Building Design & Drafting in Croydon

Qualified building designers for your home improvement or commercial project
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Designing Beautiful Buildings Since 1990

The director of Design20, Glenn McNamara, has over three decades of experience in the subdivisions and unit developments, and has worked on many properties in The Maroondah, Yarra Ranges & all throughout the state. When you work with Design20, you get:

Customer care

You’ll experience a very high level of service when working with us. Throughout the entire process, we’ll communicate with you so you know what’s happening every step of the way. We’ll also take into consideration your feedback, and we’re happy to address any concerns.

A start-to-finish service

Designing your project is just the beginning: our staff members are happy to liaise with council and other consultants, as well as organise all that is required to obtain the relevant permissions/permits. If you have recently received a building order from council regarding illegal works, we can even sort this out for you.


We are a member of Design Matters, as well as Registered Building Practitioners. You have complete peace of mind knowing that you are working with professionals who take pride in our trade – we’ll never cut corners.

Let’s get started on your building design today

With many qualified designers ready to answer your questions on the spot, you are assured honest and expert advice on the best options to suit your design and drafting needs. We’ll work with you to maximise your project within the planning zones and overlays that influence how your land can be developed – all while taking into consideration your budget and timeframe.
When you’re ready to get started, please contact us for your free consultation.

With over 30 Years of experience

From the initial consultation through to the final concept, you can count on us to transform your unique dreams into reality. Let’s work together to create your ideal design.

Our Services also include

Contact the team at Design 20 with a question, advice on any drafting project, or to speak to any of our six qualified designers about getting started on designing your dream property in Croydon or surrounding suburbs.


Decks / Pergolas


Carports & Garages


Additions / Renovations


Shops, Apartments & Factories


Dual Occupancies


Unit Developments


New Homes





A Leader In The Industry

Whether you’re looking to renovate a part of your home or you want to build a new office for your business, these ideas first need to be put on paper before they can be built. No two properties are the same, so when you’ve got a concept in mind for your home or office space, turn to the experts at Design20.

 Over 400+ Satisfied Customers

A little thankyou to the Design20 team for your second to none service on our project. We received our permit today, thanks to all your help!”

E & T – Croydon

Thanks a lot Libby and Anthony! Really appreciate all the assistance you provided to us to reach to this point. It was pleasure working with you.


Fantastic, thanks so much Libby. And thank you for all your help along the way – you have been a pleasure to deal with. Choosing you guys to do our drafting was the best decision; you have made this first part of our project a breeze! Will definitely send you photos when it’s done (don’t hold your breath though, a DIY renovation with a baby will be interesting (and possibly a bit stupid haha)!) Please pass on our thanks to Glenn and Anthony also.

Emma – Croydon

"First of all I would like to thank you once again for all the great work you did with our house. It is now completed and we are so happy! We have attached a few photos for your viewing. Once again, thank you."


"I used Design 20 for the complete design and working drawing stage of my renovation and extension and could not be happier with the price, the professionalism and more importantly the commitment by all the staff to produce a great product for me…
Cannot wait to show them the finished build now"

RG – Croydon

"Thank you. You have made the beginning of our Home Building journey a very pleasant one so far. Notwithstanding we are sure to cross some hurdles along the way, hopefully not too many, but Jeff and I find your communication to us wonderful."

RM – Healesville

"Pop the champagne! Thanks so much for your and Anthony’s work on this. Now to get the bits and pieces done for the building permit and we’re set! Then the real fun begins! I really appreciate the ongoing support - thank you! 🙂 "

JB – Heathmont

"Many thanks to Glenn, you and everyone else at Design 20 that has been involved with us! Thanks for the fine work and persistence."

BM & KS-M – Surrey Hills

"Looks fantastic we are so pleased with what you have created for us, thank you again for your time today going through and explaining everything."

AL & SL – Chirnside Park

"Thank you very much for your help. We’re really happy with the outcome and were very pleased with the letter that you wrote."

MB – Croydon

"Welcome to the golden mile of Chirnside Park, a stunning showcase of prestige properties of which this home is exemplary. Set on approximately 4 Acres, the 123 SQ home is magnificent (officially recognized as a Blue Ribbon Certified Home by Archicentre). Great presentation Glenn ????"

DF – Doreen

"Those plans are perfect. Let us know when you’re free next for a meeting to discuss the next steps and we can go from there. Thanks for being so efficient. "

JH – Upwey

"Great that looks fantastic."

ST – Healesville

Firstly, let me start by saying a huge thankyou to you all for the amazing work you have done. All the phone calls, the madness of the job – and client (mostly client) and the professionalism of the entire team. I cannot tell you how much it was appreciated. It is now a situation of moving forward and leaving this project at this site on paper. A few opportunities have actually shown their faces with huge potential, so there are several scenarios to contemplate for us. Very exciting. If there is a need for your services with our next project, you are our first contact. Thankyou again to Glenn, Libby, Anthony and Jonathon


Design 20 Office

We are underneath the Croydon cinemas

Get In Touch

Contact us

Lets get started on your dream design today

Design 20 provides all the professional design and drafting services you could need. We will support and guide your project from idea conception through to the builder’s completion and your complete satisfaction. Book a free initial consultation with a design expert in Croydon today. Before dreams can be built they must be designed and detailed; you can trust the experts at Design 20 with your dreams.

Address: 12/3 Hewish Road Croydon VIC 3136

Phone: (03) 9724 9299


Business Hours: Monday -Thursday  8 - 5, Friday 8-12 

A donation from all projects will be made to the Good Friday Appeal