Principal Plans Building Design
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Our purpose is to assist builders in the production of beautiful, functional and affordable houses for all families in Australia. Through our work in building design we are also proud to be a part of the creation of communities that are prosperous, environmentally and socially sustainable and that provide wonderful homes for all its citizens.

We provide efficient, cost effective and high quality design and drafting products to residential builders of small homes, providing a valuable service to the construction industry while also providing work to designers and draftspeople in Australia.

Principal Plans was started by Henriette Cosgrove to also support other designers. Our aim is to provide a friendly, professional and secure environment where designers from all walks of life can find opportunity and compete on a level playing field - where they can show off their work, improve their skills, earn money, build their portfolio and have fun.

Services Provided
Architectural Drawings, Building Design, Custom Homes, Energy-Efficient Homes, Floor Plans, House Plans, Site Planning

Areas Served
Bells Creek, Meridan Plains, Sunshine Coast, Caloundra West, Little Mountain, Brisbane, Queensland, Maroochydore, Peregian Springs, Minyama, Parrearra, Aura, Caloundra, Maleny, Kings Beach, Moffat Beach, Golden Beach, Currimundi, Warana, Kawana Waters, Palmview, Bli Bli

Certifications and Awards
2015 BDAQ State Award for Best Small Lot Design
2016 BDAQ National Award for Best Small Lot Design
2018 BDAQ Regional Award for Best Small Lot Design
Contact: Henriette Werner
Location: 38 Banks Crescent
Bells Creek, Queensland 4551
Professional Information:
License Number: QBCC 1243700
Typical Job Costs: $2,000 - $25,000
- Building design only (no construction) - For private clients (builders get discounts) - New residential dwellings, duplexes, townhouses up to two storeys - From initial sketch to concept plans to working drawings - Complimentary initial consultation - Costing customised to each project
Commented: What kind of siding material is that side of house? This material is by James Hardie and is called Scyon Matrix.
in Photo Questions  
Commented: Hi, What colour is the white render? Hi Chelsea, I believe this white colour my be Dulux Whisper White. Keep in mind that the colour you see depends a lot on the photo quality as well as your computer screen. It may look totally differen...
in Photo Questions  
Commented: Could you please supply the brand name of the basin? Hi Cathy, I believe it is a Caroma basin but I'm not sure of the exact model. The photo is a little distorted so it's hard to tell what the proportions actually are. Have a look here https://www.carom...
in Photo Questions  
Commented: Bench tops? Splashback? Cupboards?? Hi Nicky, thanks so much for your comment. Let me get back to you with some answers...
in Photo Questions  
Commented: Bench stools Hi Freezr64 The home owner purchased these stools. I'm sorry I don't know where they got them from or what wood they are. If I find out I'll post it for you here.
in Photo Questions  
Principal Plans Building Design uploaded 14 photos to: Coomboo Lane