normalize inclusions, exclusions, materials, and allowances.
4. Verify contractor qualifications and applicable requirements.
5. Clarify unexplained price differences.
6. Compare the complete proposal.