THE SHORT ANSWER
Compare relevant completed work, current documentation, a defined written estimate, professional and permit responsibilities, communication arrangements and a clear change process. Ask each contractor the same questions so the comparison is based on the same project.
Look for relevant project evidence
A bathroom portfolio can help you assess finish details, while an addition needs evidence of a different construction scope. Ask about projects with similar rooms, building conditions and complexity. A broad experience claim should not replace a discussion of your actual work.
Review real photographs and any available client references. A finished picture shows visible workmanship, but it cannot confirm everything behind the walls. Ask how the underlying construction and inspection requirements were addressed.
Make the written estimate understandable
A useful estimate identifies materials, quantities, allowances and exclusions. It should distinguish supplied items, professional services, approvals, disposal and finish restoration. If a category is vague, ask for clarification before comparing the total.
Discuss payment stages and what each stage represents. Keep the agreement and any accepted changes together. The contract should describe the project responsibilities without relying on assumptions made during the first conversation.
Check the people and documentation for the scope
Ask for current insurance and relevant trade or professional documentation. The requirements depend on the work; renovations and new-home construction can raise different questions. For a new-home arrangement, use HCRA and Tarion resources to verify the applicable responsibilities.
Identify your main contact and the person coordinating trades and site decisions. Agree on how updates and concerns will be handled. Clear roles can matter as much as the number of people involved.
Understand what happens when the plan changes
An older building can reveal unexpected conditions, and a homeowner may request an upgrade during construction. Ask how the cost and timing will be reviewed and approved. A written change process protects both parties from uncertain expectations.
Discuss the final walkthrough and outstanding-item procedure. Ask for the actual workmanship and material terms in the agreement rather than assuming a generic warranty. Choose the proposal you understand and the team whose approach fits the project.
Official resources
Use the responsible authority’s current guidance for your address and scope. Requirements and applications can change; professional project advice should address your specific property.
City of Hamilton contractor licensing & permit guidance ↗HCRA Ontario Builder Directory ↗Tarion new-home warranty information ↗