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 design software and coordinate between architects, engineers, planning authorities and production.

Prefab Modular Homes | Western Canada | Built Indoors | Built Prefab


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.

Prefab Modular Homes | Western Canada | Built Indoors | Built Prefab


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

Prefab Modular Homes | Western Canada | Built Indoors | Built Prefab

Learn More. Download our 2021 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.

Prefab Modular Homes | Western Canada | Built Indoors | Built Prefab

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 in 2019 to pursue modular construction. James is a big picture thinker that loves to come up with innovative approaches to tough problems.

Prefab Modular Homes | Western Canada | Built Indoors | Built Prefab

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 2021 Buyer’s 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.

Financing a Modular Home Purchase

Financing a Modular Home Purchase The Basics So you’re interested in purchasing a modular home, and need to more about how you will finance the project. This is a simple[…]

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The British Columbia Step Code and its Impact on Construction

The British Columbia Step Code and its Impact on Construction What is the BC Building Code? Construction in British Columbia is governed by the BC Building Code. Among other things,[…]

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Last Call For Secondary Residences in the ALR | Building | Built Prefab

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[…]

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Contact us

We’d love to talk about your project.