AI Bid Proposal Generator

Win More Jobs With a Professional Contractor Bid Proposal

Enter your project details and get a complete, ready-to-send bid proposal with cost breakdown, timeline, and acceptance block — in seconds.

Free to generate
PDF download included
No account required
Signature-ready format

Bid Proposal Details

Fill in the fields below. The more detail you provide, the stronger your proposal.

Your Company
Client / Project
Bid Details
Payment Terms
Progress Billing
Milestone
Lump Sum
Bond & Insurance
Drafting your bid proposal…
AI is writing a professional proposal tailored to your project
Analyzing project scope & type
Building cost breakdown by division
Writing project timeline & milestones
Drafting terms & exclusions

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✓ Proposal Ready Review before sending
BID PROPOSAL
Construction Services Proposal & Agreement
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PROPOSAL #001
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Valid for 30 days
Submitted To
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Job Site Address
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Project Name
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Project Type
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Proposed Start Date
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Estimated Duration
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Total Bid Amount
—
All-in, including overhead & profit
Payment Terms
—
—
Bid Validity
30 days
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1. Project Description

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2. Scope of Work

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3. Cost Breakdown
Division Description Amount
4. Project Timeline
5. Exclusions

The following work is NOT included in this proposal:

    6. Terms & Conditions
    7. Insurance & Bonding

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    8. Acceptance

    By signing below, the Client accepts this proposal and authorizes the Contractor to proceed with the work as described. This document, once signed by both parties, constitutes a binding agreement.

    Contractor
    Authorized Signature
    Print Name & Title
    Date
    Client / Owner
    Authorized Signature
    Print Name & Title
    Date
    Generated by BuildStackHub AI Bid Proposal Generator · buildstackhub.com/tools/bid-proposal-generator
    This document is for informational purposes only. Review all terms with a licensed attorney before execution. AI-generated content may require adjustment for your jurisdiction. Not legal advice.

    Get the Full Proposal Package

    Upgrade to unlock the complete contractor proposal toolkit — line-item breakdown, alternates pricing, risk assessment, warranty terms, payment schedule, and dispute resolution clause.

    Detailed line-item breakdown Alternates / options pricing Value engineering suggestions Risk assessment section Milestone payment schedule Warranty & dispute terms
    $49 / proposal

    Need to create another bid?

    Just need a blank template?

    Download blank bid proposal template (PDF) →

    Why Contractors Use a Professional Bid Proposal

    A polished proposal builds trust, prevents scope disputes, and wins jobs over lower bids. Here's what's in every BuildStackHub proposal.

    Itemized Cost Breakdown

    Labor, materials, equipment, overhead, and profit listed separately — so clients see exactly where their money goes and trust your numbers.

    Project Timeline

    Key milestones give clients confidence you have a real plan — not just a number. Clear phases reduce "when will it be done?" calls.

    Terms & Exclusions

    A detailed exclusions list prevents "I thought that was included" disputes. Clear terms protect you if the client adds scope mid-project.

    Signature-Ready

    Includes client acceptance block so the proposal can become a binding agreement the moment the client signs — no separate contract needed for smaller jobs.

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    Bid Proposal FAQs

    What should a contractor bid proposal include?

    A professional contractor bid proposal should include: your company information (name, license, contact), the client's name and project address, a detailed project description, scope of work (inclusions and exclusions), an itemized cost breakdown (labor, materials, equipment, overhead, profit), a project timeline with key milestones, payment terms, bond and insurance information, a bid validity period, and signature blocks for acceptance.

    How is a bid proposal different from a contract?

    A bid proposal is an offer — it becomes a contract only when the client signs the acceptance block and both parties agree to the terms. Until signed, it's a non-binding document. Once the client countersigns your bid proposal, it typically serves as the binding agreement for smaller residential jobs. For commercial projects, a formal contract (AIA A101, or your own subcontract) is typically executed after the proposal is accepted.

    How long should a contractor keep bid proposals valid?

    Most contractors specify a 15–30 day bid validity period for residential projects and 30–60 days for commercial work. Material prices and labor costs fluctuate, especially in volatile markets, so keeping bids open too long exposes you to margin risk. Always include a bid validity clause — it protects you from being held to a price after costs have risen.

    Should I include overhead and profit separately in my bid?

    Yes — listing overhead and profit separately in your cost breakdown demonstrates transparency and professionalism. Typical overhead runs 10–20% of direct costs (general conditions, insurance, admin), while profit runs 5–15% depending on project type and market. Showing the breakdown builds client trust and makes negotiation easier if they question specific line items.

    What payment terms should I put in a contractor proposal?

    The three most common payment structures are: (1) Progress billing — billed monthly based on percentage of work completed, common on larger commercial projects; (2) Milestone payments — paid at defined project milestones (foundation, framing, rough-in, completion), good for residential work; (3) Lump sum — single payment at completion, only appropriate for very small jobs. Always require a deposit of 10–30% upfront to cover mobilization costs before starting any work.

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