Basement renovation in Cambridge — finished space in a Galt home

Service Area · Cambridge, ON

Basement Renovations in Cambridge

Galt, Preston, Hespeler. Legal basement suites, family basement finishing, and basement bathrooms. Grand River floodplain checked. Ontario Building Code compliance non-negotiable. Permits pulled at 50 Dickson St.

Cambridge Is Three Cities. Each Basement Is Different.

Cambridge was stitched together in 1973 from three separate towns — Galt, Preston, and Hespeler. Fifty years on, the housing stock in each district still reflects its own history, and that shows up in the basement.

Galt— old limestone and brick homes, some dating to the 1850s cotton mill era. Fieldstone foundations, ceilings often 6'0"–6'4", and small existing windows. Downtown Galt sits in a Heritage Conservation District — exterior egress cuts need heritage review. A Galt basement conversion is usually the highest-effort, highest-reward project in the city.

Preston— post-war and 1960s bungalows dominate. Poured concrete foundations, ceilings usually 7'0" or better, and often a bathroom rough-in already stubbed. The easiest place in Cambridge to build a legal suite.

Hespeler— mix of Victorian mill workers' cottages and 1990s+ subdivisions in Hespeler Village. The old part has similar constraints to Galt. The new part is ready-to-finish out of the box.

Cambridge Districts We Serve

  • Galt

    Downtown Galt, West Galt, South Cambridge, Ainslie Wood, Coronation

  • Preston

    Preston Heights, Preston Downtown, Riverside, Franklin Boulevard corridor

  • Hespeler

    Downtown Hespeler, Hespeler Village, Hespeler Waterworks, Guelph Ave

  • East Cambridge

    Silverheights, Blair, Highway 401 corridor, Cambridge West

Grand River Floodplain

If you're near the river in Galt or Preston, the Grand River Conservation Authority regulates the floodplain. A GRCA permit may be needed before the Cambridge building permit. We check first.

Old Homes, Modern Suites

Making a 130-Year-Old Basement Legal

An 1890s Galt millworker's cottage was built with a root cellar, not a bedroom. Turning it into a legal 2026 secondary suite is possible — it just takes more work than a new build. Here's the honest scope:

Ceiling height under 6'5"

Options: lower the slab (adds $15K–$30K, permanent fix), raise bulkheads to expose more joist bay, or reconfigure so low areas become mechanical/storage instead of habitable rooms.

Common in: Galt, Old Hespeler, Preston pre-1950s

Fieldstone or early brick foundation

Interior wall assembly gets a moisture barrier, rigid foam against the stone, then framing pulled off the foundation with a small air gap. Waterproofing may need attention before finishing.

Common in: Downtown Galt, Downtown Hespeler

Existing windows too small for egress

Cut new egress window through poured or stone foundation. In heritage districts, requires heritage permit and specific window styling. Cost: $3,500–$6,500 per window.

Common in: All older Cambridge districts

Single-panel electrical service

Older Cambridge homes often have 60A or 100A service — legal secondary suite needs 200A minimum plus a sub-panel for the unit. Utility upgrade adds $2K–$4K.

Common in: Homes pre-1965 across all districts

Cambridge Basement Renovation Cost (2026)

Same ranges as the rest of Waterloo Region, but Cambridge's older housing stock pushes older-home projects toward the top of each range.

Basic Finish

$35K–$55K

Rec room, framing, drywall, LVP, pot lights. Easiest in newer Hespeler and East Cambridge builds.

Family Finish + Bath

$55K–$80K

Above plus 3-piece bathroom + one bedroom with egress. Common Preston bungalow scope.

Legal Cambridge Suite

$85K–$140K

Full kitchen, private entrance, permits. Galt/old Hespeler builds trend to the top; newer suburbs stay lower.

Beyond Basements

Bathrooms & Kitchens in Cambridge

Basements are the biggest thing we do in Cambridge, but plenty of Galt, Preston, and Hespeler homeowners add a bathroom or kitchen renovation to the same project. Same crew, same schedule.

Bathroom Renovations in Cambridge

Galt century homes have tiny original bathrooms — often 30 sq ft rooms carved from bedrooms in the 1890s. Most Galt bathroom renos involve knocking out an adjacent closet or wall to expand the footprint enough for a proper walk-in shower or double vanity. Preston 1950s–60s bungalows have small U-shape bathrooms with original pastel tile — typical gut-and-rebuild to porcelain and glass. Hespeler Village 2000+ builds usually just need cosmetic refreshes.

Pricing: $5K–$10K refresh in under a week. $15K–$35K+ full gut in 1–3 weeks. Older-home renovations trend to the top of the range because of plumbing rerouting and old lath-and-plaster repair.

Full Bathroom Renovations page →

Kitchens & House Renovations in Cambridge

Preston 1950s–60s bungalow kitchens are the most common Cambridge kitchen reno — tight galleys separated from small dining rooms by a load-bearing wall. Typical scope: engineered LVL beam across the opening, island where the wall was, quartz counters. Galt heritage kitchens need more careful heritage-appropriate cabinet styling. Hespeler Village and East Cambridge subdivisions are standard suburban kitchen updates.

Flooring, painting, drywall, framing, and general contracting across all three Cambridge districts too.

Full House Renovations page →

How It Works

Our Simple 5-Step Process

No guessing games. We keep you informed at every stage - from the first conversation to the final walkthrough.

1

Free Consultation

We start with a no-pressure conversation about your project goals, timeline, and budget. You can reach us by phone, email, or our contact form.

2

Site Visit & Assessment

We visit your home to take measurements, assess existing conditions, and understand the full scope of your project. No surprises later.

3

Detailed Estimate

You receive a clear, written estimate outlining exactly what's included, what materials will be used, and what the total cost will be. No vague ballpark figures.

4

Planning & Scheduling

Once you approve the estimate, we finalize the project plan, coordinate any permit requirements, order materials, and set a start date that works for you.

5

Build & Final Walkthrough

Our team gets to work. We keep you updated throughout the project and finish with a walkthrough to make sure everything meets your expectations before we call it done.

FAQs

Cambridge Basement Renovation FAQs

Common questions from Cambridge homeowners in Galt, Preston, and Hespeler.

How much does a basement renovation cost in Cambridge?
Basic finish in Cambridge: $35K–$55K. Full finish with bathroom + bedroom: $55K–$80K. Legal secondary suite with permits pulled at Cambridge City Hall: $80K–$130K. Older Galt and Hespeler homes with stone foundations, low ceilings, and heritage constraints trend to the top of the range. Newer Hespeler Village and East Cambridge builds sit at the lower end.
Do I need a permit for a basement renovation in Cambridge?
Yes, for framing, plumbing changes, adding a bathroom or bedroom, cutting an egress window, or creating a secondary suite. Building permits are pulled through the City of Cambridge Building Division at 50 Dickson St. Legal secondary suite permit fees run $600–$1,200. We handle the application, drawings, and inspections.
Is my Cambridge property in the Grand River floodplain?
Parts of Galt (both sides of the Grand River between Water Street and Concession Street), and low-lying sections of Preston along the Speed River, sit inside Grand River Conservation Authority (GRCA) regulated floodplains. If your property is inside the regulated area, you need a GRCA permit before a Cambridge building permit can be issued. We check this on the first site visit — no surprises during permit review.
Can I add a legal basement apartment in Galt or Hespeler?
Yes, in most residential zones. Cambridge permits secondary suites as-of-right in most R zones, subject to parking and lot coverage requirements. The trickier part in Galt and old Hespeler is the housing stock — many homes date to 1870s–1920s. Fieldstone or early brick foundations, ceilings often under 6'5", and small existing windows. Slab lowering or careful ceiling reconfiguration is usually needed to meet Ontario Building Code minimums.
What Cambridge neighbourhoods do you work in?
Galt (Downtown, West Galt, South Cambridge, Ainslie Wood), Preston (Preston Heights, Preston Downtown, Riverside), Hespeler (Downtown Hespeler, Hespeler Village, Hespeler Waterworks), East Cambridge/Highway 401 corridor, and everything along Coronation, Franklin, and Hespeler Road. We're 20 minutes from any Cambridge address.

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