• To Rossmark Pty Ltd
Rossmark Pty Ltd is an award wining company specialising in the design and construction of,

-First floor and ground floor additions and extensions
-Complete architectural new homes - Concept to completion
-Home renovations 
-Home additions
-Home extensions

Based in the Sutherland shire and established in 1975 we have gained a reputation for quality design, construction and customer care having serviced our local communities such as Cronulla, Caringbah, Kirrawee, Miranda, Menai, Gymea, Lugarno, Penshurst, Mortdale, Oatley, Earlwood, Hurstville, mascot, Carlton and many more in the St George and Sutherland districts. We are one of the few companies that can say 100% of our clients that we have built for are satisfied and would build with us again as measure from our survey program established in 2000.

Please visit our case study section of our website to gain an understanding of the holistic experience we offer; from concept design, council approval, selections and specification to construction and handover.

Reviews of Rossmark Pty Ltd

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  • Vijay&Blanca Newbie   1 review
    Rossmark has been truly impressive. We have used them to make substantial modifications to our home, including addition of an upper floor, with the work lasting nearly six months. From the very first meeting it was evident that Matthew Earl was very professional and pleasurable to deal with, meticulous in evaluating the options and giving us very detailed information on the products he uses as part of his quote. Once work commenced we could see how well organised and thorough they were, kept us fully appraised of how things were progressing, and even rectified, at their own time and cost, several issues that were revealed in the existing house. In the end they finished work ahead of schedule, and delivered an excellent quality finish that I am very impressed with. I maintained a blog of week-by-week progress, and am happy for others to see it to get an idea of how things went. All-in-all, I have no hesitation in giving Rossmark the highest possible recommendation, and have every intention to use them again to do further work on our house.

    2 months ago - 29/01/2014

  • Nadgey Newbie   1 review
    Ross mark are exceptional builders and professional to deal with in ever way. We have recently converted an unused space ' the museum' as it was known into a master bedroom, WIR and ensuite. This renovation was completed well before it's designated finishing date, looks amazing and the project manager, site project manager and tradespeople were extremely professional and trustworthy. What more could you ask for when undertaking the dreaded task of renovating! Oops I failed to mention value for money and very tidy builders ..... Yes they exist. This renovation was without stress. Thank you Matt and team, you were an absolute pleasure to work with and we are already saving for the next Reno !

    3 months ago - 20/01/2014

  • FMTSKT Newbie   1 review
    100% highly recommended- used Rossmark for our extension from design, council approval to build. Honest, reliable, professional- great aussie family business. Recieved weekly updates on progress, job completed on time, fantastic staff- very happy customer would use again.

    7 months ago - 19/09/2013

  • Ross Wallis Newbie   1 review
    We didn't know what a good builder could do until we used Rossmark. We had a consultation with Matt and he facilitated the design of our first floor extension. My wife was at home with our second child and the behaviour, courtesy and cleanliness of the tradesmen made the experience seamless and with minimal impact on the family. The external areas were kept very safe and we appreciated the environmental focus of the team (recycling etc). Whilst Matt and the office team do an excellent job, Glenn and his tradesmen work together brilliantly and apply sound project management to the job. After the extension was completed, we waited about a year and then used Rossmark for the installation of our in-ground pool. Again, a project that would have been difficult for us to manage as full time workers with a young family - we had absolutely confidence that the house, garage and yard would be safe and secure in Rossmarks hands. The combined efforts of the team have turned our house into a beautiful home which we will enjoy for many years to come. Thanks Rossmark.
  • Henry8 Newbie   1 review
    We would like to highly recommend Rossmark Pty Ltd.
    They will do everything from the design to completion. Matthew, who is the Boss, is more than a builder he is an architect.
    When we asked him to completely redo our en suite he designed it personally for us e.g. the tap ware for the shower, height of vanity all the other fittings that go on the walls were placed according to our height & preference E.g. towel rails, vanity height. Also he changed the shower head from one wall to another
    .All the trades that worked in the house were very professional. Best of all, price was fixed. The only adjustment was if we spent more or less than the budget as all items were itemised. Rossmark does not just replace old for new, Matthew redesigned our en suite for us, making it look much larger. We can highly recommend them and you can see the photos in the face book page.
  • themaxanator Newbie   1 review
    Bottom Line..Rossmark are good, damn good.
    I operate my own Company and know how competitive any Industry is. We could not be more impressed with the quality of the extension, the regular updates, Matthew's initial and ongoing advise but that should be expected in any building work. The Rossmark difference was the attention to the SMALLEST detail..picking nails and debris from the grass ..we were impressed. The tradesman, the contractors were brilliant. They were very understanding that we were still living in the premises ( with 4 kids, 2 dogs and a cat ! ) and they took time out during the day to answer any questions we had and even suggested alternatives, which showed they that cared about the job.
  • Dan Fanuli   2 reviews
    Truly built in a professional, outstanding and customer focused manner. Matthew right from the planning stage throughout our top floor addition and on completion showed exceptional focus to guarantee our happiness. The staff and tradesman are outstanding in follow up and quality workmanship, we had an easy transition and total satisfaction and would not hesitate to build with Rosssmark again, my wife and I now live happily ever after!
  • Andrew Benfield Newbie   1 review
    Our renovation went better than we could have hoped. From our first meeting with Matthew through to the completion of our house we were thoroughly impressed. The design put forward by Matthew was excellent. ALL the builders and tradesmen who came to work on the house were professional and happy to discuss concerns and our endless questions. We had a small leak during a weekend rain storm (always rains heavily when the roof is off) and three of the team came at 8am Saturday to fix the problem. The end result looks fantastic. I liked the price agreed contract which meant we spent only what we budgeted for. As you can see we were most impressed by every aspect of the project with Rossmark and can honestly say they are one company we would recommend to anyone renovating or building.
    Andrew and Jodie Benfield
  • Naomi Spiller Newbie   1 review
    We have just finished our second storey extension through Rossmark, and are absolutely thrilled with the result. We had to live in our house while the reno's where taking place and the Rossmark team made sure that we always felt comfortable while still making sure things got done on time. I believe in using local companies, so the choice wasn't hard, Rossmark has been around in the Shire for a long time and is a family owned company. We would recommend Rossmark without hesitation.

    Naomi & Grant Spiller
    Sylvania Heights
  • kay_woods Newbie   1 review
    To all at Rossmark "thank you" for my stunning bathroom renovation. The manner in which the process was conducted, the help I received in selecting the P.C. items, the quality workmanship and the cleaning up at the end of each day by the tradesmen was truly outstanding. I am so thrilled.

Opening Hours for Monday:

8:30 AM-5:00 PM

Opening Hours for Tuesday:

8:30 AM-5:00 PM

Opening Hours for Wednesday:

8:30 AM-5:00 PM

Opening Hours for Thursday:

8:30 AM-5:00 PM

Opening Hours for Friday:

8:30 AM-5:00 PM

Opening Hours for Saturday:


Opening Hours for Sunday:

Additional Information

By Appointment (Only)

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