Markham, Ontario

Multi-Unit Conversion in Markham

Whether your Markham project is a modest refresh or the full version of multi-unit conversion, the process is simple: describe it, add photos, get a free quote.

Below is what this kind of project involves around Markham, and an honest look at what moves the price โ€” no invented flat rates.

Multi-Unit Conversion in Markham: what to expect

In and around Markham, housing runs from wartime and mid-century stock to new subdivisions and towers, so the same renovation can be scoped quite differently depending on the age and type of the home.

That local context matters for multi-unit conversion: Unionville and Markham Village are designated heritage conservation districts where exterior renovations need heritage approval.

About Markham homes

Markham pairs some of the GTA's best-preserved heritage streetscapes โ€” Unionville's Main Street and Markham Village โ€” with successive rings of suburban growth from the 1970s through the new urbanist streets of Cornell and the towers of Markham Centre. That range means renovation work runs from sensitive updates inside century homes to reworking 1980s and 1990s two-storeys whose layouts no longer match how families live.

Multigenerational households are common here, and projects reflect it: in-law suites, secondary units, and main-floor bedrooms with accessible bathrooms. Condo owners in Markham Centre plan around board approvals and building rules. Whichever kind of home you have, describe the renovation you're weighing and we'll connect you with a free, no-obligation quote.

  • Unionville and Markham Village are designated heritage conservation districts where exterior renovations need heritage approval.
  • Large tracts of 1980s and 1990s housing are reaching the age for full kitchen, bathroom and basement renovations.
  • Secondary suites are permitted in Markham subject to zoning and Ontario Building Code requirements.

What affects your Markham multi-unit conversion cost

No two Markham homes are the same, so instead of a flat price, here's what actually shapes a multi-unit conversion quote:

  • Unit count and layout efficiency โ€” stacking kitchens and bathrooms trims plumbing runs substantially
  • Electrical service capacity, since three or four units almost always require a service upgrade
  • The era of the home โ€” Markham has a wide mix, and a 1950s bungalow and a 2010s build can need very different work behind the same renovation.
  • Egress complexity: shared exits carry their own fire-rating requirements versus fully independent entrances
  • Whether each unit gets separate heating and metering or shared systems with allocation
  • Municipal review depth โ€” parking, servicing and registration rules differ noticeably between cities

For the full breakdown of what multi-unit conversion involves, see our Multi-Unit Conversion guide โ€” then request a free Markham quote for your actual job.

Common questions

Do you actually take projects in my part of Markham?
Requests come in from right across Markham, not just the busiest neighbourhoods. Put your postal code in the quote form and we'll confirm coverage right away.
What happens after I submit my Markham request?
We review the details and photos, ask a question or two if something's unclear, and come back with a scoped quote. You decide from there โ€” no obligation, no follow-up pressure.
Will I need a permit in Markham?
It depends on the scope โ€” cosmetic updates usually don't, while structural changes, additions and new plumbing or wiring runs typically do. Markham's building department has the local rules, and the permit path is part of any quote we give, not a surprise partway through.
Can tenants stay in one unit while the others are converted?
Sometimes, with careful phasing โ€” for instance keeping the main-floor unit occupied while the basement and attic are built out. It depends on where the noisy structural work, service shutdowns and shared-access disruption fall. Ontario tenancy rules govern notice and habitability during work, so we build the construction schedule around those obligations from the start.
What approvals does a multi-unit conversion need?
A building permit based on drawings from a qualified designer, structural engineering where load paths change, electrical work under ESA notification, plumbing inspections, and Fire Code compliance verified at final inspection. Most municipalities then require registration or licensing of the units. We manage the sequence end to end, because approvals stalling in the wrong order is the most common source of delay.

Get your Markham quote

Tell us what you're planning โ€” one room or the whole home โ€” and get a free quote.