Firmus Building is a family-run company with over 30 years of experience building custom homes across Sydney. We combine expert craftsmanship, tailored service, and seamless project management to ensure quality, on time and on budget. Whether building new or renovating, we’re your trusted partner from start to finish.
What we stand by.
We guide each project from concept to completion with clarity and care. We start by listening, understanding your goals, budget, and vision. From there, we manage every stage, coordinating trusted trades and suppliers to ensure quality and efficiency. Communication is key, so we keep you informed at every step, making the process smooth and stress-free.
The Power Behind Every Project — A passionate crew of builders, thinkers, and doers driving quality, collaboration, and results from the ground up.
Our team is the heartbeat of every project. With a commitment to precision, collaboration, and forward-thinking design, we bring together skilled tradespeople, project managers, and problem-solvers who thrive on turning ideas into reality. Whether it’s a custom home or a complex build, our team works with integrity to deliver spaces that stand the test of time.
Firmus Building specialises in residential and small commercial projects, including new builds, structural and complete renovations, and remediation work. We can build from your approved plans and specifications or guide you along the process from conception.
Firmus Building specialises in residential and small commercial projects, including new builds, structural and complete renovations, and remediation work. We can build from your approved plans and specifications or guide you along the process from conception.
Taking great pride in offering transparency, our quotes are highly detailed and based on initial consultation, project scope, and site evaluation.
Each project is considered individually and wholly. When Firmus Building presents a quote, we itemise every known element of the project and make every effort to account for each possible cost from labour, materials, services and more.
And where we can’t put a cost, like unknowns or consultant fees, we bring to your attention. This means by the end of the quotation process, the client has a realistic indication of what the cost of their project is, meaning very few out-of-scope elements, surprises and additional costs down the track.
Our process includes a thorough consultation, detailed planning, regular progress updates, and final inspections to ensure that the project meets your expectations.
Our clients tell us communication is one of our greatest strengths, and we agree. Firmus Building clients have full visibility to their project status at any time because we communicate openly and frequently.
Project timelines vary depending on scope and complexity.
We’ll provide you with a timeline estimate based on your specific project during our initial consultation stage. While we make every effort to keep on track, project timelines can change during projects too thanks to external factors and scope change. If this were the case, our client is informed at the earliest possibility to manage expectations.
Yes, changes can be made, but they may affect the project timeline and budget. We work closely with you to accommodate changes and ensure that all adjustments are documented.
Firmus Building specialises in residential and small commercial projects, including new builds, structural and complete renovations, and remediation work,
We can build from your approved plans and specifications or guide you along the process from conception.Taking great pride in offering transparency, our quotes are highly detailed and based on initial consultation, project scope, and site evaluation.
Each project is considered individually and wholly. When Firmus Building presents a quote, we itemise every known element of the project and make every effort to account for each possible cost from labour, materials, services and more. And where we can’t put a cost, like unknowns or consultant fees, we bring to your attention. This means by the end of the quotation process, the client has a realistic indication of what the cost of their project is, meaning very few out-of-scope elements, surprises and additional costs down the track.Our process includes a thorough consultation, detailed planning, regular progress updates, and final inspections to ensure that the project meets your expectations.
Our clients tell us communication is one of our greatest strengths, and we agree. Firmus Building clients have full visibility to their project status at any time because we communicate openly and frequently.Project timelines vary depending on scope and complexity.
We’ll provide you with a timeline estimate based on your specific project during our initial consultation stage. While we make every effort to keep on track, project timelines can change during projects too thanks to external factors and scope change. If this were the case, our client is informed at the earliest possibility to manage expectations.Yes, changes can be made, but they may affect the project timeline and budget.
We work closely with you to accommodate changes and ensure that all adjustments are documented.We have a talented and experienced in-house design expert that is available for consultation to guide you along the way. Together you can bring to life your vision, navigating and appointing the details and decorative touches across your project.
Yes, we are fully licensed and insured to operate. This includes liability insurance and workers’ compensation to protect you and our team throughout the project. Our team operated within relevant building codes.
We address any unexpected issues promptly and discuss potential changes with you. We provide updated estimates and timelines as needed to keep the project on track.
We do offer warranties on our workmanship and the materials used. Specific details about our warranties and guarantees will be outlined in your contract.
We have a talented and experienced in-house design expert that is available for consultation to guide you along the way.
Together you can bring to life your vision, navigating and appointing the details and decorative touches across your project.Yes, we are fully licensed and insured to operate. This includes liability insurance and workers’ compensation to protect you and our team throughout the project.
Our team operated within relevant building codes.We address any unexpected issues promptly and discuss potential changes with you. We provide updated estimates and timelines as needed to keep the project on track.
We do offer warranties on our workmanship and the materials used. Specific details about our warranties and guarantees will be outlined in your contract.
Firmus Building specialises in residential and small commercial projects, including new builds, structural and complete renovations, and remediation work,
We can build from your approved plans and specifications or guide you along the process from conception.Taking great pride in offering transparency, our quotes are highly detailed and based on initial consultation, project scope, and site evaluation.
Each project is considered individually and wholly. When Firmus Building presents a quote, we itemise every known element of the project and make every effort to account for each possible cost from labour, materials, services and more. And where we can’t put a cost, like unknowns or consultant fees, we bring to your attention. This means by the end of the quotation process, the client has a realistic indication of what the cost of their project is, meaning very few out-of-scope elements, surprises and additional costs down the track.Our process includes a thorough consultation, detailed planning, regular progress updates, and final inspections to ensure that the project meets your expectations.
Our clients tell us communication is one of our greatest strengths, and we agree. Firmus Building clients have full visibility to their project status at any time because we communicate openly and frequently.Project timelines vary depending on scope and complexity.
We’ll provide you with a timeline estimate based on your specific project during our initial consultation stage. While we make every effort to keep on track, project timelines can change during projects too thanks to external factors and scope change. If this were the case, our client is informed at the earliest possibility to manage expectations.Yes, changes can be made, but they may affect the project timeline and budget.
We work closely with you to accommodate changes and ensure that all adjustments are documented.We have a talented and experienced in-house design expert that is available for consultation to guide you along the way.
Together you can bring to life your vision, navigating and appointing the details and decorative touches across your project.Yes, we are fully licensed and insured to operate. This includes liability insurance and workers’ compensation to protect you and our team throughout the project.
Our team operated within relevant building codes.We address any unexpected issues promptly and discuss potential changes with you. We provide updated estimates and timelines as needed to keep the project on track.
We do offer warranties on our workmanship and the materials used. Specific details about our warranties and guarantees will be outlined in your contract.
© 2025 FIRMUS BUILDINGS. All rights reserved.