We are your independent custom builder in Perth & Margaret River region


Leimac Building is your independent,
custom home and granny flat builder
in Perth & south west Western Australia.

We build on time | on spec | on budget


Leimac Building is a custom builder that has been servicing Western Australian families and businesses since 1995.

The company was established by Gavin Leiper, a registered builder for over 30 years, and specialises in framed home construction, custom-built homes and granny flats, commercial developments and renovation projects.

Our Perth office is in Victoria Park. Our south west office is on Miamup Rd, Cowaramup, but we service the Margaret River region including Witchcliffe, Redgate, Rosa Brook, Cowaramup, Gracetown, Wilyabrup, Metricup, Yallingup, Dunsborough, Busselton areas and more!

margaret river builder

We have qualified tradies across the south west of Western Australia who are helping us earn a stellar reputation as the best local builder in the area.

Call us, and let us help you from go to whoah — from concept to completion, we are the custom home and granny flat builder you can trust.

Word of mouth” referrals remain our strongest source of new customers — clients are 100% happy with our service as their home / granny flat designer and builder — so refer their friends and colleagues. Thank you, from the team at Leimac Building!

Call Gavin Leiper direct to discuss your project — 0428 97 87 00 — or contact us through our contact page.

We look forward to helping you make yourself a home!