Buying
How to Buy a Development Site
What makes a good site, where to find them, and how to avoid paying too much for your first development block.
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A practical guide for landowners on the Central Coast and Lake Macquarie who want to understand what their land can do.
You own land. Maybe you have been in your home for years and the block feels larger than you need. Maybe you inherited a property and are wondering whether to hold, sell, or do something with it. Or perhaps you bought with development in mind and you want to understand what is actually possible before spending money on consultants.
This guide is for landowners asking: can I subdivide my block, build a dual occupancy, put a duplex on the back, or develop my backyard into something that earns? It will not give you a definitive answer for your specific property, but it will give you the framework to have a much sharper conversation with a planner or with us.
Development potential is not determined by what you want to do. It is determined by what your council's planning rules allow, and whether your land physically supports it. The key factors are:
Zoning is the single biggest determinant. Under the relevant Local Environmental Plans (LEPs), most residential land in the Central Coast and Lake Macquarie falls into one of three zones:
You can check your zoning using the NSW Planning Portal's zoning tool or by contacting your council directly.
Each LEP sets minimum lot sizes for different development types. For dual occupancy in R2 on the Central Coast, the minimum is typically 600m² with at least 15m frontage. For R3 multi-dwelling, minimum lot sizes vary but 800m² is a common starting point for three dwellings. A battleaxe block adds complexity: the access handle reduces usable area and council often applies additional rules around the handle width and shared boundaries.
A steeply sloping block increases construction cost materially. What looks like a $1.2m build on a flat block can become $1.6m or more on a challenging slope, once retaining walls, stepped footings, and drainage are priced in. North-facing, relatively flat land in an R3 zone is the sweet spot.
Access to sewer is non-negotiable for multi-dwelling development. If your block is on a septic system, developing your backyard or splitting it into multiple lots requires connection to the council sewer network, which can be expensive or, in some rural fringe areas, simply not available. Stormwater discharge points also need to be identified early.
Even if your zoning and size are right, overlays can kill a site. The most common are:
In practice, maximum dwellings on R2 land is two. A dual occupancy can be attached (duplex development, sharing a wall) or detached (two separate structures on one lot). Torrens title subdivision of the two lots is possible with council consent, provided the resulting lots meet minimum size requirements. Secondary dwellings (granny flats) are also permitted in R2, but cannot be separately sold as Torrens title.
R3 opens the door to multi-dwelling housing. Depending on lot size and council controls, three to five dwellings is a realistic outcome for well-configured R3 sites in the 800m² to 1500m² range. FWG's first development, Elan at 82 Station Street Bonnells Bay, is a real-world example: a 946m² R3 block delivering three Torrens title residences. R3 zone subdivision is where most development feasibility conversation starts for serious investors.
R4 allows residential flat buildings. This is a more capital-intensive and complex category. If your land is zoned R4, the opportunity is significant but the planning process, build cost, and financing requirements are also substantially higher. It is worth a detailed feasibility assessment before drawing any conclusions.
Central Coast Council administers two LEPs: the former Gosford LEP 2014 (now Council-consolidated) and the former Wyong LEP 2013, which govern land in the southern and northern parts of the local government area respectively. Council is in the process of consolidating these into a single LEP, so checking current controls carefully is important. Dual occupancy in R2 is generally permitted with development consent. Multi-dwelling housing in R3 is permitted with consent. Council's Development Control Plans (DCPs) set specific rules on setbacks, site coverage, landscaping, and car parking.
The former Wyong LGA, now administered under Central Coast Council, includes suburbs like Wyong, Warnervale, Toukley, Bateau Bay, and Budgewoi. Dual occupancy is permitted in R2. The northern half of the LGA has a mix of R2 and R3 zones along key transport and activity corridors. Minimum lot sizes for dual occupancy under the Wyong DCP are generally 600m² with a 15m frontage requirement.
Lake Macquarie operates under the Lake Macquarie LEP 2014. The council area encompasses suburbs from Morisset in the north through to Toronto, Warners Bay, and Belmont in the south. Lake Macquarie has a strong mix of R2 and R3 land, particularly around the lake fringe and along main corridors. The council has been historically responsive to well-prepared DAs but timeframes can vary. Multi-dwelling housing requires R3 zoning, minimum lot sizes apply, and the council's DCP sets specific design standards for new dwelling types.
This is the right question, and the answer depends on the feasibility gap between two numbers.
The first number is the end value: what the completed dwellings would sell for in today's market. If you develop your backyard into a three-bedroom townhouse in Bonnells Bay, and similar properties are selling at $750,000, that is your end value for that dwelling.
The second number is all your costs: the land cost (or opportunity cost if you already own it), construction, architectural and engineering fees, council fees, building certifier, legal, GST on development margin, and holding costs across the project timeline. A typical boutique development of two to three dwellings on the Central Coast might run 24 to 36 months from site acquisition to settlement.
The gap between those two numbers is your return. If end values are high relative to construction costs, development is financially worthwhile. If the gap is thin, the project carries risk without proportionate reward.
What this means for your land: your block as a development site is worth more than it is as a plain residential block, but only if the numbers work. A skilled buyer's agent or development advisor can run a preliminary feasibility in a matter of hours to give you a directional answer.
Not every block that looks good on paper is worth developing. The following are common deal-breakers that emerge in due diligence:
If you are seriously considering whether to develop your block, the practical next steps are straightforward:
FWG offers a no-obligation site assessment for landowners considering development on the Central Coast and Lake Macquarie. We will give you a clear, direct read on your block's potential, what it might yield, and whether it is worth pursuing further.
We work with a select number of landowners and development partners. If you want a considered, direct assessment of your block's potential, start with a conversation.
Begin a ConversationIn R2 Low Density Residential, you can generally build a dual occupancy and then apply to subdivide the two lots into Torrens title, provided the resulting lots meet minimum size requirements. You cannot subdivide into three or more lots in R2. Multi-dwelling subdivision requires R3 or higher zoning.
A battleaxe block is a lot that sits behind another property, accessed via a narrow strip or handle. They are common in established suburbs where landowners subdivided rear yard areas. Development is often possible on battleaxe blocks, but the access handle reduces usable land area, and council applies specific rules about handle width, shared boundaries, and access. Construction logistics can also be more complex and costly.
From initial planning to completion, a typical dual occupancy or small multi-dwelling project takes 18 to 36 months. This includes time for DA preparation and lodgement (1 to 3 months), council assessment (4 to 12 months), construction documentation, tendering, and the build itself (12 to 18 months depending on scope and builder availability).
Not necessarily. Depending on the configuration, it is sometimes possible to remain in your existing home while a second dwelling is built at the rear. However, construction access, noise, and site safety should all be considered. Some landowners prefer to relocate temporarily, particularly during more intensive construction phases.
What makes a good site, where to find them, and how to avoid paying too much for your first development block.
Read GuideA plain-English walkthrough of the development application process for Central Coast, Wyong, and Lake Macquarie councils.
Read GuideAnswers to the most common questions about development, buyer's agents, zoning, and site selection.
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