Basements, Additions & Outdoor · Cambridge
Home Additions in Cambridge
Rear, side and second-storey additions, sunrooms and garage conversions that add space without moving.
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Home Additions in Cambridge
In Cambridge, an addition is often the answer for families who love their street in Galt and Preston but have outgrown the house. With stone and brick century homes and newer subdivisions, rear additions, second storeys and main-floor suites are all common.
Building permits for additions in Cambridge are issued by the City of Cambridge. We tell you up front whether your project needs one, prepare or coordinate the drawings, and book the inspections so the work is signed off properly.
We plan Cambridge additions from zoning and drawings through foundations, framing, roofing, mechanical tie-ins and finishing, matching the exterior to the existing house so the addition looks like it was always there.
Call (647) 424-1511 or send the form on this page for a free home addition quote in Cambridge. Tell us what you want to change, add a few photos of the space, and we will book a visit and send a written quote that lists the scope, the materials, the permits involved and the schedule.
Cambridge homes
What home additions involves in Cambridge's houses
Century and heritage homes in Cambridge
Adding onto an older Cambridge home means matching brick, siding, rooflines and window proportions so the addition looks original, and tying new framing into old framing that is rarely square. Where the house is designated or in a heritage district, the exterior design needs heritage approval too.
Post-war bungalows and back-splits in Cambridge
Cambridge's post-war bungalows sit on generous lots, which makes them ideal for rear additions or a second storey. Going up needs an engineer to confirm the existing foundation and walls can carry the load, and many bungalows can, with reinforcement where needed.
Newer homes built since 2000 in Cambridge
Newer Cambridge lots are often tighter, so additions tend to be compact: a sunroom, a covered porch or a modest rear extension. We check zoning and any subdivision agreement restrictions before design starts.
Rules in Cambridge
Permits and approvals for home additions in Cambridge
Building permits
Building permits in Cambridge are issued by the City of Cambridge. Electrical work anywhere in Ontario is done by a licensed electrical contractor under an Electrical Safety Authority (ESA) permit. We confirm what your project needs before you sign and book every inspection.
Conservation authority
Much of Cambridge falls within the Grand River Conservation Authority (GRCA) watershed. Building near a shoreline, river, floodplain, valley or wetland can need a conservation authority permit before the municipality will issue a building permit. We check the regulation mapping for your property early so it does not hold up the schedule.
Heritage properties
If your Cambridge home is designated under the Ontario Heritage Act or sits in a heritage conservation district, exterior changes generally need heritage approval as well as a building permit. We check your property's status before design starts.
Testing before demolition
Homes built before the 1990s can contain asbestos in plaster, textured ceilings, floor tile, vermiculite insulation and pipe wrap, and homes from before the 1960s often have lead paint. In Cambridge's older houses we test suspect materials before demolition and handle them by the regulations if they are found.
The service
Additions That Look Like They Were Always There
An addition gives you space that no renovation inside the existing walls can: a bigger kitchen and family room, a main-floor primary suite, a sunroom, or a second storey over a bungalow. For many families it is the alternative to moving out of a neighbourhood they love.
Additions are full construction projects. They start with drawings and, in most cases, zoning review and a building permit. Then come foundations, framing, roofing, windows, mechanical tie-ins and the interior finishes, all tied into the existing house so the roofline, siding and floors line up.
More about home additions →The process
How your Cambridge project comes together
01
Consultation
Tell us what you want to change and send a few photos. We visit, measure and talk through options.
02
Written Quote
A clear scope, materials, permits and schedule, in writing. No vague allowances.
03
Permits & Planning
Drawings, permits and material orders lined up before demolition starts.
04
Build & Walk-Through
Work done in the right order, inspected where required, and walked through with you at the end.
Across Cambridge
Home Additions throughout Cambridge
Cambridge brings together the historic cores of Galt, Preston and Hespeler, with stone and brick century homes along the Grand and Speed rivers and newer subdivisions in Hespeler and east Galt.
Nearby
Home Additions near Cambridge
Questions
Home Additions in Cambridge: FAQs
How do I get a home additions quote in Cambridge?+
Call (647) 424-1511, use the form on this page or email info@ontariorenovationcompany.com. Tell us what you want to change and send a few photos, and we will book a visit and send a written quote for your Cambridge project.
What kinds of Cambridge homes do you work on?+
All of them. Housing in Cambridge includes century and heritage homes, post-war bungalows and back-splits and newer homes built since 2000, and each comes with its own considerations, from older wiring and foundations to builder warranties, septic systems and shoreline rules. We plan the work around the house you actually have.
Do I need a conservation authority permit in Cambridge?+
Only if your property is in a regulated area, such as near a shoreline, river, valley, floodplain or wetland. Much of Cambridge falls within the Grand River Conservation Authority (GRCA) watershed. We check the mapping for your address before applying for the building permit.
Do I need a permit for an addition?+
Yes. Additions need a building permit, and many need zoning review for setbacks, height and lot coverage. Some also need a minor variance. We check what your lot allows before drawings are finalized.
Is it better to build up or out?+
It depends on your lot, zoning, foundation and how you want to use the space. Building out keeps everything on one level; building up preserves the yard. We walk through both during the visit.
Can we stay in the house during an addition?+
Usually, yes, because most of the work happens outside the existing walls until the final tie-in. We plan the connection to keep disruption as short as possible.
Do you build sunrooms?+
Yes. A four-season sunroom built as a proper insulated addition can be used year-round, unlike a three-season enclosure.
Do you offer home additions across Cambridge?+
Yes. We work throughout Cambridge, including Galt, Preston, Hespeler, Blair, East Galt and West Galt, and in nearby Paris, Ancaster, Dundas, Waterdown and Hamilton.
More renovation services in Cambridge
Alongside home additions, we also handle garden suites and detached ADUs, kitchen renovations and decks and outdoor living in Cambridge, so related work can be planned together.
Other basements, additions & outdoor services in Cambridge: basement finishing, legal basement apartments, garden suites & detached adus and decks & outdoor living.
Further reading
Your Cambridge renovation, done properly.
Tell us what you want to change and send a few photos. We will book a visit and send a clear written quote, with no obligation.