
Georges Heights Home Builder — Custom Homes, KDR, Duplex
Licensed NSW builder (HBL 487805C) · Fixed-price contracts · Mosman DA + CDC managed in-house
Georges Heights is the elevated ridge between Balmoral and Clifton Gardens — former military land, now a mix of restored heritage homes, Federation cottages and contemporary builds on 500–1,000m² blocks. Heritage Conservation Areas cover several streets. Sandstone-dominant soil. Sydney Harbour National Park boundary east at Middle Head.
Mosman Council controls planning across Georges Heights, with R2 Low Density / R3 Medium pockets as the dominant zone and a duplex minimum of 650m² where dual occupancy applies. Soil sits at M (sandstone ridges) / H to E (harbour fall), and most homes here date from 1900s–1950s + restored military buildings — so demolition, slab and structural assumptions all need to be set against that, not a generic Sydney average.
Council
Mosman Municipal
Median price
$4.5M–$8.5M
Build cost (mid-spec)
$3,000–$4,000/m²
Typical lot
500–1,000m²
Soil class
M
DA timing
14–20 wks
Builder perspective
Building in Georges Heights — what we actually look at first
The honest version of "what does it cost to build in Georges Heights?" starts with reading the lot — M (sandstone ridges) / H to E (harbour fall) soil drives the slab system, R2 Low Density / R3 Medium pockets drives what you can put on it, and Mosman Council, NSW's most heritage-and-foreshore-controlled residential municipality drives how long approval takes. Local controls sit with Mosman Council — 14–20 weeks for a single-dwelling da — heritage and foreshore referrals are routine when the documentation lands clean and no third-party referral agencies are engaged. Granny flats are the quiet workhorse build type in Georges Heights — the SEPP pathway is faster than a full DA and the rental yields hold up against a $4.5M–$8.5M median. Soil at M (sandstone ridges) / H to E (harbour fall) on 500–1,000m² lots drives the footing system — waffle-pod where reactivity allows, stiffened raft where it doesn't, piered slab where neither does. We're Buildana — licensed (HBL 487805C), insured, Fairfield-headquartered, and one of a handful of builders in Sydney still running every job on a true fixed-price contract. Georges Heights feasibilities take us about an hour of desktop work — title, zone, controls, soil, indicative cost range. We do them for free for owners genuinely planning a build.
Georges Heights build context
The data we use to feasibility-check a Georges Heights lot before quoting.
- Council
- Mosman Municipal
- Postcode
- 2088
- Primary zoning
- R2 Low Density / R3 Medium pockets
- Typical lot size
- 500–1,000m²
- Predominant home era
- 1900s–1950s + restored military buildings
- Soil class (AS 2870)
- M (sandstone ridges) / H to E (harbour fall)
- Duplex minimum lot
- 650m²
- Median price band
- $4.5M–$8.5M
- Granny flat rental
- $800–$1,200/week
- Train station
- North Sydney (5 km)
- Build cost (mid-spec)
- $3,000–$4,000/m² (Rawlinsons 2026)
Why owners build with Buildana in Georges Heights
Same six facts on every contract — we just write them down so you can hold us to them.
- Licensed NSW builder (HBL 487805C) with HIA fixed-price contracts — provisional sums kept to a minimum and itemised when used.
- Mosman Municipal we project-manage the approval, not just the build — design, certifier, BASIX, council, all sequenced by us.
- BASIX, structural certification and any referral agency work (RFS, Heritage, Sydney Water) handled in-house — you sign one contract.
- Asbestos clearance handled by SafeWork NSW licensed contractors — pre-1990 fibro stock priced into the contract.
- Demolition through handover on a fixed contract — costing benchmarked to Rawlinsons, not back-of-envelope.
- Anchored on the amanah principle — the scope on contract day is the scope at handover. Local landmark: Headland Park & Middle Head. Train: North Sydney (5 km).
Georges Heights build economics
Indicative cost ranges for a Buildana build in Georges Heights, benchmarked against the Rawlinsons Australian Construction Handbook 2026 Sydney baseline and adjusted for the local cost profile (Georges Heights sits above the Sydney median by 35%). Every figure is a starting point — a real feasibility shifts it by site condition, brief and finish spec.
| Build type | Indicative range | Spec assumptions |
|---|---|---|
| Single-storey custom home (200m² GFA, mid-spec) | $3,000–$4,000/m² × 200m² | Brick veneer, ColorBond roof, mid-tier joinery and finishes — Rawlinsons 2026 Sydney medium-spec baseline. |
| Double-storey custom home (300m² GFA, mid-spec) | $3,000–$4,000/m² × 300m² | Two-storey brick veneer, light-frame upper, ColorBond or tile, mid-spec finishes — first-floor adds engineering and access loadings. |
| Premium custom home (350m²+, full-brick or rendered) | $4,000–$6,000/m² × 350m²+ | Full-brick or rendered structure, hardwood or stone external, custom joinery throughout — Rawlinsons high-spec baseline. |
| Detached duplex (combined 350m² GFA) | $4,000–$4,000/m² combined | Twin-slab on separate footings or party-wall slab; independent services; BCA Vol 2 acoustic separation. |
| Knockdown rebuild (200m², mid-spec, includes demo) | $3,000–$4,000/m² × 200m² + $0–$0K demo | Demolition (incl. SafeWork-licensed asbestos clearance), geotech, slab, frame, full mid-spec finish. |
| Granny flat (60m², Class 1a) | $250,000–$360,000 turnkey | Class 1a secondary dwelling, full kitchen + bathroom, BASIX-compliant, SEPP-pathway CDC where lot qualifies. |
Source: Rawlinsons Australian Construction Handbook 2026 (Sydney section), adjusted for Georges Heights cost profile via Buildana's internal suburb cost-adjustment matrix. Figures exclude land, professional fees, council contributions and FF&E.
Buildana services in Georges Heights
All six core services delivered across the Mosman — each one priced against Georges Heights's specific site context, not a generic Sydney baseline.
Knockdown Rebuild
We tear down, dig the right footings for the soil profile, then rebuild — same crew the whole way through.
Georges Heights knockdown rebuild approachDuplex
Detached duplex on the lots that allow it — twin homes, independent driveways, independent BASIX, often Torrens-title at completion.
Georges Heights duplex approachGranny Flat
Secondary dwellings under SEPP — 60m², usually CDC, often no neighbour notification needed.
Georges Heights granny flat approachCustom Home
Design and construct under one fixed-price contract — the architect and the builder are on the same team from concept.
Georges Heights custom home approachExtension
Extensions that look like the home grew that way — not a clear before/after line at the addition boundary.
Georges Heights extension approachRenovation
Renovation done by a licensed builder, not a generalist — structural changes, waterproofing and finishes all in one contract.
Georges Heights renovation approachApproval pathway in Georges Heights
Mosman Council, NSW's most heritage-and-foreshore-controlled residential municipality.
In Georges Heights, the approval pathway depends on whether the design ticks every box of State Environmental Planning Policy (Exempt and Complying Development Codes) 2008. If it does, a Complying Development Certificate (CDC) through a private certifier is faster — effectively not applicable — almost every mosman residential rebuild goes through merit da, no neighbour notification. Where the design pushes setbacks, height or site-coverage limits, we lodge a Development Application (DA) with Mosman Council. 14–20 weeks for a single-dwelling DA — heritage and foreshore referrals are routine. DA application fees fall in the $2,500–$4,200 base for a class 1a residential da band. Buildana runs both pathways in-house. Knockdown rebuilds on standard R2 Low Density / R3 Medium pockets lots are usually CDC; duplex on 650m²+ blocks is usually DA unless it's a battle-axe configuration.
CDC pathway
Private certifier · Effectively not applicable — almost every Mosman residential rebuild goes through merit DA · no neighbour notification. Design must comply exactly with the Codes SEPP.
DA pathway
Mosman Municipal merit assessment · 14–20 weeks for a single-dwelling DA — heritage and foreshore referrals are routine · DA fees $2,500–$4,200 base for a Class 1a residential DA. Used where the design pushes a code limit.
Section 7.11 / 7.12 developer contributions in Georges Heights: Typically $12K–$28K per dwelling.
Georges Heights site considerations
Costing a Georges Heights build properly means pricing site conditions first, finishes second. Soil class M (sandstone ridges) / H to E (harbour fall) sets the slab type — that's a $15K–$45K swing on its own. Trees protected under Mosman Council's tree preservation order create exclusion zones around root protection areas; engineered building setbacks can remove 5–10% of buildable footprint on some lots. Pre-1990 1900s–1950s + restored military buildings stock means asbestos clearance under a Class B licence — non-negotiable, priced upfront. The number we quote on day one is the number you pay at handover.
Soil & footings
Class M (sandstone ridges) / H to E (harbour fall) reactivity drives waffle-pod, stiffened raft or piered slab — engineered to a real geotech, not a desktop guess.
Demolition
Pre-1990 1900s–1950s + restored military buildings stock means SafeWork-licensed asbestos clearance — priced into the contract upfront, with the clearance certificate before slab pour.
Flood & bushfire
Flood risk: very low. Bushfire risk: moderate. Heritage exposure: high. We map your lot against each before quoting.
Local overlays the Mosman Municipal planner will check first
- Heritage Conservation Areas (most of Mosman)
- Foreshore Scenic Protection Area (Sydney Harbour, Middle Harbour)
- Tree preservation (canopy retention)
- Bushfire prone land (bushland-foreshore interface)
Recent builds nearby
Buildana projects in the Mosman
We work continuously across Mosman — single-storey customs, double-storey rebuilds, side-by-side duplex on R2 lots that comply with Mosman Municipal's DCP minimum frontage, granny flats on SEPP secondary-dwelling pathways. Most projects start with the same conversation we'd have about your Georges Heights site: title, zone, slope, frontage, soil. Then design. Then fixed-price contract.
Completed builds
Browse the Buildana project gallery — customs, duplex, KDR, granny flat — completed across Sydney.
See galleryMosman hub
Full Mosman builder hub — every suburb we work in, every service, council pathway notes.
Open Mosman hubGeorges Heights area guide
The lifestyle and neighbourhood guide for Georges Heights — schools, transport, market, character.
Read area guideGeorges Heights build FAQs
The questions we get asked most often on a first Georges Heights site walk.
- What soil class is typical in Georges Heights 2088?
- Georges Heights sits in the M (sandstone ridges) / H to E (harbour fall) reactivity range based on AS 2870 site classifications we've worked with in the suburb. That drives slab design — generally waffle-pod or stiffened raft. We never assume the class; every Buildana build commissions a geotechnical investigation before slab engineering. The geotech report is yours to keep, regardless of which builder you use after.
- What does it cost to knock down and rebuild in Georges Heights?
- End values in Georges Heights sit in the $4.5M–$8.5M range based on recent sales. A typical knockdown rebuild — demo, asbestos clearance, geotech, slab, frame, full mid-spec finish for a 200m² single-storey — runs $3,000–$4,000/m² × 200m² + $0–$0k demo as a Rawlinsons-aligned 2026 baseline. We benchmark every line to the Rawlinsons Australian Construction Handbook, not back-of-envelope figures. Send through your block address and we'll run a proper feasibility against what's actually achievable on the lot.
- Do you do extensions and renovations in Georges Heights?
- Yes — ground-floor additions, second-storey adds, full-house renovations, kitchens and bathrooms in Georges Heights. The complication on 1900s–1950s + restored military buildings housing stock is that you can't price an extension off the plans alone — we pre-investigate the existing slab, frame, roof tie-in and wet-area waterproofing before quoting. Surprises during demolition are the most common reason renos blow their budget; we eliminate that by inspecting first.
- How long does a DA take with Mosman Council?
- 14–20 weeks for a single-dwelling DA — heritage and foreshore referrals are routine. CDC through a private certifier is the alternative where the design complies with the Codes SEPP — effectively not applicable — almost every mosman residential rebuild goes through merit da. Council DA application fees fall in the $2,500–$4,200 base for a class 1a residential da range. Buildana lodges either pathway and runs all RFI responses through to determination.
- Why does Georges Heights cost different from a generic Sydney average?
- Georges Heights sits 35% above the Sydney metropolitan median build cost. Drivers are typically site access (narrow streets, restricted parking), tighter character controls requiring better materials and finishes, and trades pricing the suburb's expectation of finish quality.
- How long does a custom home build take in Georges Heights?
- From contract signed to handover, a single-storey 4-bedroom custom home in Georges Heights typically takes 9–11 months on a CDC pathway, or 12–14 months if the design needs a DA through Mosman Council. Add 4–6 weeks for double-storey. Pre-construction (design, engineering, BASIX, approval, contract) runs in parallel and adds another 8–16 weeks before site start. Buildana sequences both phases so the design effort and the approval effort don't sit waiting on each other.
- Can I build a duplex in Georges Heights?
- Duplex feasibility in Georges Heights depends on lot size and zoning. The minimum lot for dual occupancy under Mosman Council's DCP is 650m², and R3 Medium Density lots in the suburb can support attached duplex or townhouse configurations. We run a feasibility check on title, zone, area, frontage and slope before quoting — no point designing what won't approve.
- What's the granny flat pathway in Georges Heights?
- Granny flats in Georges Heights are usually built under State Environmental Planning Policy (Affordable Rental Housing) 2009 — secondary dwellings up to 60m², CDC pathway, no DA required on most compliant R2 Low Density / R3 Medium pockets lots. Typical rental return is $800–$1,200/week. The block needs minimum 450m², a primary dwelling already on it, and compliance with side/rear setbacks. Where the lot doesn't comply with SEPP, we lodge a DA with Mosman Council.
Nearby Mosman suburbs we build in
Adjacent Mosman suburbs covered by the same Mosman Municipal approval pathway and a similar site-cost profile.
Ready to talk about your Georges Heights build?
Free site feasibility, honest cost framing against $3,000–$4,000/m²/m² baseline, fixed-price contract. Mosman Municipal pathway managed in-house — no surprise variations.