Over 20 years experience
in building design.

Building designer, Roman Marjanac, has worked in the building industry for over 30 years gaining valuable, practical building knowledge. Since 1998, his focus has been on the custom design of renovations and new homes in Sydney and beyond.

Have questions about your building design project? Call Roman for the answers.


Do you need architectural plans or the complete service from concept design to building approval?

New Building Designs

We have the experience, building knowledge and expert consultants required to make your dream home a reality. 

Alterations & Additions

From a kitchen renovation to major alterations & additions, we have the expert building knowledge required to make your project a success.

Sustainable Design

Through thoughtful and efficient building construction, we build sustainable homes with reduced negative impacts on the environment.



A new home design will usually be one of the largest financial investments you will ever make, so you need to get it right.

Some of the core considerations in designing a new home are client requirements, planning codes, the orientation of the site, the slope of the site and suitable construction techniques.

We can guide you through the entire process to achieve a design that suits you, gets planning approvals and is ready to build.


From a kitchen renovation to major alterations & additions, these need to be planned meticulously to achieve outstanding results.

Starting with the existing layout of the house, we can design your renovation or alterations & additions to make the best use of all the available space, create a better connection between spaces and achieve results you could only dream of.



All projects are designed with passive solar design principles integrated from the design concept stage to create a comfortable, efficient, livable home.

In NSW, a Basix certificate is required for both alterations & additions and new homes.

Introduced by the NSW Government, Basix, the Building Sustainability Index, ensures homes are designed to use less potable water and be responsible for fewer greenhouse gas emissions by setting energy and water reduction targets for houses and units.


Here's what just a few of my delighted clients say about my skills and service

“When I first came to Roman Marjanac for his help on my first building project I had no idea what I wanted. Roman went straight to work on my concept and came up with the perfect design for my concept. As a result I have chosen to return to Roman many times and Roman is now helping me working on my sixth project.”

Roger Luong

Canley Heights

“Roman Marjanac, trading as RM Design & Consulting has completed four jobs for our group over the past two years. Roman has completed our work within the times required, at competitive prices and in a very professional and competent manner with the required attention to detail and with constructive suggestions to improve the outcome. We have no hesitation in continuing to work with Roman and in recommending his services to others.”

Luigi Zaniol

Director, Truman Zaniol & Associates Pty Ltd

“We approached Roman from RM Design & Consulting, to provide design drawings for a ground floor extension and first floor addition to our existing house. From the first meeting Roman was wonderful to work with, because he listened to what we wanted and yet still provided design input and feedback to how best it would work and most importantly what would likely meet the council's requirements. Within a very short time frame we had our detailed plans for council and it passed through the DA process with no issues.

If we ever renovate again we will definitely call on Roman.”

Scott & Lillian Drummond


“We just wanted to thank you for all your time and dedication towards our project. We are very happy with the end result and the ease of getting our plans approved through council. From a design aspect you really integrated everything we were after whilst aiming to keep build costs down through minimising excavation and possible damage to our neighbour's adjoining wall. We are very excited to start the project and are very grateful for all your advice and expertise.”

Alicia & Kien


“Roman is a true professional who was happy to provide ideas and his knowledge and assistance all the way through our build. A laidback guy who made us feel at ease."

Christian Nicolussi


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