Call Now+1 (416) 402 - 5031
Mike's KDM Renovation and Construction Inc. logo
Menu
About UsProjects+1 (416) 402 - 5031

Legal Basement Renovation in Brampton

Convert your unfinished basement to a rental unit with our city-licensed renovation team in Brampton. We build in stages, with the work ready for each city inspection.

4.9 from 60+ Google reviews

  • Written scopebefore work starts
  • Licensed& insured
  • Permits & inspectionscoordinated
  • Serving Brampton& the GTA

MikeOwner, KDM

Step 1 of 2

Book your free legal basement consultation

Start with where we can reach you. Two quick questions come next.

No obligation. We only use your details to follow up.

All projects
  • Basement plumbing rough-ins after KDM's corrective work
  • Upgraded electrical panel in the basement with the surrounding wall open
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Barn door and piano styled stairs in basement, door remodel main floor in Brampton (after)
  • Bathroom in Brampton (after)

Plan a legal basement apartment in Brampton

As of January 1, 2026, every Brampton landlord renting one to four units needs a Residential Rental Licence.

The city is inspecting, too. Its licensing pilot led to more than 4,700 inspections and over 600 penalty notices, according to CBC News.

An unregistered basement unit puts your licence and rental income at risk. Building to the legal requirements from the start is simpler than reopening finished work later.

Already finished? See what legalizing takes
“A lot of people in Brampton used to rent out basements that were never made legal and get away with it. That isn't the case anymore.”
MikeOwner, KDM

What to check before hiring a Brampton basement contractor

With strong demand for basement units, many crews offer to build them. Brampton residents have reported rushed work, poor workmanship and missing approvals.

Global News: Brampton residents frustrated by basement unit work
  • No permit, or “we will get it later”Without a permit, the work cannot be inspected. Without inspections, the unit cannot be registered.
  • No drawings before work startsThe city must approve the drawings for a legal unit. Starting the framing without those drawings leaves the build to guesswork.
  • Walls closed before the inspectionsPlumbing, framing and fire separation must be inspected before drywall goes up. Otherwise, the drywall has to be removed again.
  • A one-line quoteA price without a detailed scope can leave you paying for extras later. Ask for a written breakdown of the work.
  • Nobody owns the inspectionsConfirm who will book the inspections and meet the inspector on site. Leaving those responsibilities to you can delay the project.

Before work begins, your KDM quote sets out the work, permits and inspection stages.

Mike wearing a yellow hard hat in the basement with the ceiling framing exposed

Finishing a basement legalization another contractor left behind

A homeowner hired another contractor to legalize their basement, but the contractor left before completing the work.

When we took over, we found a missing clean-out. The basement could not pass its plumbing inspection without one, so we had to remove a section of the finished flooring to install it.

We also removed all the drywall to install a vapour barrier throughout, corrected the plumbing rough-ins and upgraded the electrical panel.

Finished surfaces do not mean a basement is ready to pass inspection. We plan each stage so the inspector can see the work that needs approval.

Basement plumbing rough-ins before KDM's corrective work
Before: existing plumbing rough-ins
Basement plumbing rough-ins after KDM's corrective work
After: corrected plumbing rough-ins
Upgraded electrical panel in the basement with the surrounding wall open
Upgraded electrical panel

Our team takes Brampton basements from unfinished space to licensed rental units

Use the free homeowner checklist to track decisions, hiring, submissions, costs and follow-up as you turn your basement into a legal rental unit.

Get the free checklist
Brampton portal record showing completed construction starts and passed water service and underground plumbing inspections

Construction & plumbing

Construction starts marked complete, with water service and underground plumbing marked Pass.

Brampton portal record showing passed fire separation, insulation and vapour barrier, interior finishes and building occupancy inspections

Fire separation & occupancy

Fire separation, insulation and vapour barrier, interior finishes and building occupancy marked Pass.

Brampton portal record showing passed final plumbing and HVAC inspections dated September 16, 2026

Final plumbing & HVAC

Final plumbing, HVAC completion, HVAC occupancy and final HVAC inspections marked Pass.

Screenshots from a completed project in the Brampton Building and Business Portal.

Legal basement renovation costs in Brampton

A complete legal basement renovation from unfinished starts around $60,000. We quote after visiting the basement because entrance type, bedroom count and electrical service have the largest effect on the cost.

  • 1Entrance typeAn above-grade side door involves much less work than an excavated basement walkout.
  • 2Bedrooms and windowsAllow for an egress window in each bedroom. Cutting a larger foundation opening increases the cost.
  • 3Kitchen, bathroom and laundryThe distance between new fixtures and existing drains affects the plumbing cost.
  • 4Electrical serviceMost legal basement units need the home's electrical service upgraded to 200 amps.

Financing your legal basement

You do not have to pay for the whole unit up front. Ask us about home renovation financing to spread the cost into monthly payments.

Written scope

Typical line items

Drawings, permit and registration
Quoted after site visit
Framing, insulation and fire separation
Quoted after site visit
Plumbing rough-in for kitchen, bathroom and laundry
Quoted after site visit
Furnace-room sprinklers and alarms
Quoted after site visit
Electrical service upgrade to 200 amps
Quoted after site visit
Separate entrance above grade
About $2,000 to $3,000
Walkout entrance below gradeCosts more than above grade
Quoted after site visit
Egress windows, per bedroom
Quoted after site visit
Kitchen, bathroom and flooring finishes
Quoted after site visit

Complete renovation from unfinished: from about $60,000. Legalizing a finished basement usually starts around $40,000 and can cost less when more requirements are already met. Your written quote breaks down the work and costs before construction begins.

How we build your legal basement apartment

One team coordinates the work from the initial check through to the rental licence, keeping each stage ready for inspection.

  1. 1

    Viability check

    We assess the ceiling height, entrance options, side yard and electrical panel to see whether the basement can become a legal unit.

  2. 2

    Written scope and quote

    Your written scope breaks down the work, permit requirements and inspections line by line.

  3. 3

    Drawings and permit

    We submit the drawings and permit application to the City of Brampton before construction begins.

  4. 4

    Build and rough-ins

    We sequence the entrance, windows, framing, plumbing, HVAC and electrical work around the required inspections.

  5. 5

    Inspections

    Before installing drywall, we arrange inspections of the plumbing, HVAC, framing, fire separation and insulation.

  6. 6

    Finishes and registration

    After the finishes and final inspections, the unit is registered. You can then apply for your rental licence.

Legal basement renovation requirements in Brampton

These parts of the build determine whether the unit passes inspection. We plan them before starting the framing.

1

A separate entrance, or shared access

For a side or rear entrance, you need a clear 1.2 metre path on your property. Access through a garage or shared interior vestibule is also permitted.

An above-grade entrance usually costs about $2,000 to $3,000. A walkout that needs excavation below ground level costs more.

Walkouts and separate entrances
2

Egress windows in the bedrooms

Each bedroom needs a window with a clear opening of at least 0.35 square metres and no side smaller than 380 mm, unless that level has an exterior door.

Basement egress windows
3

Fire separation between the units

Fire separation requirements apply to the ceiling between units, beneath the stairs and around the furnace room. The furnace room usually also needs sprinklers.

4

Electrical panel upgrade (usually 100A to 200A)

Another kitchen, laundry area and heating load increase electrical demand. The legal basement projects we have worked on have needed a 200 amp service upgrade.

5

Plumbing and venting that pass inspection

Inspectors check underground plumbing before the floor is closed. The drain line needs a clean-out, and vent pipes must be the correct size and type. In most locations, the city requires 6-inch hard pipe.

6

Size and registration

The basement apartment must be smaller than the main dwelling. After passing inspection, it is registered with the city as an Additional Residential Unit.

Answers before you call

Read the guidance for your project, then find answers to the questions that come up before work starts.

Brampton basement inspections: what happens at each stage

The city checks a legal basement at several stages, following its mandatory inspection schedule. Book through Brampton's Building and Business Portal at least five business days ahead, with someone on site between 8am and 4pm. The city's inspection booking guidance also explains recall fees: since July 21, 2025, an ARU inspection that fails twice incurs a fee. Electrical work is inspected separately by the Electrical Safety Authority.

When is underground basement plumbing inspected?

The inspector checks drains beneath the slab before they are covered with concrete.

Can I close the walls before the rough-in inspection?

Once plumbing and HVAC rough-ins are installed, they are inspected before the walls are closed.

When are framing and fire separation inspected?

After the rough-ins pass, the city inspects structural framing. Fire separation is usually checked during the same visit.

Does insulation need an inspection before drywall?

This check follows approval of the framing and takes place before drywall installation.

Are the final building, plumbing and HVAC inspections booked together?

Book the final building, plumbing and HVAC inspections together for the same day.

Registering and licensing your completed basement apartment

Passing the final inspections leads to registration as an Additional Residential Unit, which you can check on the city's registered units map. Registration and a rental licence are separate steps. Since January 1, 2026, the licensing requirement applies across every Brampton ward.

How is my basement apartment registered after inspection?

After inspections pass, the city registers the apartment as an Additional Residential Unit and adds it to the registered units map.

Do I need a rental licence once the unit is built?

Yes, if you rent the unit. Since January 1, 2026, a Residential Rental Licence is required for rental properties with one to four units throughout Brampton.

What paperwork should I keep for my legal basement?

Store the permit, inspection records and registration together. Insurers, lenders and future buyers may ask to see them.

What homeowners say about Mike's basement work

Based on 60+ Google reviews

4.9

  • Working with KDM has been a complete pleasure. The entire team was friendly, prompt, efficient, and thorough. They under promised and over delivered. I got a beautiful basement that I am completely happy with in a timeframe that was barely an inconvenience. They cleaned before, during, and after so it was easy to move into the space.

    Melissa JansenGTA

    Basement remodeling

  • I hired Mike to renovate my basement, and I could not be happier with the results. The work was absolutely phenomenal, every detail was executed with care, professionalism, and top notch craftsmanship.

    Sahil GosaliaGTA

    Basement remodeling

  • They are professional, detail oriented and just an amazing bunch of people to work with. Mike is very energetic and always willing to help you out in every possible way. The work quality is great and the timing is the best part, he finished my basement side entrance work before he promised.

    Sagar JaniGTA

    Basement side entrance

Questions about building a legal basement in Brampton

Answers to the questions homeowners ask before construction.

Does a legal basement unit need its own separate entrance?

Not always. Brampton permits a side or rear entrance with a clear 1.2 metre path. Access through the garage or a shared interior vestibule is also allowed.

Does the basement unit have to be smaller than the main house?

Yes. The second unit must be smaller than the principal dwelling.

Do I need to upgrade my electrical panel?

Most likely. Another kitchen, laundry area and heat source increase the electrical load. Our legal basement projects have needed a 200 amp service upgrade. An electrical load calculation confirms what your home needs.

Can I finish the basement now and legalize it later?

Yes, but a simply finished basement often lacks several legal-unit requirements. Legalization usually starts around $40,000, compared with around $60,000 for a complete legal renovation from unfinished. It can cost less when more requirements are already met, though that is unusual in our experience. If you may rent it later, plan to the second-unit requirements now to avoid removing and replacing work such as drywall and insulation.

Do you handle the drawings, permit and inspections?

We coordinate drawings, the permit application and inspections as part of the project. You do not have to chase individual trades or the city yourself.

Plan your legal basement renovation with Mike's team

At your consultation, we check the entrance options, electrical panel and layout. You then receive a written scope with an itemized breakdown.

  • Written, itemized scope
  • Permits and inspections coordinated
  • Brampton and GTA homeowners