Basement Renovations in Cambridge.
A basement is the cheapest square footage you will ever add to a Cambridge home — you already own it. Finishing it properly can add a family room, a legal suite, a home office or a rental income stream without touching your footprint.
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Built for Cambridge homes.
A basement is the cheapest square footage you will ever add to a Cambridge home — you already own it. Finishing it properly can add a family room, a legal suite, a home office or a rental income stream without touching your footprint.
The difference between a basement that feels like a basement and one that feels like part of the house comes down to unglamorous things: moisture management, insulation, ceiling height strategy, lighting design and egress done to code.
Basement work in Cambridge homes
Galt's older stone foundations can be characterful and damp in equal measure. We would rather solve the water properly before framing over it than be called back to open up a finished wall a year later.
Typical investment: $35,000 – $80,000+ · Typical timeline: 5 – 9 weeks. In Cambridge the variables are headroom, moisture and what can be re-routed. All three get measured on the first visit, because all three move the price.
A complete basement project, managed end to end.
Moisture & Insulation
Proper vapour control, framing and insulation so the space stays dry and warm.
Layout & Egress
Family rooms, bedrooms, in-law suites and legal egress windows to code.
Basement Bathrooms
Full bathroom additions including rough-in and drainage solutions.
Lighting Design
Layered pot lights and fixtures that beat the low-ceiling gloom.
Flooring & Finishes
Luxury vinyl, engineered floors, trim and doors built for below-grade conditions.
Permits & Inspections
Coordinated end-to-end, including secondary-suite requirements where applicable.
Basement projects across Cambridge.
We work throughout Galt, Preston and Hespeler and understand how differently each of them is built.
Four steps, zero guesswork.
Free Consultation
We visit your Cambridge home, measure up and talk through your goals and budget.
Design & Quote
A clear, itemized proposal with finishes and a realistic timeline.
Build & Update
One accountable team on site with regular progress updates.
Walkthrough
We review every detail together and don't finish until you're thrilled.
Your questions, answered.
Finished basements in Cambridge generally run $35,000 to $80,000+ depending on square footage, whether you're adding a bathroom or kitchenette, and whether it's a legal secondary suite. In Cambridge the variables are headroom, moisture and what can be re-routed. All three get measured on the first visit, because all three move the price. A free consultation gets you an itemized number.
Yes. Legal secondary suites have specific requirements around ceiling height, egress windows, fire separation and separate entrances. We assess feasibility during the consultation and handle the permit process with the City of Cambridge Building Division.
We address water before finishes — grading, sealing and vapour management as needed. For height, we plan mechanical runs carefully and use lighting and trim strategies that make the ceiling read higher than it measures.
We hired this company for both our basement renovation and fencing work, and I honestly couldn’t be happier with the results. From start to finish, the experience was seamless. The team was professional, knowledgeable, and incredibly easy to work with. They paid close attention to every detail, kept us informed throughout the process, and delivered exactly what they promised—on time and with outstanding craftsmanship.
The basement turned out even better than we imagined, and the fencing work completely transformed our outdoor space. It’s clear they take pride in their work and truly care about customer satisfaction. Finding a contractor you can trust is not easy, but this company exceeded our expectations in every way.
Highly recommend them to anyone looking for high-quality work, reliability, and excellent service. We would absolutely hire them again without hesitation!
Other services we offer in Cambridge.
Ready to start your Cambridge basement project?
Tell us about your project and we'll respond within one business day to book your free in-home consultation.
- 519-501-6616Mon–Fri, 8am–6pm
- info@optimalrenovation.comWe reply within 1 business day
- Serving Waterloo RegionKitchener · Waterloo · Cambridge · Guelph
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Let's build something exceptional.
Tell us about your project and we'll get back within one business day with next steps and a free consultation.