Basement Renovations in Richmond Hill

York Region

Basement Planning in Richmond Hill

Mill Pond, the town's older historic core, sits alongside more established areas like Bayview Hill and newer construction around Jefferson, giving Richmond Hill a genuinely wide range of renovation starting points.

What Richmond Hill Says About Second Units

Every municipality writes its own rulebook for basement apartments, and Richmond Hill is no exception. It is not exciting reading, but it is far cheaper than finding out the hard way. Here is what the City of Richmond Hill published on its own page when Reno Rise reviewed it (September 2026).

• By-law 143-24 (December 11, 2024) allows up to three additional residential units on a property, for a maximum of four dwelling units, where the property is connected to municipal water and sewage.
• Building permit drawings must be prepared by a qualified professional such as an architect or engineer.
• A separate Electrical Safety Authority permit is required, because the Electrical Safety Code adds requirements for additional units.
• Pre-approved detached unit designs are available to speed up processing.

Read the source before you plan: City of Richmond Hill: additional or second unit information. Rules, fees and program deadlines change, so confirm with the municipality. Richmond Hill is outside the City of Toronto, so Toronto Building’s rules do not apply; the legal secondary suite guide explains the general considerations.

Whatever the age of the house, the plan starts the same way: measure the ceiling height, look for signs of moisture, and decide whether you want a finished basement or a self-contained suite. Get those answers early and the rest of the project gets calmer. See basement renovation planning, underpinning, waterproofing and egress windows for the most common issues.