Frequently Asked Questions

Building costs in Sydney typically range from $2,200 to $3,500+ per square metre depending on the build type, site conditions, and finishes. A standard 4-bedroom home on a flat site starts around $550K–$700K. We provide fixed-price contracts so you know the exact cost before work starts.

Yes. Every Buildana quote is a fixed-price contract. The price you agree to is the price you pay — no hidden costs, no provisional sums for standard items, no surprises at handover.

Our quotes include all construction works, council fees, engineering, site preparation, landscaping allowance, and BASIX compliance. We itemise everything so you can see exactly what you are paying for.

A knockdown rebuild in Western Sydney typically costs $450K–$850K+ depending on size, demolition complexity, and finishes. This includes demolition ($25K–$50K), new build, and all approvals. See our full cost guide at /insights/knockdown-rebuild-cost-sydney.

A duplex in Western Sydney starts around $700K–$1.2M for a pair of 3–4 bedroom dwellings. The cost depends on whether it is attached or detached, Torrens title or strata, and the finish level. See our duplex cost guide at /insights/duplex-build-cost-sydney.

A standard single-storey home takes 8–12 months from slab to handover. Double-storey homes take 10–14 months. Knockdown rebuilds add 4–8 weeks for demolition. We provide a detailed construction timeline at contract signing.

Our process runs in clear stages: Free consultation → Site assessment → Design coordination → Fixed-price quote → DA or CDC approval → Construction → Practical completion → Handover. You get a dedicated project manager and weekly progress updates throughout.

A Complying Development Certificate (CDC) is typically approved in 10–20 business days. A full Development Application (DA) takes 40–90+ days depending on the council and project complexity. We handle all submissions and council correspondence.

We follow progress payments linked to construction milestones — typically: deposit, slab, frame, lock-up, fix-out, and completion. Each claim matches verified work completed on site. No payments in advance of work done.

A DA (Development Application) goes through your local council and suits complex projects or heritage areas. A CDC (Complying Development Certificate) is faster and is assessed by a private certifier against state-wide codes. We advise which pathway suits your project.

Yes. We manage the full approval process — site surveys, planning reports, BASIX certificates, engineering, and council or certifier submissions. You do not need to deal with council directly.

Most residential lots over 450sqm in NSW can have a secondary dwelling up to 60sqm under complying development rules. Specific rules depend on your zoning, lot width, and flood/bushfire status. We assess your property and advise on feasibility.

In NSW, R3 Medium Density Residential zones are the most common for duplexes. Some councils also allow dual occupancy in R2 Low Density zones under specific lot size and frontage requirements. We check your property zoning as part of our free consultation.

We build across Greater Western Sydney including Fairfield, Liverpool, Parramatta, Penrith, Camden, Campbelltown, Blacktown, and surrounding areas. We also take on projects across broader Sydney for the right fit.

Yes. Buildana holds NSW Builder Licence 487805C, is a member of the HIA and MBA NSW, and carries all required insurance including Home Building Compensation Fund coverage for residential projects.

All Buildana builds come with the statutory 6-year structural warranty and 2-year non-structural warranty under NSW Home Building Act. We also run a 12-month defect rectification period after handover.

Yes, through our variation process. Any change request is documented with a clear cost and timeline impact before proceeding. You approve or decline each variation in writing — no surprises.