🏡 Home Extension Services in Guelph, Ontario & Surrounding Areas

Need More Space? We Build It Right.

At A1 Custom Construction, we offer professional home extension services in Guelph, Ontario, and across the surrounding regions. Whether you’re adding a new bedroom, expanding your kitchen, or building a second storey, we deliver smart and seamless additions that match your home’s style and structure—so it feels like it was always part of your space.

With years of experience, high-quality materials, and expert planning, we help Canadian homeowners increase comfort, functionality, and property value—without the stress of moving.

Why Choose A1 for Your Home Extension?

✅ Custom Designs to Match Your Home
We create layouts that meet your specific space needs and match your existing home perfectly.

✅ Licensed & Insured in Ontario
Our team is fully licensed, insured, and familiar with Guelph’s building codes, permits, and safety regulations.

✅ Seamless Integration
Your new extension won’t look like an “add-on.” We ensure it blends naturally with your home’s original design.

✅ Built for Canadian Climates
From insulation to windows, we use energy-efficient materials ideal for Ontario weather—helping you save on heating and cooling costs.

Types of Home Extensions We Offer

  • ✅ Bedroom & Living Room Additions

  • ✅ Kitchen Expansions

  • ✅ Second Storey Additions

  • ✅ Garage Conversions

  • ✅ Sunrooms & Enclosures

  • ✅ In-Law Suites or Legal Basement Units

Whether you need more room for your growing family, working from home, or looking to add rental income space, our team brings the vision to life.

Proudly Serving Guelph and Nearby Communities

Based at 90-88 Decorso Drive, Guelph, ON, N1L 0A1, A1 Custom Construction proudly serves homeowners throughout Guelph, Kitchener, Cambridge, Waterloo, Mississauga, and surrounding cities.

We understand local bylaws, permit requirements, and construction standards across Ontario—ensuring a smooth, code-compliant project every time.

Expand Your Home with Confidence

With A1 Custom Construction, home extensions are made easy, stress-free, and built to last. From the first design meeting to the final walk-through, we’re with you every step of the way.

📞 Call us today at +1-416-984-2700 for a free consultation and quote.
📍 Visit us at: 90-88 Decorso Drive, Guelph, ON, N1L 0A1, Canada
🛠️ Trusted by Ontario homeowners for quality construction services.