A written contract is the single most important document in any renovation project. It defines the scope, cost, timeline, quality standards, and legal protections that govern the relationship between you and your contractor. Without a comprehensive contract, you have no recourse when problems arise.
A written contract is the single most important document in any renovation project. It defines the scope, cost, timeline, quality standards, and legal protections that govern the relationship between you and your contractor. Without a comprehensive contract, you have no recourse when problems arise. Ottawa homeowners who skip the contract or accept a minimal one-page agreement are taking an enormous risk. Even with a trusted contractor recommended by friends, a detailed contract protects both parties by preventing misunderstandings, documenting expectations, and providing a framework for handling changes and disputes. Use this checklist to evaluate any renovation contract before signing. If items are missing, ask the contractor to add them. A professional contractor will welcome thorough contract terms because they protect the contractor as well.
Party information: Full legal names of homeowner(s) and contractor, business name and registration number, addresses, phone numbers, and email addresses. Verify the business name matches the Ontario business registry. Scope of work: Detailed description of all work to be performed, room by room or area by area. Include what's being demolished, constructed, installed, and finished. The more specific, the better — 'install kitchen cabinets' vs 'install 22 linear feet of shaker-style maple cabinets by [manufacturer], white finish, soft-close hinges, in the layout shown in Drawing A.' Material specifications: Brand names, model numbers, colours, grades, and quantities for all major materials. Include allowances for items not yet selected, with clear notation of what the allowance covers. Project cost: Total contract price with itemized breakdown by category. Include all taxes (HST). Identify any allowances and what they cover. Payment schedule: Specific payment amounts tied to completed milestones (not dates). Include deposit amount, progress payment triggers, substantial completion payment, and final holdback amount and release conditions. Project timeline: Start date, phase durations, and expected completion date. Include provisions for delays caused by weather, material availability, or homeowner decision delays.
Insurance requirements: Contractor must maintain general liability insurance ($2M minimum) and WSIB coverage throughout the project. Include a provision requiring the contractor to provide updated certificates if coverage is renewed during the project. Permit responsibilities: Who obtains and pays for all required permits (building, electrical, plumbing, HVAC). Who is responsible for scheduling and attending inspections. Change order process: Written change orders signed by both parties before additional work begins. Each change order must include description of the change, cost impact, timeline impact, and signatures of both parties. Warranty terms: Minimum 1-year workmanship warranty (2–5 years preferred). Separate material warranty coverage. Process for submitting and resolving warranty claims. Response time commitment for warranty work. Dispute resolution: Step 1: Written notice and direct negotiation. Step 2: Mediation through an agreed-upon mediator or service. Step 3: Arbitration or litigation as a last resort. Specifying mediation before litigation saves both parties time and money. Termination clause: Conditions under which either party can terminate the contract. How completed work and materials will be valued. How deposits and progress payments will be handled upon termination.
Site access and working hours: Hours when work will occur (Ottawa standard: 7 AM–6 PM weekdays). Weekend work policies. How the contractor will access the property (keys, lockbox, homeowner presence). Property protection: How existing finishes, furniture, and landscaping will be protected during construction. Dust control measures. Protection of completed work during ongoing construction. Cleanup and waste removal: Daily cleanup expectations. Waste disposal responsibilities and costs. Final cleaning at project completion. Subcontractor management: Disclosure of subcontractors who will work on the project. Confirmation that subcontractors are insured and licensed where required. Homeowner right to approve or reject subcontractors. Communication protocol: Primary point of contact. Expected response time for communications. Frequency and format of progress updates. Decision-making process and timelines. Construction lien protection: Ontario's Construction Act provides mechanisms to protect against liens filed by unpaid subcontractors. Your contract should address how lien holdbacks are managed and confirm the contractor's responsibility to pay subcontractors.
Review the entire contract carefully. Don't rush — take 2–3 days to review before signing. Have a second person (spouse, family member, or lawyer) review it as well. Verify all details match your discussions. The contract should reflect everything you agreed upon verbally. If something was discussed but isn't in the contract, it doesn't exist. Check for blank spaces. Every field should be completed. Blank spaces can be filled in later without your knowledge. Ensure both parties sign every page. Initial each page and sign the final page. Each party should receive a complete signed copy. Keep the contract accessible throughout the project. You'll reference it during construction when questions arise about scope, materials, or timeline. For projects over $50,000, consider having a construction lawyer review the contract ($300–$800). This investment can prevent disputes worth tens of thousands of dollars. Remember: a good contract protects both you and the contractor. It's not adversarial — it's collaborative. The process of creating a thorough contract ensures both parties have aligned expectations before work begins.
Yes. Even for projects under $10,000, a written contract protects both parties. For small projects, a simpler 1–2 page agreement covering scope, cost, timeline, and warranty is sufficient. Never rely on a verbal agreement.
Templates are a good starting point but should be customized for your specific project. The Canadian Construction Association and offer templates. Always add project-specific details for scope, materials, and timeline.
Negotiate. Most terms are standard industry practice that professional contractors accept. If a contractor refuses reasonable protections (insurance verification, warranty, change order process), consider it a red flag.
For projects over $50,000, yes. A construction lawyer ($300–$800 for a review) can identify risks and suggest improvements. For smaller projects, use this checklist to verify essential elements yourself.
If it's not in writing, it doesn't exist. Before signing, verify that every verbal agreement is documented in the contract. Add items as addendums if they were discussed after the initial contract was drafted.