Are electronic signatures legally binding?

Yes. Electronic signatures are enforceable in interstate transactions under the ESIGN Act (15 U.S.C. ch. 96) and under UETA in most states, provided intent, consent, attribution, and record retention requirements are met.

When is notarization necessary?

Notarization is rarely required for standard construction contracts but may be needed for related instruments like mortgages or certain lien releases; check local recording requirements before omitting notarization.

Can I use remote online notarization?

Many states permit RON under state law, but rules differ; confirm state notary guidance and retention obligations before using RON for documents tied to recording or statutory filings.

How do I amend the contract after signing?

Use written change orders signed by authorized representatives; include effective dates and pricing adjustments. Avoid oral modifications to prevent enforceability disputes.

What if a signer lacks authority?

If a signatory lacks authority, the contract may be voidable. Require corporate resolutions or certificates of authority when organizations sign to verify signing authority.

How long should executed contracts be kept?

Retain contracts for the active term plus a minimum of three years; follow IRS rules (IRC §6501(a)), HIPAA when relevant (45 CFR §164.530(j)), and longer state-specific periods when applicable.

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Construction Contract Cost Plus or Fixed Fee

Construction Contract Cost Plus or Fixed Fee

This template is fully customizable. Edit the text, fill out the fields, and send it for signature. Give it a try!

What the Construction Contract Cost Plus or Fixed Fee Is

A Construction Contract Cost Plus or Fixed Fee is a written agreement that allocates project costs and contractor compensation in one of two ways: a cost-plus arrangement reimburses allowable costs plus a fee or percentage, while a fixed-fee contract sets a predetermined total price for specified work. The form defines parties, scope, payment terms, allowable cost categories, change order handling, dispute resolution, and the effective dates that govern obligations during construction and closeout.

Why this Contract Form Matters for Owners and Contractors

This contract clarifies how labor, materials, overhead, and profit are calculated and paid, reducing disputes over reimbursable items and timing. Clear billing and audit provisions protect owners; defined fee structure and scope protect contractors from scope creep.

Who Typically Prepares and Signs These Construction Contracts

Signatory roles and authority should be recorded in the signature block; an authorized corporate officer or authorized agent must sign to bind an organization.

Project Owners and Developers: Use the form to limit reimbursable cost categories and require audit rights to control cost risk.
General Contractors: Define fee structure and change order pricing to avoid losses from unforeseen site conditions.
Subcontractors and Suppliers: Attach scopes and pricing exhibits to establish responsibility for performance and invoicing.

Essential Parts of a Professional Construction Contract Cost Plus or Fixed Fee

A complete contract covers scope, pricing method, payment schedule, allowable costs, change orders, audits, and termination — each item drafted to allocate project risk and administrative responsibility clearly.

Scope

Clear, measurable description of work, plans, and specifications; include exhibits for drawings, schedules, and milestones to avoid scope disputes.

Pricing

Identifies cost-plus basis or fixed-fee total; when cost-plus, specify fee type (fixed fee, percentage, or guaranteed maximum) and allowed cost categories.

Payment Terms

Progress payment schedule, retainage percentage, invoicing requirements, supporting documentation, and payment timing to govern cashflow.

Change Orders

Procedure for authorizing scope changes, pricing methodology for extras or credits, and time extension mechanics to manage variations.

Audits & Records

Owner audit rights, record retention requirements, access to receipts and payroll, and remedies for disputed costs.

Termination & Remedies

Termination for convenience and default, cure periods, disputed payment resolution, and limitations on consequential damages.

Required Information and Standard Clauses to Include

Party Names: Legal entity names

Scope Dates: Start and completion dates

Fee Formula: Fixed sum or percentage

Cost Categories: Direct, indirect, overhead

Insurance: Coverage types and limits

Dispute Resolution: Arbitration or litigation

Step-by-Step: How to Fill Out This Construction Contract

Follow these steps in order to produce a complete, enforceable contract that minimizes ambiguity and speeds approval.

01

Gather Documents: Collect drawings, specs, and pricing exhibits.
02

Choose Pricing: Decide cost-plus or fixed-fee option.
03

Set Payment Terms: Define milestones, retainage, and backup.
04

Sign and Distribute: Obtain authorized signatures and send executed copies.

How to Customize and Complete the Contract Online

Configure fields, signature order, and authentication before sending. Use templates to maintain consistency across projects.

Field	Configuration
Signature Order	Define sequential or parallel signing by role or email
Authentication	Choose email, SMS code, or stronger verification
Conditional Fields	Show or hide cost fields based on pricing selection
Document Versioning	Lock final exhibits to prevent post-signing edits

Digital Signing, Authentication, and Delivery Options

Verify the platform complies with ESIGN/UETA, supports record retention, and integrates with your document management or project platforms.

Signature Methods: Supports typed, drawn, or uploaded signatures with audit trail
Authenticator Options: Email, SMS code, or advanced signer verification
File Formats: Accepts PDF and DOCX formats for exhibits

Key Dates, Deadlines, and Payment Timing to Track

Track effective date, milestone dates, invoice cutoffs, retainage release, and warranty start and end dates to avoid disputes and missed obligations.

Effective Date:

Start of contractual obligations and warranties.

Milestone Payments:

Dates tied to completion benchmarks for progress payments.

Invoice Submission:

Specify invoice due date after receipt to trigger payment timing.

Retainage Release:

Date or condition for releasing retained funds.

Warranty Period:

Begin date and duration for contractor warranties.

Common Preparation Errors to Avoid

Vague scope descriptions that allow differing interpretations and lead to scope disputes and change order litigation.
Unclear allowable cost definitions that cause reimbursable expenses to be contested during audits and invoice reviews.
Missing signatory authority where individuals sign without corporate authorization, risking unenforceability or voidable agreements.
No change order workflow documented, which delays approvals and creates claims for extra time and money.

Consequences of an Incorrect or Incomplete Contract

Payment Delays: Invoices rejected

Disputes: Increased claims and litigation

Lien Exposure: Unsecured contractor liens

Audit Findings: Disallowed costs

Termination Risk: Contractor default or owner termination

Regulatory Fines: Statutory penalties possible

eSignature Vendor Pricing and Feature Snapshot for Contract Execution

Compare starting price and common features for eSignature vendors when executing construction contracts; signNow appears first per comparison convention.

	signNow	DocuSign	Adobe Sign	PandaDoc	HelloSign
Starting Price	$8/user/mo	$15/user/mo	$14/user/mo	$19/user/mo	$15/user/mo
Free Trial	7-day free trial	Varies by plan	Varies by plan	Varies by plan	Varies by plan
Bulk Send	Yes (Business Premium)	Yes	Yes	Yes	No
Audit Trail	Yes	Yes	Yes	Yes	Yes
HIPAA Compliant	Yes	Yes	Yes	No	No
Envelope Cap	No cap	100 envelopes/user/yr	Varies	Varies	Varies

Where to Send or File Executed Contracts and Exhibits

After signing, distribute executed originals and maintain copies in contract management and project systems to support payments, audits, and lien defense.

Owner: Send fully executed copy to owner's contract administrator
Contractor: Retain original executed contract for project records
Project Folder: Store scanned executed documents in PM system or cloud
Lender/Escrow: Provide signed copies if contract performance affects financing

Real-World Examples of Contract Use and Execution

The following examples show how organizations executed similar documents to speed approvals while preserving auditability and compliance.

Optica Ventures — COO

Optica used a standardized contract template to streamline subcontract onboarding and ensure consistent payment terms.

The template aligned invoicing and retainage schedules across projects.
By centralizing contract language and signature workflows the company reduced cycle time for subcontract execution and improved clarity for audits and owner reporting.

Martin Properties — Founder

Martin Properties executed site improvement agreements online to avoid schedule delays when owners were remote.

Executed PDFs included audit trails and attachments.
This approach allowed the team to close contracts while on site, maintain consistent documentation, and reduce administrative follow-up for signatures across multiple owners.

Practical Tips for Accurate and Efficient Contract Completion

Use these best practices to reduce disputes, accelerate payments, and keep contract administration predictable across projects.

Standardize Templates and Exhibits

Maintain a single authoritative template with standard exhibits for scope, pricing, and schedules so teams use consistent language and avoid ad hoc deviations that invite disputes.

Define Allowable Costs Clearly

List specific reimbursable categories and excluded items to prevent later audit adjustments and disagreements over equipment, travel, or indirect costs.

Require Supporting Documentation

Specify required backup for invoices such as subcontractor invoices, time sheets, and material receipts to streamline review and reduce payment disputes.

Preserve Executed Records

Store signed contracts and versioned exhibits in a secure repository with access controls and audit logs to support claims, audits, and lien defense.

FAQs: Common Questions About Construction Contract Cost Plus or Fixed Fee

Answers to common questions on enforceability, signatures, notarization, change orders, and contract amendments for U.S. projects.

Need help? Contact support

Are electronic signatures legally binding?
Yes. Electronic signatures are enforceable in interstate transactions under the ESIGN Act (15 U.S.C. ch. 96) and under UETA in most states, provided intent, consent, attribution, and record retention requirements are met.
When is notarization necessary?
Notarization is rarely required for standard construction contracts but may be needed for related instruments like mortgages or certain lien releases; check local recording requirements before omitting notarization.
Can I use remote online notarization?
Many states permit RON under state law, but rules differ; confirm state notary guidance and retention obligations before using RON for documents tied to recording or statutory filings.
How do I amend the contract after signing?
Use written change orders signed by authorized representatives; include effective dates and pricing adjustments. Avoid oral modifications to prevent enforceability disputes.
What if a signer lacks authority?
If a signatory lacks authority, the contract may be voidable. Require corporate resolutions or certificates of authority when organizations sign to verify signing authority.
How long should executed contracts be kept?
Retain contracts for the active term plus a minimum of three years; follow IRS rules (IRC §6501(a)), HIPAA when relevant (45 CFR §164.530(j)), and longer state-specific periods when applicable.

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