Home Extension Bondi Junction — Design, Approval, Structural, Build
Full-service extensions in Bondi Junction 2022: structural survey of existing 1880s–1960s + apartments home, design, Waverley Council approval, engineering, weatherproofed construction, matched finish to original dwelling.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Bondi Junction costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, Waverley Council approvals, and construction under one fixed-price contract.
Extending Homes in Bondi Junction
A home extension in Bondi Junction separates the spine from the streets — the R4/B4 hub carries value the addition is checked against, while the HCA side streets hold terrace and semi stock that extends with craft.
The side-street work is backwards and precise: rear reworks, courtyards designed hard, party walls assessed, the interchange on foot.
At the $2.2M to $4M median, the addition on the quiet streets is the natural play.
We build these fixed-price, licence HBL 487805C. Get our extension scope, with the zoning checked, before you commit.
Buildana manages the complete home extension process in Bondi Junction — from design consultation and structural engineering through to DA or CDC approval, and fixed-price construction to handover. Extend your home without the stress.
Read our Home Extension Cost Guide 2026 or explore extension approval pathways in NSW.
- Home extensions in Bondi Junction from $150K
- Waverley Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- 1880s–1960s + apartments-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near Bondi Junction (in suburb) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
The hub and its quiet streets
Near the interchange, the R4/B4 value is checked before any addition dollar — while the HCA side streets extend with craft: rear reworks opened to courtyards, beside the busiest amenity in the east.
The honest read decides the spend.
Attached-stock discipline
Party walls are assessed before structural moves, and the period fabric gets licensed handling.
The party-wall assessment and the licensed handling both sit in the quote up front.
Home extension builder in Bondi Junction — key facts
- Suburb
- Bondi Junction, NSW 2022
- Council / LGA
- Waverley Council (Waverley)
- Primary zoning
- R3/R4/B4 mixed
- Typical lot size
- 200–500m²
- Soil class
- M
- Median house price
- $2.2M–$4M
- Home era
- 1880s–1960s + apartments
- Typical price range
- $150,000 – $600,000+
- Typical timeline
- 6–12 months design to handover
- Approval pathway
- CDC for most rear extensions, DA for second-storey
Want a real number for YOUR block — not a generic estimate?
Free site assessment, fixed-price contract, line-itemised quote within 48 hours. No high-pressure sales — just a real builder talking real numbers.
How It Works
From First Call to Final Key
Extension feasibility comes down to two things: what the existing structure can carry, and what Waverley Council will let you build. We assess both at the consultation — no point designing for a second storey if the slab can't take the load.
⏱Extension designed to integrate with your existing Bondi Junction home — matching roof lines, materials, and flow between old and new sections. Floor plans, elevations, and 3D renders.
⏱All approval documentation prepared: structural drawings, BASIX, shadow analysis, stormwater, and statement of environmental effects (if DA). Lodged and managed through to Construction Certificate.
⏱Extension construction takes 3–6 months on average. Footings excavated and poured to match existing depth on Class M soil, frame stand, roof tie-in (most weather-critical phase), lock-up, then internal fit-out at the same standard as the existing house.
⏱Defect-free inspection, OC issued, 6-year warranty on all new work. Junction between old and new sections waterproofed and warranted. Maintenance guide covers care of new and existing areas.
⏱Quality Promise
Our Bondi Junction home extensions connect old-to-new cleanly. Matched brickwork, tied roofline, no awkward transitions.
Cost Guide
| Item | Estimated Range |
|---|---|
| Single-room addition (bedroom/study) | $69,000 – $160,000 |
| Kitchen/living extension | $170,000 – $400,000 |
| Master suite + ensuite addition | $150,000 – $320,000 |
| Second storey (full or partial) | $320,000 – $630,000 |
| Multi-room ground floor wrap | $400,000 – $690,000 |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
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
Still got questions? Talk to Oliver directly.
30-min free call — bring your block, your brief, your budget. We'll map out feasibility, timeline, and realistic cost. No sales pitch.
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
Headquartered in Western Sydney's Fairfield. Active across all 28 metropolitan Sydney LGAs — from Penrith to the Eastern Suburbs, the Hills to the Sutherland Shire.
Last updated: 1 April 2026
Explore Related Topics
Start a Bondi Junction Home Extension
Free design consultation for Bondi Junction 2022. We'll assess your home, design the extension, and provide a fixed-price quote.
Start Your ProjectMore in Bondi Junction
Other Buildana services in Bondi Junction
Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Bondi Junction 2022. Waverley Council regulations and local controls are covered on each page.