About Us

custom granny flat design for Dunsborough by flying builder
granny flat custom design by Leimac Building

Leimac Building: Your Local Custom Builder in the Margaret River region
(south west Western Australia)

When people are looking for a great builder, our clients tell them about us… Word of mouth” referrals remain our strongest source of new customers — clients are 100% happy with our service and their product so refer their friends and colleagues. Thank you, from the team at Leimac Building Company!

History of the Leimac Building Company

Leimac Building Pty Ltd was formally established in 1995 by registered builder Gavin Leiper, and is based in Cowaramup, in the south west of Western Australia.

Since then, the company has built homes from Dunsborough on the western seaboard to Esperance in the east of the state, as far south as Augusta and north to Port Hedland, and throughout the wheatbelt and the mid west.

We are based in the Margaret River region, but service the whole of the south west Western Australia. Call us on 1300-LEIMAC (1300-534-622) to let us help!

Our Specialty

The company specialises in energy-efficient, light-weight framed constructions, both commercial and residential.

Our most popular builds are granny flats, chalets, duplexes, investment houses and family homes, (both single and double storey).

We work with budgets from $50,000 to more than $1 million.

We are a full service building company

We have aligned ourselves with strategic partners to make us a full service builder. This means we’re effectively a “one-stop shop” for your design, planning and construction needs.

We have proven partnerships with:

  • finance
  • design
  • planning
  • approvals and certification
  • modular supply
  • renovations

These partnerships enable us to support our clients’ needs from budgeting to bespoke design, all the way through to final handover – all under one roof.

We have expanded to include commercial constructions

Since expanding in 2013, Leimac Building also caters to commercial building, modular installations, and renovations, extensions and conversions.

In 2015, Leimac Building Company was proud to build the Phoenix Insurance building in Busselton; a 2-storey framed construction with a combination of exterior cladding such as hebel and fire-rated mag oxide board.