1/9
"We just completed a renovation with Rossmark, and they have been an absolute delight to work with." - Katie
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2/9
"We would recommend Rossmark to anyone that is wanting to do a renovation." - Kathi
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3/9
"Matt Earl and his team gave us our dream home." - Robin
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4/9
"Having managed contracts client side for the last 20 years I can appreciate how lucky we are to have secured Rossmark for our build." - Paul
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5/9
"Rossmark did a superb job. Every member of the team, from the CEO to the youngest apprentice, was a pleasure to deal with." - Jodie
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6/9
"We are so happy with the incredible top floor extension to our property, the space Rossmark has created has really benefited our family unit." - Emma
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7/9
"Peter, Glen and the whole crew were absolutely amazing. Right from the start everyone was professional and respectful yet always friendly." - Lyndall
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8/9
"Highly professional, and exceptionally high standard of workmanship can be seen in the completed job." - Mark
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9/9
"Peter, Glen and the whole team from Rossmark were a pleasure to deal with and very professional though out the home extension process." - Daniel
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Our Projects

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1/9

Sue and Rhett

First Floor Addition | Lilli Pilli

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2/9

Michael and Lisa

Terrace Renovation | Darlington

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3/9

Matt and Alex

Home Renovation & Extension | Oyster Bay

View this case study

4/9

Simon and Patsavee

Home Renovation | Illawong

5/9

Rick and Kerrie

First Floor Addition | Barden Ridge

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6/9

Elizabeth and David

Home Extension | Como

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7/9

Virginia and Paul

Second Storey Addition | Como

View this case study

8/9

Bianca

First Floor Addition | Caringbah

View this case study

9/9

Rossmark

Six steps with us

6 step build process

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About Rossmark building designers

Rossmark building designers is a highly respected name in the building industry, established in the Sutherland Shire and proudly serving the Sydney region since 1975. Specialising in both design and construction, we offer a comprehensive array of home solutions, including, Home renovations, ground floor extensions, and second-storey additions. Our reputation for exceptional quality and customer care is well-earned, as we deliver a distinctive combination of design and building services that ensures your project is both cost-effective and visually striking while maintaining functional efficiency.

Our approach simplifies the process for clients by managing every aspect of the project in-house, including concept designs, cost planning, building plans, documentation, and authority applications. Our multidisciplinary team of accredited building designers and design technicians serves as a single point of contact, streamlining communication and eliminating the complexities associated with coordinating multiple project facets.

We meticulously handle all behind-the-scenes requirements, from authority applications and documentation to material selection and construction, facilitating a smooth and efficient process from the initial design phase through to construction and final handover. Whether you envision adding an additional level to your home, expanding with a ground floor extension and alfresco area, creating an open concept living space that integrates kitchen, dining, and outdoor areas, or renovating key spaces like the kitchen, laundry, or bathroom, Rossmark Building Designers brings the expertise, experience, and dedication necessary to realise your vision with the highest standards of quality and professionalism.
Our aim is to support you through each stage of the process, providing professional advice and assistance to ensure your home renovation, extension or addition meets your expectations. We invite you to review our case studies and gallery pages for a detailed overview of our projects.

 

Rossmark Building Designers - Home Renovations and Extensions

4.9 56 reviews

  • The Rossmark team have just completed our renovation involving two deck areas with pergolas, added a car port and landscaped our backyard.
    Their team and trades people were fantastic: all were professional, very skilled and polite.
    All
    … More the way through the build process from the design considerations and contact with Pete, then Glen coordinating the team on site, we are very impressed with the result from Rossmark.
    We would highly recommend Rossmark to other clients for their projects.
    Ian Little ★★★★★ 3 weeks ago
  • Rossmark recently renovated our entire home. The works included replacing the roof, all windows, recladding external walls, new timber flooring, bathrooms, kitchen, tiling front patio, installing composite timber rear deck and roof, renovating … More swim pool and surrounds and internal/external painting.
    Our initial discussions were with Peter through the planning process including quotations for the works and later with Glen who managed the project on the ground. Both were outstanding building professionals who offered advice and guidance from start to finish with regular meetings and updates. .
    All the Rossmark team members and employed contractors were diligent, highly skilled at their trades, offered professional advice plus very friendly and respectful.
    The quality of the building work is exceptional, with a high level of skill, expertise and attention to detail.
    The whole project entailed an extensive renovation over several months and was stress free. We are very happy with the work and the end result.
    Rossmark is a company you can trust and we highly recommend.
    Tony Slack ★★★★★ a week ago
  • We just completed a renovation with Rossmark, and they have been an absolute delight to work with. They are a lovely bunch of people, who put a lot of energy into understanding our family and the project brief. They made everything easy, … More from the design phase, right through to the build phase. They have excellent communication and their quality is second to none. They provided excellent and practical guidance when we were stuck, or proactively suggested changes if they saw we could get a better outcome with something else. We've been recommending them to everyone we've spoken to about to embark on a renovation!
    I would especially like to mention how awesome Peter is. He was our project manager right from the initial consultation, through the concept designs, getting everything approved through council and then the final building stage. He is an excellent communicator, who really took the time to understand our family and our needs. I really appreciate all your work, and would highly recommend you to anyone.
    Katie Duncan ★★★★★ 4 months ago
  • We cannot thank Peter, Glenn and the Rossmark team enough.
    The level of professionalism was outstanding. We recommend them highly.
    Everyone that came into our home was so polite, patient and understanding, with the work completed to an
    … More extremely high standard.
    As daunting as it was for us to start the process, the Rossmark team made our journey very special with a wonderful end result. We are so happy with our new home.
    Michael Pinkerton ★★★★★ a month ago
  • If you’re looking for an exceptional service, look no further than Rossmark!!
    We recently had the pleasure of working with Rossmark again. Matt, Peter, Glenn and everyone concerned did a fantastic job. This is our second time with the team.
    … More We had an upper level added 8 years ago. This time we renovated the downstairs area. The whole team were great from the initial consultation to the final walkthrough. Communication was clear and consistent. The team kept us updated on progress and was quick to address any questions or concerns. The design and quality of work is expectational and we love our new space! Well done to all concerned, keep up the good work.
    Carl Fowler ★★★★★ 2 months ago
  • We recently used Rossmark to renovate an entire level of our home. Our initial meeting with Pete was great, he advised us on the plans we had and several options in achieving what we wanted. Glen was also great with getting things done. … More Their tradesmen were fantastic, quality work, considerate and friendly. We are extremely happy with the work carried out and would definitely recommend anyone considering renovating to contact them.
    sandra healey ★★★★★ 4 months ago
  • We would recommend Rossmark to anyone that is wanting to do a renovation. They were honest, trustworthy and 100 percent transparent throughout our build. We would choose Rossmark again without hesitation.
    Rossmark have extremely high
    … More standards for all their sites and as a customer you see this from the beginning of the build to the end of the build. All trades that were engaged by Rossmark were fantastic to work with.
    Our teenagers absolutely love their new spaces and the finishes are better than we envisioned.
    Kathi Rogers ★★★★★ 4 months ago
  • Almost 20 years on and still exceptionally happy with Rossmark...We added a second storey to our home in 2006 and can guarantee that Rossmark builds stand the test of time in design, quality and service.
    Our home design has not dated, and
    … More we have only needed to do simple maintenance.
    We recently needed advice regarding a minor issue with the roof after heavy storms and Glen (the original supervisor of our build) was at our home within the hour to assist! An absolutely amazing team - so glad we didn't knock down and rebuild as I doubt the kit home companies would give this level of service 20 years down the track! My husband always said, 'There's Australian Standards and then there's the Rossmark Standard'. It's true - best in the business and the ultimate professionals.
    Melinda Wilde ★★★★★ 3 months ago
  • Matt Earl and his team gave us our dream home. They worked hard to convert our humble 1950s cottage to an American colonial revival style house. Matt’s patience, attention to detail, creative problem-solving combined with his top quality … More and very experienced team turned our vision into reality at a reasonable, value for money cost.
    I first found out about Rossmark by talking to neighbours in the street that had done work by them. I was surprised by how enthusiastically they spoke of Rossmark and how much they loved their new house. Their renovation involved extended and tricky negotiations with the council because of the heritage protection order for our area and Matt negotiated very effectively on behalf of his clients. Above all, Matt and his staff were very nice people to deal with. I decided that this was the kind of business I wanted to do our renovation.
    Matt worked patiently with us for 18 months, developing a floor plan that met the needs of our whole family - then we began building. Our renovation was demanding and difficult because there were many American heritage features that were time-consuming to plan and install such as tessellated floor tiles, extensive wood trim and panelling, pedestal bathroom sinks, the claw-footed bath, custom built cabinetry, a heritage ceramic kitchen sink and detailed cornices. The creative and stylish design that Matt developed paid off enormously as we feel like we are on holidays when we are at home and the design has encouraged our family to interact a lot more. Thank you so much Rossmark for giving us what money can’t buy!
    The house is holding up very well in the 12 years since this renovation was completed because of the quality of the workmanship. Matt continues to provide advice on maintaining our house by giving us ideas and the contact details of reliable contractors. If you want top quality work and peace of mind, Rossmark is the company for your next building project.
    Robin Walton ★★★★★ 5 years ago
  • 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 … More 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.
    paul lunniss ★★★★★ 3 years ago
  • We first approached Rossmark to discuss a significant re-design and renovation of our family home in late 2020. They were our first choice based on the recommendation of friends and their ability to offer a full package of services from … More design through to DA approval, project management and construction.
    From the first, we found Rossmark to be honest, responsive and generous with their time and experience. Our first contact was with Matt who listened to our concerns about the existing rooms and flow of the house and came up with an ingenious design.
    After receiving DA approval, Peter, Glen and the team took over the project management and construction of our job. They managed every aspect of procurement and trades and, despite being shut down for a period due to COVID and the associated difficulties with obtaining materials, still managed to bring in our job on time. We were kept up-to-date with every aspect of the job throughout the entire construction period and nothing was too much trouble for them.
    The quality of work was exceptional and the final product is even better than we could have hoped for. We are so happy that we decided to undertake this renovation as it has made a considerable difference in the way we use our home and, with Rossmark doing all the heavy lifting, the entire experience was a pleasure. We would highly recommend Rossmark for any residential building project.
    Alexandra Poole ★★★★★ 3 years ago
  • Rossmark did a superb job.
    Every member of the team, from the CEO to the youngest apprentice, was a pleasure to deal with. Throughout the entire process, they were responsive, supportive and always available. An outstanding family owned
    … More and operated business doing great things in The Shire and beyond. We wouldn’t hesitate to use them again for any future projects.
    Jodie H ★★★★★ 2 years ago
  • 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 … More and we couldn’t of asked for anything more. The end product is fantastic and has provided so much more room for our family.
    Darren Smith ★★★★★ 3 years ago
  • We are so happy with the incredible top floor extension to our property, the space Rossmark has created has really benefited our family unit. The quality, finishes and overall process was impeccable. We highly recommend Rossmark and the … More high standard of service they provide.
    Emma Imer ★★★★★ 2 years ago
  • Peter, Glen and the whole team from Rossmark were a pleasure to deal with and very professional though out the home extension process. We are very happy with the new space and a big thank you to the team.
    Daniel Gildea ★★★★★ 2 years ago
  • Peter, Glen and the whole crew were absolutely amazing. Right from the start everyone was professional and respectful yet always friendly. Their organisation and streamlined processes proved invaluable, particularly when they were able … More to keep our project moving along even in the midst of lockdown. The Rossmark team proved we made the right choice.
    Lyndall Nairn ★★★★★ 3 years ago
  • 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.
    Mark Young ★★★★★ 3 years ago