Trusted Custom Home Builder Sydney

Transforming Spaces with Precision and Care, from New Builds to Renovations and Project Management.

Our Team Has Over 30 Years Experience in Sydney

Quality Craftsmanship

We deliver high standards of workmanship, ensuring every detail of your project meets our commitment to excellence and durability.

Personalised Service

Our hands-on, family-run team works closely with you, offering tailored solutions that align with your unique needs and vision.

End-To-End Guidance

From planning and design to construction and finishing touches, we manage every stage of your project for a stress-free experience.

Discover The Magic Of Our Recent Projects

Experience seamless project management, tailored construction solutions, and exceptional craftsmanship from concept to completion, all delivered by a trusted team dedicated to bringing your vision to life.

Well Furnished Bondi Living Room
Bondi
Exterior view of Firmus Drummoyne Living Room
Drummoyne
Lavish staged kitchen in Terry Tempe property
Tempe
Exterior view of Firmus Drummoyne Living Room
Earlwood

Reliable Building Projects Across Sydney

Transform your home with our expert building and renovation services, from new homes and duplexes to renovations and extensions. We deliver quality craftsmanship and a seamless experience, managed professionally from start to finish.

New Home

Duplexes

Unit Renovations

Extension Renovations

Interiors

Project Management

Our Mission and Vision

At Firmus Building we offer specialisation in building and construction. Our experienced, hands on family operation takes great pride in consistently delivering outstanding projects and positive customer experiences characterised by quality and value.

Thanks to long standing relationships with reliable and experienced contractors, Firmus Building is able to provide tailored solutions which meet our clients’ needs. For us, personalised service, client satisfaction, quality workmanship, accountability and efficiency are always in scope.

Whether it’s project management or major alterations and additions, from concept to completion, you can rely on Firmus Building for your next project journey.

Master Builders Association Logo
Housing Industry Association Member

Testimonials

What Our clients say

Firmus Building
5.0
Based on 7 reviews
powered by Google
Antoine RizkAntoine Rizk
10:23 20 May 24
Precision, professionalism and quality. Highly recommended. Very happy customer.
Nicole FlorenceNicole Florence
09:01 08 Mar 22
Daniel and Natasha performed beyond expectations, all my questions answered and they went over and above to make me happy. I highly recommend Firmus Building for their professionalism, knowledge and brilliant ideas.
Christie ToumaChristie Touma
05:43 08 Dec 21
We engaged Daniel and his team at Firmus to complete our pool decking.We were so pleased with the service he provided. His communication was great, he solved many unforeseen problems and provided efficient solutions.He attend when he said and did the work in a timely manner. His work is clean and we were satisficed with the result.Highly recommend!
Daniel and his team have been so fantastic to work with. Due to management requirements, construction work had to be undertaken out of business hours with our specific request that we have no downtime in our usual schedule. Daniel went above and beyond, helping us move large pieces of furniture well into the evening on a Friday night and all through the weekend, liaising with management and all-involved parties, keeping us informed at all times. All communication and invoicing was discussed beforehand and clear. Trades were efficient and tidy. Daniel possesses that rare combination of transparency, honesty, time-consciousness, client loyalty, eye for detail, intelligence and emotional intuition which is rarely seen, let alone in the construction industry.
Laura DangLaura Dang
06:25 24 Nov 21
Firmus Building provided solid advice, delivered a good quality product and their contractors turned up daily to complete work in a timely manner. As they put the roof on quickly when the weather turned, our construction was completely water proof and the contractors could continue with putting in fixtures and fitting. Job well done!
Joseph AgiusJoseph Agius
05:42 24 Nov 21
I would not hesitate to recommend Daniel and his building company Firmus. We were kept informed all the way through the build with regular updates on progress and costs etc. Their workmanship is of the highest quality with attention to detail.
John KalachJohn Kalach
00:26 24 Nov 21
Daniel and his team completed our renovation on time and within budget.The trades were polite and always kept the site clean.I would not hesitate in recommending his services to friends and family.
js_loader

Everything You Need To Know

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.