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. Whether you’re planning an accessory residential unit in London, Ontario, for family use or future income, our team helps you make smart decisions from day one.

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. As an experienced ARU builder in London, Ontario, homeowners trust that we design and build with long-term comfort, durability, and value in mind.

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

ARU OPTIONS AND USE CASES

An ARU can be tailored to suit your life today and your needs in the future.

Multigenerational living for parents, in-laws, or adult children
Rental income, including a private, self-contained suite on your property
Visiting family and friends: guest house or flexible space
Studio or home office that isolates work from the primary home
A downsizing alternative that leaves you on the same lot near family

Whether you call it an accessory residential unit or a residential accessory dwelling unit, we can help you make the right choice based on your objectives and property.

TYPES OF ARUs WE BUILD

No two properties are the same, which is why we customize the build type to match your lot, layout, and lifestyle.

Detached Backyard ARU Builds

A detached unit is ideal when you want maximum privacy and a fully separate living experience, especially if you’re looking for a garden suite builder in London, Ontario, with a custom approach.

Attached ARU Additions

A smart ARU can be an option for homeowners who want a connected layout but still want to establish a separate living space, ideal for multigenerational living and long-term flexibility.

Garage Conversion or Garage-Adjacent Builds

A garage conversion or a garage-adjacent construction can be an effective way to create more living space without expanding the footprint or access points.

Basement or Interior Suite Conversions

If your home layout allows it, an interior suite conversion can be a practical way to add a separate unit without expanding the building footprint.

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. Unlike a prefab-first ARU company, we customize layouts to suit your lot conditions, daily routines, and finish preferences.

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. Our ARU construction project management approach keeps every phase aligned, so timelines, trades, and inspections stay coordinated.

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. For homeowners planning ARU construction in London, Ontario, local bylaw knowledge makes the difference between delays and a smooth, confident build.

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. We design accessory residential units to feel like home, with thoughtful layouts, natural light, and finishes that match your style.

ARU CONSTRUCTION MANAGEMENT AND COMMUNICATION

Great builds don’t happen by accident but rather are the result of proper planning, regular communication, and effective on-site coordination.

Our ARU construction management solutions mean that you have a single team that manages all the moving components.

One dedicated point of contact for the entire build
Clear scope, schedule, and milestone planning from the beginning
Trade coordination and site supervision to maintain quality standards
Budget tracking and change-order clarity so there are no surprises
Regular progress updates to keep you informed at every stage
Final walkthrough and closeout support to ensure everything is completed properly

This is a professional ARU construction approach, done the right way, organized, transparent, and built around your peace of mind.

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.

If you’re considering an accessory residential unit in London, Ontario, our Discovery Package is the fastest way to confirm what’s possible on your specific lot.

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. Many homeowners start by searching for “ARU builder near me,” who can confirm feasibility before they commit. This is exactly what our Discovery Package is built for.

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. If you are looking for a professional ARU builder in London, Ontario, clients rely on for a fully managed experience, our team is equipped to deliver that level of support.

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. This is where ARU construction project management begins—by removing uncertainty and setting a clear plan before construction starts.

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. For homeowners planning a secondary suite builder in London, Ontario, permits and compliance are non-negotiable, and we manage the process from start to finish.

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. Whether it’s an accessory residential unit for a family or a rental, we design it to feel welcoming, private, and complete.

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. From planning through completion, our ARU construction management approach protects your timeline, your budget, and the final quality of the build.