Do I need a written contract for home renovation?

Yes, always — and in most states it's legally required for home improvement work over $500. A verbal agreement is legally binding in theory but nearly impossible to enforce in practice. Always get everything in writing before any work or money changes hands.

What is a change order and should it be in the contract?

A change order is a written amendment to the original contract documenting any change in scope, cost, or timeline. Your contract should require that all changes be documented as signed change orders before additional work begins. Verbal change order agreements are a leading cause of construction disputes.

What warranties should a contractor include in the contract?

At minimum, your contract should specify a 1-year workmanship warranty and call out manufacturer warranties for all major products installed. Some states mandate minimum warranty periods — California requires a 10-year warranty on structural defects under the Right to Repair Act (SB 800).

What happens if the contractor abandons the project?

Your contract should include an abandonment clause that defines what constitutes abandonment (e.g., no work performed for 10+ consecutive business days without notice) and specifies the homeowner's remedies including retaining replacement costs from contract funds and pursuing the contractor's bond.

What Every Home Renovation Contract Must Include (2026 Checklist)

April 25, 2026

Why Most Problems Start With the Contract

Construction disputes almost always trace back to a vague or incomplete contract. When terms aren't clear in writing, both sides fill in gaps with their own assumptions — and those assumptions inevitably conflict. A detailed contract forces alignment before work begins and gives both parties a clear reference when questions arise during the project.

Essential Parties, Dates, and Description

Every contract must open with unambiguous identification of the parties and scope:

Full legal names of homeowner(s) and contractor (not just a DBA name)
Contractor's license number and state of issuance
Property address where work will be performed
Project description — specific enough that a stranger could understand the scope
Contract execution date and project start date
Substantial completion deadline

Scope of Work (Exhibit A)

Attach a detailed scope of work as a named exhibit. It should itemize every task, material category, and finish specification. Use language like "install 3×6 white subway tile in a running bond pattern throughout the shower enclosure to ceiling height" rather than "tile the shower." Vague scope language is the primary cause of scope disputes. Include a list of what is explicitly excluded from the contractor's scope.

Payment Schedule (Exhibit B)

The payment schedule should be a milestone-based table listing:

Each payment trigger (specific, verifiable milestone)
Dollar amount or percentage of contract value
Requirement for conditional lien waivers at each draw
Final payment holdback (retainage) amount and release conditions

Never agree to a contract that allows the contractor to demand draws on a calendar schedule rather than milestone schedule. Calendar-based draws provide no accountability for progress.

Change Order Clause

This is non-negotiable: every change to scope, price, or timeline must be documented in a written change order signed by both parties before the additional work begins. The clause should specify:

How the contractor prices change order work (hourly rate, markup percentage, or fixed quote)
How the timeline is adjusted for owner-initiated changes
That verbal authorizations are not binding

Permit Responsibilities

Clearly state who is responsible for pulling permits, paying permit fees, and scheduling inspections. In all cases, the permit should be in the contractor's license number — a contractor who asks you to pull permits to save money is asking you to assume legal liability that's properly theirs.

Insurance and License Verification

List specific insurance requirements in the contract:

General liability: minimum $1M per occurrence / $2M aggregate (request a certificate of insurance naming you as additional insured)
Workers' compensation: required for any contractor with employees
Contractor's license number and expiration date

Warranty Terms

Specify a minimum workmanship warranty period (1–2 years is standard) and require the contractor to pass through all manufacturer warranties on materials and systems installed. Require the contractor to register warranties in your name at project completion.

Dispute Resolution Clause

Include a dispute resolution hierarchy: (1) direct negotiation in writing, (2) non-binding mediation within 30 days of notice, (3) arbitration or litigation. Specify the governing state law and jurisdiction. If the contractor's form contract includes a mandatory arbitration clause, understand that you're waiving your right to a jury trial — this is negotiable.

Use our city contractor directory to find licensed professionals who use transparent, complete contracts — a red flag is any contractor who resists putting terms in writing.

Frequently Asked Questions

Do I need a written contract for home renovation?: Yes, always — and in most states it's legally required for home improvement work over $500. A verbal agreement is legally binding in theory but nearly impossible to enforce in practice. Always get everything in writing before any work or money changes hands.
What is a change order and should it be in the contract?: A change order is a written amendment to the original contract documenting any change in scope, cost, or timeline. Your contract should require that all changes be documented as signed change orders before additional work begins. Verbal change order agreements are a leading cause of construction disputes.
What warranties should a contractor include in the contract?: At minimum, your contract should specify a 1-year workmanship warranty and call out manufacturer warranties for all major products installed. Some states mandate minimum warranty periods — California requires a 10-year warranty on structural defects under the Right to Repair Act (SB 800).
What happens if the contractor abandons the project?: Your contract should include an abandonment clause that defines what constitutes abandonment (e.g., no work performed for 10+ consecutive business days without notice) and specifies the homeowner's remedies including retaining replacement costs from contract funds and pursuing the contractor's bond.