Design & Construct Sydney — One Team from First Sketch to Final Key in Western Sydney
One team, one contract, zero gaps. Custom floor plans, council approvals, and construction under single-point accountability.
HIA Member
MBA NSW0476 300 300Quick Answer
Design & construct combines design and building under one team, one contract. Typical cost: $2,200–$3,800/m² including design, approvals, and construction (Rawlinsons-benchmarked). 15–20% faster than separate architect and builder. Buildana delivers D&C across Sydney with fixed-price certainty.
One Team Designs It. The Same Team Builds It.
Design and construct eliminates the gap between designer and builder. Buildana provides single-point accountability — our integrated team handles custom floor plan design, council approvals, value engineering, and construction under one contract. No finger-pointing between architect and builder. No miscommunication. No redesign costs when the builder says "that can't be built."
Every floor plan is site-responsive: designed around your block's orientation, natural light, traffic flow, setbacks, and lifestyle needs. We design for buildability from day one — which means faster approval, fewer variations, and a fixed price you can trust.
We deliver design & construct across Sydney — including Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs — for custom homes, duplexes, granny flats, townhouses, and commercial builds. Our local knowledge of each council's LEP and DCP requirements means designs are approval-ready, not just conceptually interesting.
- Integrated design and build team
- Custom floor plans tailored to your site
- Natural light and ventilation optimisation
- Internal traffic flow and spatial planning
- Value engineering during design phase
- Single contract and point of contact
- Fixed-price certainty from design stage
- DA/CDC management included
- 15–20% faster than separate architect/builder
Design & Construct vs Traditional Model
The most important decision before you start: one team or two? Here's how the two models compare in practice.
| Factor | Design & Construct | Architect + Separate Builder |
|---|---|---|
| Price certainty | Fixed price at contract | Price unknown until tender |
| Timeline | Faster — no tender process | Longer — tender adds 2–4 months |
| Accountability | Single point — Buildana | Split between architect and builder |
| Design flexibility | High — design team works within budget | Can be high — but budget may blow |
| Who owns the risk | Buildana | Shared — disputes possible |
| Communication | One team, one contact | Multiple parties to coordinate |
| Cost | Design included in build cost | Architect fee $15,000–$50,000+ separate |
What's Included in Buildana's Design & Construct Package
Design
- • Site analysis and orientation study
- • Multiple concept floor plan options
- • Elevations and façade options
- • 3D photorealistic rendering and visualisation
- • Material and finish selections
Documentation
- • Full working drawings
- • BASIX certificate
- • Engineering design coordination
- • Soil report coordination
- • NCC compliance review
- • All council/certifier documentation
Approvals
- • CDC or DA lodgement
- • Private certifier engagement
- • Council liaison and RFI management
- • Construction Certificate
Construction
- • Full fixed-price build from slab to handover
- • Stage-based milestone updates
- • Quality inspections at every stage
- • Defect-free completion and OC
How Long Does the Design Phase Take?
Realistic timelines based on Buildana's project experience across Western Sydney:
Concept Design
Site visit, design brief, 2–3 floor plan options presented with indicative pricing
Design Development & Documentation
Selected concept refined, engineering, BASIX, working drawings, full documentation
Approval (CDC pathway)
After lodgement — private certifier assessment and determination
Approval (DA pathway)
After lodgement — council assessment, possible RFIs and neighbour notification
Total Pre-Construction (CDC)
From initial briefing to construction commencement
Total Pre-Construction (DA)
From initial briefing to construction commencement
Have a question about your project?
Talk to our team — free site assessment and fixed-price quote.
How It Works
From First Call to Final Key
We visit your site, review zoning/FSR/overlays, understand your lifestyle and budget, and establish the design brief. This is the foundation — we don't skip it.
⏱Floor plan concepts developed based on site analysis, orientation, and your brief. Typically 2–3 options presented with indicative pricing. You choose the direction.
⏱Selected concept refined with detailed floor plans, façade design, 3D renders, structural engineering, BASIX assessment, and full compliance documentation.
⏱DA or CDC lodgement with all required documentation. We manage the full approval process including council RFIs, consultant coordination, and determination follow-up.
⏱Detailed scope, specifications, and fixed-price contract based on the approved design. No surprises. Variations only for client-requested changes.
⏱Stage-based construction with regular progress reporting, quality inspections, and defect-free handover. One team from first sketch to final key.
⏱Our Team
Oliver Alameri
Founder / Director / Builder
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
Use our free calculator to get an instant cost estimate for your project
Cost Guide
| Item | Estimated Range |
|---|---|
| Granny flat design & construct | $150,000 – $250,000 |
| Single dwelling design & construct (per m²) | $2,200 – $3,800 |
| Duplex design & construct (total) | $800,000 – $1,400,000 |
| Townhouse project design & construct | $1,500,000 – $6,000,000+ |
| Design phase only (if proceeding) | Included in D&C fee |
| Design phase only (standalone) | $15,000 – $40,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Ready to take the next step?
Free consultation — no obligation, no pressure.
Frequently Asked Questions
“Buildana built our granny flat in just 12 weeks. Fast approvals, great communication, and a beautiful final product. Highly recommend.”
Fatima Al-Rashid
Liverpool, NSW
We Build Across Sydney
Buildana builds across greater Sydney — with deep roots in Western Sydney's Fairfield, Liverpool, Cumberland, Canterbury-Bankstown, and Blacktown LGAs.
Last updated: 1 July 2025
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