Review budget, buildability and approvals before plans or quotes progress too far.
Led by Mark Rennie, RENSTRUCT helps Melbourne South East homeowners plan custom homes, renovations, extensions and outdoor living projects with practical building guidance from the start.
Many homeowners start with an idea but are unsure what should happen next. Should they speak to a builder, draftsperson, architect, engineer or council first? Is the budget realistic? Will the existing home support the proposed work? Are permits likely to be needed?
RENSTRUCT helps homeowners work through those questions early, so projects can move forward with fewer costly surprises.
For nearly 30 years, I’ve worked in residential construction, helping homeowners turn ideas into practical, well-planned building projects.
Throughout my career, I’ve come to believe that successful projects don’t begin with construction—they begin with good decisions.
I’ve always believed that a builder’s responsibility starts long before construction begins. Helping homeowners make informed decisions early often saves far more than it costs.
Whether it’s understanding a realistic budget, assessing what’s possible on a site, or navigating the approvals process, I believe clarity at the beginning leads to better outcomes at the end.
I believe in being straightforward and transparent. If something is achievable, I’ll explain how. If it isn’t the right approach, I’ll explain why and work with you to find a better solution.
Building is one of the biggest investments most families will make, and honest advice is just as important as quality workmanship.
"Whether you're just exploring ideas or ready to build, my goal is to help you move forward with confidence, knowing you're making informed decisions from the very beginning"
We start with the home, site, budget, family needs and outcome the homeowner wants to achieve.
RENSTRUCT considers structure, access, buildability, permits, consultants and documentation needs.
The aim is to work out whether design, planning, engineering, budgeting or quoting should come next.
Once the pathway makes sense, the project can move forward with stronger alignment between design and construction.
A building project can become expensive when drawings, permits or quotes move ahead before the practical issues are checked. RENSTRUCT helps homeowners review budget, buildability and approval issues while the project can still be adjusted.
RENSTRUCT works across custom homes, renovations, extensions, granny flats, outdoor living spaces and early-stage planning guidance.
Plan and build a new home around your site, lifestyle, budget and long-term goals.
Improve the way your existing home looks, feels and functions day to day.
Create more space while working with the existing home, structure and site.
Explore secondary dwelling options for family, lifestyle or investment needs.
Create alfresco and outdoor spaces that connect naturally with the home.
Review budget, buildability and approvals before plans or quotes progress too far.
Plain-English advice so homeowners understand options, risks and the next practical step.
Residential work approached with care for structure, function, detail and long-term value.
Working with homeowners, consultants and trades so everyone understands the project direction.
A hands-on builder involved in the project direction, not just a name on the quote.
RENSTRUCT works across Melbourne’s South East and surrounding areas, helping with early-stage advice for renovations, extensions, custom homes, granny flats and outdoor living projects.
No. You can speak with RENSTRUCT while your ideas are still early, or after you already have concept drawings. Early builder input can help you understand whether the project is heading in a practical direction.
Yes. RENSTRUCT can help you understand the practical building considerations first, so your design brief is clearer before you move too far into drawings or consultant work.
RENSTRUCT works on custom homes, renovations, extensions, granny flats, alfresco areas, outdoor living spaces and planning-stage residential building guidance.
Yes. RENSTRUCT works across Melbourne’s South East and surrounding areas, including the Dandenong, Casey, Kingston, Monash, Bayside and Mornington Peninsula regions.
Yes. If you already have drawings, RENSTRUCT can review the project direction from a builder’s perspective and help you understand practical construction, budget and buildability considerations.
A first conversation can help you understand your options, the likely pathway and the most practical next step for your home.
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