About Us


To build the best structures in the world, creating innovative solutions that reduce waste and improve lives 

Built Prefab designs, manufactures and installs premium prefab modular buildings.

Our focus is on prefab modular construction, technology and innovation to create beautiful and sustainable structures.

By design, our sales and building processes are simplified.

All of our modules are built on a fixed cost and fixed timeframe.


Our Offering

Built Prefab is a full service business dedicated to serving its customers.


Built Prefab’s design department, Built Labs works from the ground up using the latest 3D building information modelling software (BIM) and coordinate between architects, engineers, planning authorities and production.


Our buildings are built indoors, away from the elements utilizing Toyota style one piece flow manufacturing with a focus on people and continuous improvement working with some of the most experienced modular builders in the business.


Built offers full modular installation services including all site coordination, logistics and completion.

Learn More. Download our 2020 Design Catalogue.


Environmentally Conscious 

We believe that the Built environment meets principles of ecological sustainability.


The intention of sustainable design is to eliminate negative environmental impact completely through skillful, sensitive design.


Built Prefab designs its homes as a system. Our focus is on creating a superior building envelope utilizing the latest techniques in creating superior weather, air, water and thermal layers and increasing building performance through efficient mechanical systems.


Our operations focus on continuous improvement and the ongoing reduction of waste.


By building each structure offsite, there is less traffic, fewer disturbances to the land and reduced construction schedules all benefiting the environment.

Our Team

We’re passionate about prefab and have the experience to deliver.

James Rosowsky

Founder and CEO

James is originally from a small town in East Central Saskatchewan and has been working in Real Estate and Construction for more than 10 years.

James started as a full time musician and then became a business lawyer at a national firm in Calgary.

After, James started his own firm and began his career in prefab in 2013 with Karoleena Homes. James became the CEO of Karoleena and continued to grow the business until 2016 when the company was sold to Horizon North Manufacturing.

Since, James has worked with one of the leading mass timber installers in North America, Seagate Structures, as the Chief Strategy Officer, and founded Built Prefab to pursue modular construction.

James is a big picture thinker that loves to come up with innovative approaches to tough problems.

Ian Garrity

Co-Founder and President

Ian was born and raised in Philadelphia, PA and has been involved in development and construction for more than 10 years.

Ian got his start with the Parec-Cyma Group and then gained significant experience in Project Management overseeing multi-million dollar custom site-built residential construction, and was subsequently a Project Manager on the BP Amoco Deepwater Horizon litigation in the US.

Ian moved to Canada in 2006 and was one of the developers and co-founders of the Nowhere Special bar and hotel at Red Mountain in Rossland, BC.

In 2015, Ian began his career in prefab and modular construction, first as a Project Manager at Karoleena Homes based in Okanagan Falls, BC and then later in Business Development for the San Francisco based high end modular startup Dvele.

Ian’s skills include sales and project management, real estate, business organization and communication, among others. His modus operandi is to make sure that no detail is left unconsidered.

Learn More. Download our 2020 Finishing Guide.


Start your design today!

Get started on your design today with Built Prefab. Choose from a staged approach to your standard design, or complete the entire package at once and receive a discount.


Latest from Our Blog

Check out our blog to read more about various prefab and modular construction topics.

Last Call For Secondary Residences in the ALR

We’ve written a few times of the impending ALR deadlines relating to secondary residences.  As we understand it, as of December 31, 2020 the maximum size of a new secondary[…]

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Built Prefab in the News, More on the ALR

Built Prefab in the NewsWe’ve been getting some press and it has been nice to talk about what we’re doing.If you’re interested, take a look at the recent BC Business[…]

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Covid 19 and Design, New Model and Modifying Floorplans

THE IMPLICATIONS OF COVID 19 ON NEW HOME DESIGN As the coronavirus spread and lockdown life became the new normal we have all ended up spending a lot more time[…]

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Contact us

We’d love to talk about your project.