Home Additions

Second floor. Sunroom. Attached garage with a new master bedroom. Whatever you are thinking of, our Verified Contractors have built it. Connect with an experienced Renovation Advisor and let us bring your vision to life.

Our Addition Projects

Get inspired! Take a look through our completed home addition projects for aspirational ideas and costs to renovate your space.

How it works

Describe Your Project

Answer a few quick questions about your addition plans and an experiencedRenovation Advisor will get back to you.

Get Connected With Verified Contractors

Our Perfect Match tool will find you up to three contractors verified through our exclusive 53-point Verification Process.

Choose Your Best Contractor

Review competing bids and select the best contractor to get started, knowing we are there for you throughout your project.


What Determines the Cost of an Addition?

Many factors affect the cost of a home addition, such as

  • The nature of the project
  • The materials and finishings you choose
  • The number of footings or foundation size

You can find yourself paying anywhere between $60,000 for low-budget projects and $240,000+ for large additions

Why people trust us

the average contractor rating by our clients
weeks to complete a typical home addition
Verified Contractors competing for your project

Your Personal Assistant

A dedicated Renovation Advisors is assigned to your addition project. Your Advisor will be there to schedule appointments, help you understand quotes, provide you with a Verification Report for each contractor, and support you until your renovation is complete.

yves gagnon renovation advisor

“Whether you are investing in space to better accommodate your family or to increase the value of your home, I am here to help.”


Renovation Advisor


Benefit from our no-cost guarantee

The RenoAssistance Guarantee is an additional warranty offered at no charge for any customer undertaking their renovation project with us.*

* Conditions apply. Only available to residents of Quebec at this time.


happy clients trusted us with their projects

No fees. No obligation.

Best Home Addition Contractors


We want your addition to run smoothly, which is why we only work with highly qualified professionals.

At RenoAssistance, all of our contractors are thoroughly vetted through our exclusive 53-point Verification Process.

Our goal is to provide you with a successful renovation from start to finish. We will have up to three contractors bid on your project to ensure you are getting the best value. We will also provide you with a Verification Report for each contractor, so you can relax knowing your project is in good hands.

What a home addition contractor can assist you with

  • Design
  • Demolition
  • Footings or foundation
  • Rough-ins: plumbing and electrical
  • Installing the vanity, cupboards, and other furnishings
  • Finishing touches
Verified Contractor

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Our Home Addition Guide

What you will learn from the guide:

  • The nine steps to a successful home addition
  • The various types of additions
  • Cost influencers
  • And more answers to your questions!

Frequently asked questions

What’s the first step when doing an expansion?

Before going too far down the road with a project like this, it’s important to check how feasible it is. Each municipality has its own regulations and you need to be sure that your project is permitted. Ultimately, the municipal planning office will have to approve the project plans. It’s best to show up in person with your certificate of location and some photos of the property. Learn more about preparing for a home addition project: 9 steps for a successful expansion.

How long does a second storey addition take?

Given the scope of the project, adding a second storey can take a rather long time. You’ll need to start counting the days from the moment you begin putting your ideas together. The plans alone can take, on average, 4 to 6 weeks. Then, it’ll depend on financing the project and getting permits. Afterwards, it’s all about putting everything together and getting the contractors to start working on the project.

What is a rear house addition?

This is a partial extension of the house towards the backyard that typically includes the construction of a solarium or the addition of a family room or dining room. It’s good for several types of housing (bungalows, cottages, single storey homes) and it can be done on piles or on a foundation.

elyse beauchamp renovation advisor

“I am here to help you with your project and to refer you to the best home addition contractors.”


Renovation Advisor