ARU CUSTOM BUILDS

An Accessory Residential Unit (ARU) is a fully self-contained home built on the same lot as your existing property—perfect for multigenerational living, rental income, or added space.

At Modern Day Builder, we’re proud to be London’s leading choice for custom ARU builds. While many companies only offer prefabricated models with fixed layouts, we take a fully customized approach—maximizing every inch of your available square footage and tailoring the design to suit your style, budget, and unique needs.

From concept to completion, we build smarter, not smaller.

HOW WE ARE DIFFERENT

FULLY CUSTOM BUILDS

Most builders offer cookie-cutter models with fixed dimensions and layouts. We design and build your ARU from the ground up, maximizing your available lot space and tailoring every detail to your lifestyle.

END-TO-END PROJECT MANAGEMENT

From zoning checks and permits to interior finishes, we handle the entire process. You won’t need to juggle multiple contractors—we’re your one point of contact from start to finish.

LOCAL EXPERTISE IN ARU REGULATIONS

We understand London’s zoning bylaws, building codes, and permit process inside and out. Our Discovery Package ensures you get accurate, upfront answers about what’s possible on your property.

BUILT FOR REAL LIVING

Your ARU isn’t just a structure—it’s a fully functional home. We focus on comfort, design, and long-term value to create a space that doesn’t just meet requirements but truly elevates your property.

black lines

FRom previous builds

ONE STORY ARU

TWO STORY ARU - MAIN FLOOR

TWO STORY ARU - BASEMENT

OUR DISCOVERY PACKAGES

Our Discovery Package is the first step in turning your ARU vision into a reality. It’s a comprehensive, low-commitment service that gives you all the critical information you need before breaking ground. We assess your property for eligibility, determine how large your ARU can be, review zoning and bylaw requirements specific to your location, and outline a clear path forward. With our Discovery Package, you’ll have the answers you need to make informed decisions—without the guesswork. Let us do the heavy lifting so you can start building with confidence.

TO INQUIRE ABOUT OUR DISCOVERY PACKAGES - FILL OUT OUR CONTACT FORM BELOW AND WE WILL BE IN TOUCH!

Frequently Asked Questions

What exactly is an ARU, and is it right for my property?

An Accessory Residential Unit (ARU) is a self-contained house constructed on the same property as your main house. It is perfect for multigenerational living, rental income, or simply having additional space. If you are not sure whether your lot qualifies, our Discovery Package will determine your eligibility and provide a clear breakdown of what is possible, with no obligation.

How is your process different from other ARU builders?

Many companies offer pre-designed models with little flexibility. We provide fully customized ARU builds, carefully designed to fit your space, lifestyle, and budget. Our team also offers construction management consulting services to guide your project from concept to completion—with zero guesswork or juggling of contractors.

What’s included in your Discovery Package?

It is a thorough initial move in the construction of your ARU. We deal with zoning evaluations, bylaw studies, property surveys, and feasibility studies. It is ideal for homeowners who would like to know the answers before committing to a complete construction project. And when you are ready to take the next step, our construction management services will keep your project on schedule, on budget, and on track to your objectives.

Do I need permits to build an ARU in London, Ontario?

Yes, permits are required, and the London zoning bylaws can be a pain. The good news? We handle it all for you. With a thorough understanding of local laws, we ensure your construction complies with all codes from the earliest stage, saving you time, stress, and potential fines.

How do I ensure my ARU feels like a real home, not just a unit?

That is one of our top priorities. We do not simply meet the minimum requirements, but we are concerned with comfort, functionality, and long-term value. Our team ensures that your ARU does not compromise your home, but rather seamlessly extends it, maintaining consistency in layout, lighting, and finishes. Our construction management consulting services will help us steer each detail to suit your vision.

What’s the benefit of working with a company that offers end-to-end construction management?

It means less risk, fewer delays, and no miscommunication between trades. With our comprehensive construction management services, you get one experienced team handling everything—from design and permits to construction and the final walkthrough. That consistency leads to better quality and a more enjoyable experience overall.