Business Details
50+ Years
experience
Expert Home Builders in Sydney
Rossmark Building Designers Building Designers has been a trusted name in the building industry since 1975, proudly serving the Sydney region from its base in the Sutherland Shire. Specialising in both design and construction, we deliver comprehensive home solutions including renovations, ground floor extensions, and second-storey additions. Our multidisciplinary team of accredited building designers and technicians manages every project phase in-housefrom concept design and cost planning to documentation, approvals, and construction. This streamlined approach ensures seamless communication and eliminates the complexities of coordinating multiple parties.With decades of combined experience, we prioritise exceptional quality, functional efficiency, and customer care, tailoring each project to meet individual client needs. Our commitment to transparency, professionalism, and attention to detail has earned us a reputation for excellence, as evidenced by numerous client testimonials praising our collaborative approach, timely delivery, and craftsmanship. We invite you to explore our case studies and gallery to see how we transform homes and enhance family living spaces.
Services
Home Renovations
Ground Floor Extensions
Upper Storey Extensions
House Extensions
Details
- Year established: 1975
Highlights and features
- We have over 45 years of experience in residential building and design.
- Our in-house team manages projects from concept to completion.
- Clients praise our transparent communication and attention to detail.
- Award-winning service with a 4.9 rating from 67 reviews.
- Tailored solutions for renovations, extensions, and custom homes.
What people say
Absolute delight
Exceptional service
Highly recommend
Quality craftsmanship
Stress-free process
Services
Home Renovations
Rossmark Building Designers Building Designers specialises in comprehensive home renovations that enhance functionality and aesthetics. Our team works closely with clients to redesign spaces such as kitchens, bathrooms, and living areas while maintaining structural integrity. We handle all aspects from council approvals to material selection and construction, ensuring minimal disruption to homeowners. With decades of experience, we deliver tailored solutions that align with modern living standards and budgetary requirements.
Upper Storey Extensions
We design and construct upper storey extensions to maximise space in compact properties. Our process includes structural assessments, council compliance, and seamless integration with existing architecture. Clients benefit from increased living areas such as bedrooms, lounges, or home offices without compromising on quality. Our team ensures efficient project management and attention to detail, resulting in durable, visually appealing additions that enhance property value.
Ground Floor Extensions
Rossmark Building Designers Building Designers creates ground floor extensions to expand living spaces like kitchens, dining areas, and outdoor alfresco zones. We focus on harmonising new structures with existing homes while adhering to local regulations. Our end-to-end service covers design, approvals, and construction, prioritising energy efficiency and functional layouts. Clients receive customised solutions that improve usability and aesthetic appeal, delivered by a team with over 45 years of industry expertise.
House Extensions
Our house extension services cater to diverse needs, from adding bedrooms to creating open-plan living areas. We manage every project phase, including concept design, documentation, and construction, ensuring compliance with building standards. Clients appreciate our transparent communication, timely delivery, and craftsmanship. Whether expanding vertically or horizontally, we deliver cost-effective solutions that reflect individual lifestyles and enhance property functionality.
People
Peter
Project Manager
With over two decades of experience, Peter guides clients through the design and build process, ensuring their vision is realised with precision. He coordinates council approvals and construction phases, maintaining clear communication and attention to detail.
Glen
Site Supervisor
Glen oversees on-site operations, managing trades and ensuring projects meet quality standards. His hands-on approach and problem-solving skills contribute to seamless renovations, earning consistent praise for professionalism and reliability.
Matt Earl
Lead Designer
Matt specialises in transforming homes with creative, functional designs. His expertise in heritage negotiations and custom detailing has delivered award-winning projects, combining innovation with client-centric solutions for over 20 years.
Questions
What services does Rossmark Building Designers Building Designers offer?
We specialise in home renovations, ground floor extensions, upper storey additions, and custom designs, managing projects from concept to completion.
Which areas do you serve?
We operate across Sydney, including the Sutherland Shire, Eastern Suburbs, St George, and Georges River regions.
How long has Rossmark Building Designers Building Designers been in business?
Established in 1975, we have over 45 years of experience in residential building and design.
Do you handle council approvals?
Yes, our team manages all documentation, design approvals, and compliance requirements on your behalf.
Are emergency services available?
We prioritise timely support but do not offer 24/7 emergency services for standard projects.
Videos
Reviews (6)
Mark Young
Dec 28, 2021
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Highly professional, and exceptionally high standard of workmanship can be seen in the completed job. Absolutely no hesitation recommending Rossmark to anyone wanting to build, renovate or extend.
Services:Project management,Design,Flooring,Remodeling,Waterproofing,Consultation,Paint indoors
Highly professional, and exceptionally high standard of workmanship can be seen in the completed job. Absolutely no hesitation recommending Rossmark to anyone wanting to build, renovate or extend.
Services:Project management,Design,Flooring,Remodeling,Waterproofing,Consultation,Paint indoors
Darren Smith
Sep 20, 2021
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We had a very good experience with our renovation from the planning process with Peter through to the build managed by Glen. Nothing was a problem and all trades were easy to deal with. The quality of work and finishes were outstanding and we couldnt of asked for anything more. The end product is fantastic and has provided so much more room for our family.
Jonnie Lau
Apr 21, 2021
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We recently engaged Rossmark to carry out some renovations to our home. We had spent months working a design that would fit our budget and meet our requirements. Rossmark were happy to work with us until we were 100% happy on the design. All the trades that were used by Rossmark were professional, considerate of your space, took pride in their work and above all, worked to a high standard. The whole team should be extremely proud of each other they all provide exceptional service. I would not hesitate in recommending Rossmark to anyone looking to renovate, redesign or build. We're already thinking
Paul Lunniss
Apr 11, 2021
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Rossmark has just complete a first-floor addition to our property. Having managed contracts client side for the last 20 years I can appreciate how lucky we are to have secured Rossmark for our build. The entire process went better than expected with the standard of finish second to none. Naturally we have no hesitation in recommending Rossmark to friends and family for future first floor additions.
David Kirkwood
Dec 10, 2020
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We would highly recommend Rossmark for their building services. We were very happy with the end to end design and build process and the quality result. From Matts bright and airy design and direction, Peters overall project management and internal design discussions and Glens weekly build status updates and quality and considered answers to all of our challenging questions! The trades Rossmark employed produced work of the highest quality, worked well together, were considerate and professional and we never even heard a swear word!
Rossmark has given our girls their own bedrooms, a
Rossmark has given our girls their own bedrooms, a
Lisa Rose
Nov 16, 2020
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Rossmark made our first foray into renovating a seamless, straightforward and enjoyable process. We truly could not be happier with the end-result! Our project scope was large, involving significant structural changes to a heritage home and considerable negotiations with council to seek approval for final plans. Rossmark managed each step of the process impeccably; from concept design, construction and final hand-over.
Matt, Peter, Glen and Ben were wonderful to work with and kept us informed and consulted on a weekly basis throughout the build, alleviating concerns for us as first-time renovators
Matt, Peter, Glen and Ben were wonderful to work with and kept us informed and consulted on a weekly basis throughout the build, alleviating concerns for us as first-time renovators
