Free online estimate in 60 seconds · Licensed & insured · Financing available Cambridge · Kitchener · Waterloo · Guelph · Paris
Basement specialists · Grand River region

Turn your basement into a legal income suite.

From legal basement apartments to dry, finished living space — we design and build basements that add real value and rental income to your Cambridge-area home.

Licensed & insured
15+ years local
Built to code
Add a hero photo hereA finished basement apartment, or a before/after. Real local project photos build the most trust.
★★★★★
120+ homeowners
$1,800/mo
avg. income from a legal suite
Fully licensed & WSIB insured
Free, no-pressure estimates
Flexible financing
Local & family-run
What we do

Everything below grade — done right in Cambridge & the Grand River region.

From a full legal suite to a few upgrades, we focus on basements, so you get specialists, not a generalist learning on your home.

Legal Basement Apartments

Code-compliant secondary suites with their own entrance, kitchen and egress — built to the standard a legal rental suite requires.

Most popular →

Basement Bathrooms

Adding a full or half bath below grade — including the rough-in, pump and waterproofing details most contractors skip.

Renovations & Additions

A full finish or just a few upgrades — rec rooms, home offices, a new wall, flooring or a kitchenette. Tell us what you have in mind.

Waterproofing & Foundation

Interior and exterior waterproofing, sump systems and crack repair — so your investment stays dry for the long haul.

Why a legal suite

A basement apartment can pay for itself.

Ontario now makes it easier than ever to add a legal second unit to your home. Done properly, a basement suite turns unused square footage into monthly income and lasting resale value.

  • Built to current Ontario second-unit standards
  • Proper egress windows, fire separation & soundproofing
  • Separate entrance and metering options
~$22K
potential rental income per year

+15%
typical lift in resale value
Calculate your basement's value
Free tool

Basement Cost & Income Calculator

The #1 thing homeowners want to know: what will it cost, and what could it earn? Get an instant ballpark — no email required to see it.

Tell us about your basement

Adjust the options for an instant estimate.

Project type
Legal apartment
Full renovation
A few upgrades
Bathroom
Waterproofing
Basement size
800 sq ft
Finish level
Basic
Standard
Premium
Your city (for rent estimate)
Cambridge
Kitchener
Waterloo
Guelph
Paris
Estimated project cost
$45,000 – $58,000
Ballpark for the Grand River area. Final price depends on layout, finishes & site conditions.
$1,800/mo
est. rental income
~2.4 yrs
to pay back
Get my exact quote →

Estimates are illustrative — set the numbers in app.js to the client's real pricing.

Simple process

From first click to finished suite.

1

Online estimate

Answer a few quick questions and get an instant ballpark range — no phone tag, no pressure.

2

Book a call-back

Pick a time and we'll call to confirm the details and give you an accurate, no-obligation estimate.

3

We build

One trusted crew handles framing to finishing, with tidy job sites and clear weekly updates.

4

Move in / rent out

Finished and inspected — enjoy your new space or start collecting rent.

Where we work

Proudly serving Cambridge & the Grand River region.

Basement apartments, bathrooms, renovations and waterproofing across the Grand River region.

Our work

See the transformation.

Drag the slider to reveal the before & after. Swap these placeholders for the client's real project photos.

AFTER · finished legal suite
BEFORE · bare basement
BeforeAfter

Cambridge legal suite

An unfinished basement turned into a one-bedroom apartment with its own entrance — now renting at $1,750/month. Replace this caption and the panels with the client's actual project.

Project photoRec room · Waterloo
Project photoBasement bath · Guelph
Project photoWaterproofing · Kitchener
Project photoIn-law suite · Paris
Project photoEgress window · Cambridge
Project photoKitchenette · Kitchener
Homeowners say

Reviews that build trust.

Samples for now — real Google reviews plug in here and boost local ranking.

★★★★★

"They turned our damp, unused basement into a legal apartment that now covers half our mortgage."

Sarah M. · Cambridge
★★★★★

"Clean, on schedule, and they explained the code requirements instead of cutting corners."

David & Priya · Waterloo
★★★★★

"Fixed our water issues and finished the whole basement. Two years later, still bone dry."

Marc L. · Guelph
Free estimate

Get your ballpark in 60 seconds.

Answer a few quick questions. You'll see an instant price range, then you can book a quick call-back for an accurate quote.

Instant ballpark price, on the spot
No obligation, no pushy sales calls
Pick your own call-back time
Step 1 of 4
What are you looking to do?
Legal basement apartment A rentable, permitted suite
Full basement renovation Finish the whole space
A few upgrades / additions A wall, flooring, kitchenette, etc.
Basement bathroom Add a full or half bath
Waterproofing Stop leaks & moisture
Not sure yet Help me figure it out
Step 2 of 4
Where is the home, and what's the basement like now?
Cambridge
Kitchener
Waterloo
Guelph
Paris
Other nearby
Current state
Unfinished / bare
Partially finished
Finished, needs updating
Step 3 of 4
Timeline & budget?
When would you like to start?
As soon as possible
1–3 months
3–6 months
Just researching
Rough budget
Under $25k
$25k–$45k
$45k–$75k
$75k+ / not sure
Step 4 of 4
Where should we send your estimate?

Here's your ballpark estimate

Your project
$45,000 – $85,000
This is a ballpark only. Every basement is different — book a quick call-back below and we'll give you an accurate, no-obligation estimate.
Free call-back

Pick a time for your call

Synced with Grand River Basements's calendar — only open times are shown
Month

Call-back booked!

Questions

Frequently asked.

We build basements to current Ontario code. Architectural drawings and permit applications are arranged separately by the homeowner — we're glad to point you to a designer we trust.

Most legal basement apartments range from about $45,000 to $85,000 depending on size, layout and finishes. Use our free calculator above for an instant ballpark.

Cambridge, Kitchener, Waterloo, Guelph, Paris and the surrounding Grand River region.

Yes — flexible financing options are available so you can spread the cost of your project over time.

Get my free estimate