Adding square footage to a Richmond Hill house, whether that means pushing out the back for a bigger kitchen and family room or building up with a full second storey, is one of the biggest projects a homeowner takes on. It touches structural work, foundations, roofing, electrical and mechanical systems, and usually a trip through the Town of Richmond Hill's building permit process. Done well, it can turn a cramped bungalow into a home that fits a growing family without the cost and disruption of moving. Done poorly, it can mean a mismatched roofline, drafty rooms, or a foundation that wasn't ready to carry a new floor.
We've profiled 6 contractors in this category who take on additions and second-storey builds locally. Before hiring, ask each one about their experience with similar-scale projects, who pulls the permits and engineering drawings, how they handle unexpected issues once walls are opened up, and what their payment schedule looks like tied to project milestones. A contractor who walks you through structural and design decisions in plain language, rather than glossing over them, is usually one worth keeping.
Our scores weigh things like verified licensing and insurance, how consistently a company delivers on schedule and budget, the pattern of feedback across real jobs, and responsiveness when problems come up mid-project. See exactly how we calculate this on our methodology page, and check the ranked guide to Richmond Hill renovation contractors for how these businesses compare against the wider field of local renovators.
