Maraylya Home Extension Builder — Live In, Build On
Buildana extends homes across Maraylya 2765 while you stay in place. Mixed rural-era structure, The Hills Shire Council rules, weatherproofing during build — all managed locally from Fairfield.
HIA Member
MBA NSW0476 300 300Quick Answer
A home extension in Maraylya costs $150,000–$600,000+. Rear extension from $150K, second-storey addition from $300K. Buildana manages design, The Hills Shire Council approvals, and construction under one fixed-price contract.
Maraylya Home Extensions — Fixed Price
A home extension in Maraylya is a rural project on rural land. This is acreage country, 2 to 10ha-plus RU2 holdings, so space is never the constraint, and adding to the equestrian and lifestyle homesteads here is about compliance and siting rather than squeezing a footprint. Owners at a $2.5M to $6M-plus range are improving properties they intend to keep.
Acreage brings stacked rules. Bushfire is significant across the area, so an RFS assessment and BAL-rated construction apply to most work, riparian setbacks govern anything near the Cattai Creek tributaries, and Hawkesbury Sandstone means excavation is priced by test dig. A large ground-floor addition almost always makes more sense than going up out here, and where it sits on the land matters as much as how it is designed.
What I would check first on a Maraylya holding: the BAL rating and RFS path, the riparian setbacks, and where the addition should sit against the sandstone. Those govern the feasibility.
We build these fixed-price, licence HBL 487805C. Begin with a full site constraints review and we will run it.
Buildana manages the complete home extension process in Maraylya — 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 Maraylya from $150K
- The Hills Shire Council DA and CDC approvals managed
- Ground floor, rear and second-storey additions
- M — structural engineering included
- Mixed rural-era homes assessed for extension suitability
- Connect new to existing — clean, matched finish
- 6-year structural warranty
- Free design consultation — near No rail (rural) station
Reviewed by Oliver Alameri
Licensed Builder (NSW 487805C) · Master of Property Development · PhD Student · Building across Western Sydney since 2010
Rural land, rural rules
This is acreage country, 2 to 10ha-plus RU2 holdings, so space is never the constraint. Adding to the equestrian and lifestyle homesteads is about compliance and siting rather than squeezing a footprint.
Owners in the $2.5M to $6M-plus range are improving properties they mean to keep for the long haul.
Stacked constraints
Bushfire is significant, so an RFS assessment and BAL-rated construction apply to most work, riparian setbacks govern anything near the Cattai Creek tributaries, and sandstone means excavation is priced by test dig.
A large ground-floor addition almost always makes more sense than going up, and where it sits on the land matters as much as how it is designed.
Home extension builder in Maraylya — key facts
- Suburb
- Maraylya, NSW 2765
- Council / LGA
- The Hills Shire Council (The Hills)
- Primary zoning
- R2 Low
- Typical lot size
- 2–10ha+ (acreage)
- Soil class
- M
- Median house price
- $2.5M–$6M+ (acreage)
- Home era
- Mixed rural
- 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.
Cost Guide
| Item | Estimated Range |
|---|---|
| Small rear extension (up to 30m²) | $95,000 – $190,000 |
| Medium rear/side extension (30–60m²) | $190,000 – $340,000 |
| Large ground-floor extension (60–100m²) | $340,000 – $530,000 |
| Second-storey addition (60–120m²) | $290,000 – $580,000 |
| Wrap-around (ground + 1st floor) | $530,000+ |
| Structural engineering & tie-in | Included |
Prices are indicative for Western Sydney (2025). Actual costs depend on site, specifications, and approvals.
How It Works
From First Call to Final Key
Everything that has to be right before we touch the ground. Free consultation at your Maraylya home. We inspect the existing structure, check The Hills Shire Council's controls, measure available space, and discuss what you need. You get a clear scope, budget range, and timeline before committing. Two design moves are usually on the table: match the existing house so the extension reads as original, or contrast with it so the new section is clearly modern. Both work — choice is aesthetic, and we'll show 3D renders of both before you commit.
⏱The Maraylya construction phase. Fixed price, programmed, supervised. CDC (10–15 business days) or DA through The Hills Shire Council depending on scope. Structural engineering, BASIX, and all documentation prepared and lodged. Construction Certificate obtained. Construction phase connects new to existing — footings, frame, roof tie-in, waterproofing at junction, internal fit-out and external finish. Staged works minimise disruption to your daily routine in Maraylya.
⏱The job isn't done when the site's clean; it's done when you have keys, certificates and warranties. Final inspection focuses on the integration: paint blend, flooring transitions, ceiling height, junction waterproofing, sound transmission. The extension shouldn't feel bolted on — it should feel like the house was always meant to be this size.
⏱Our Team
Oliver Alameri
Founder / Director / Builder · MPropDev · PhD Student
Ahmad Alameri
Accounts Manager
Claire Wendell
Project Manager
Estimate Your Build Cost
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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
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Costs, approval pathway and fixed-price contract detail for every other build type we deliver in Maraylya 2765. The Hills Shire Council regulations and local controls are covered on each page.