About A.D.Practique

  • Adding Design PractiqueA.D.Practique is a building design and consultancy business.
  • 20 years Residential design experience
  • 30 years Residential building experience
  • 300 successful applications to council
  • 100’s of completed building projects (see portfolios)
  • Member of the Green Building Council of Australia
  • Designers of comfortable, affordable, low energy using housing.
  • We prepare and submit construction drawings, not concepts.

A.D.Practique is a building design and consultancy business. We are a small family firm that specialises in the design and documentation process and after council approval we assist in helping you choose your builder.

Adding Design Practique was established by Will Hegarty in 1995.

Adding Design Practique's principal work is in Residential design.

We design Alterations and Additions for existing houses, these consist of Ground Floor Alterations and Additions and First Floor Additions.

We design New Houses, Holiday houses, Motels and Multi Unit Holiday Developments.

We also design Duel Occupancy Housing and most forms of Medium Density Housing including Town House developments and specialist housing for the older demographic.

We design Granny Flats, Garages with Studios, Offices, Storage and Carports.  We will also design Swimming Pools, Cabanas and Outdoor Entertainment Areas.

Work History

Our work history is over 300 designs submitted to Sydney councils over the past twenty years. At any one time we would have half a dozen jobs in design another half dozen in council and always something being built. We have an enviable approval rate.

We do not subcontract our work out.

Over the years we have learnt to work with rather than against planning departments. We are experienced at using the political process that is available to everyone in expediting difficult applications.

 We are respected by the planning departments and builders. We are known for designing additions that are that are well drawn and documented.

We have many clients for whom we have done repeat work. We would be happy to give a list of these people and their contact details.

Our design philosophy is to create practical, attractive designs that have flow and are comfortable to live in. The second part of the philosophy is to create designs that add value to the property. We are proud of the sales record of our designs that have shown substantial financial gains to the owners when they have reluctantly sold.

The word Practique reflects the design ethos of the business that is concerned with creating practical, simple to build designs. Practic is the third or the forgotten sciences the others being theory and logic. Practic is the art of doing.

Practique is simple design

The principal Designer Will Hegarty has worked in the building industry for thirty five years. The last twenty years as a Residential Designer. The company designs New Homes, First and Ground floor Alterations and Additions Granny Flats, Dual Occupancies, Duplexes, Garages with Studios, Offices Storage and Carports.

The aim of the business is to add design, good design to the home that is currently on the drawing board. This is better reflected in the concept of comfortable living. Whether it is a small single storey terrace or a large inter war bungalow we believe that the owners by giving us their brief are entrusting us with the responsibility of creating a comfortable living environment for themselves and their immediate family.

In our Australian climate we believe a comfortable living environment should if possible consist of:

  • Indoor, outdoor living where the family living area is close to the garden and connected by an Under Cover Dry Area
  • A comfortable living or family room
  • A well appointed kitchen closely aligned to the first two areas
  • A family dining area not a separate dining room
  • Laundry/ bathroom and separate bathroom or rooms
  • Independent light and airy bedrooms
  • And if possible a lounge or second living room
  • Plenty of convenient well appointed, well designed storage.
  • Garage, garages or off street parking


Architectural servicesIf space and budget permit then you could add a study, music room or theatre room. Although none of these really fall within the absolute necessary requirements for comfortable living.

Adding Design Practique has a proven design philosophy and a long history of producing successful good looking designs. Take the time to have a look at some of our finished work and use the links to contact us.