NSW · Sutherland Shire
Home builders in Bonnet Bay
A builder’s licence is permission to trade. It is not a solvency test. 2,361 construction companies entered external administration last financial year, more than any other industry in the country — and no regulator checks whether the one quoting your Bonnet Bay job can still pay its framer on Friday. We run the Four-Point Builder Check™: licence with NSW Fair Trading, insurance sighted, still trading, and genuinely working in Bonnet Bay. Then one name and the reasoning behind it — or a straight no.
- Costs you nothing, ever
- No obligation to use them
- Details never sold
Why this is harder than it looks in Bonnet Bay
- Bonnet Bay is not a generic block
Mapped here: 1 overlay families, 1 heritage record, bushfire-prone land. A builder who prices the house and discovers the site is a builder whose quote moves — and the variations land on you, not on them. The ones who work Bonnet Bay regularly already know which of these reach which streets.
- A current licence tells you nothing about solvency
Every one of the companies behind that figure held a valid licence the day before it failed. The certificate on the wall says they are permitted to build. It does not say they can pay their framer on Friday.
What building in Bonnet Bay actually involves
Bonnet Bay asks you to buy a bigger block and then permits a smaller house on it. The minimum lot size band mapped here is 800–899 m², against 550–574 m² in Alfords Point, Bangor and Barden Ridge. The floor space ratio is 0.50:1, where all three of those carry 0.55:1. Both controls pull in the same direction, and that combination is the defining fact about building in this suburb.
What the two numbers do together
Take the same 800 m² of land in each case. At a floor space ratio of 0.50:1 it supports in the order of 400 m² of gross floor area, counting every level. At 0.55:1 the same 800 m² supports about 440 m². So the larger minimum lot does not translate into a proportionally larger house — the tighter ratio takes part of it back. If you are moving here from one of the neighbouring suburbs with a plan already drawn, that plan may well fit the land and fail the ratio, and the ratio is the control people check last.
The zone is the reason: C3 Environmental Management
Bonnet Bay is mapped C3 Environmental Management, the second of these four suburbs to sit outside the R series entirely. Where C4 Environmental Living treats low-impact housing as a normal outcome on land with environmental value, C3 is written around protecting and managing that value, with development limited to what is compatible with it. A dwelling house is commonly permissible, but it is assessed against objectives that are about the land rather than about housing — and the generous lot size with the restrained floor space ratio is that intent expressed as arithmetic.
Near-total uniformity, which puts the weight on the zone
Across 1.13 km² — the smallest of the Sutherland Shire suburbs we have published — the numeric controls barely move. The 8.5 m maximum height covers 44 of 45 mapped parcels. The floor space ratio covers 43 of 46. One lot size band applies. There is effectively no variation to discover, which means the numbers are not where the uncertainty in a Bonnet Bay project lives. The variable is how a scheme sits against the C3 objectives, and that is a judgement made on the specific site rather than a figure you can look up in advance.
Nine acid sulfate features on the smallest footprint
Nine acid sulfate soil features are mapped across 1.13 km². In absolute terms that is fewer than Bangor's ten; per square kilometre it is comfortably the heaviest concentration of these four Sutherland Shire suburbs. The mapping follows low-lying and historically estuarine ground, which is consistent with a small waterside suburb. What it means for a build is a question of depth: the class mapped on the parcel sets how far down you may go before consent and a management plan for the excavated material are required.
One heritage item, and it is archaeological
A single heritage feature is recorded in Bonnet Bay, and it is an archaeological item rather than a building. That distinction matters for a rebuild: an archaeological item is assessed on what earthworks might disturb below the surface, so it attaches to footings, pools and service trenching rather than to what the finished house looks like. One item across the suburb makes a clear result likely, but it is still an address check.
Working through a Bonnet Bay block
Start with the floor space ratio, not the land size — 0.50:1 is the control most likely to break a plan brought in from a neighbouring suburb. Then confirm the C3 zone and what its objectives ask of a scheme on this particular site. Then the acid sulfate class against the depth you intend to excavate. Then the single heritage item. The height limit and the lot size band are near-uniform here, so they are the least likely of the controls to hold anything up.
What you are dealing with in Bonnet Bay
Six things a builder prices differently. This is the suburb-level picture — which of them reaches your block is an address check.
- Bushfire Mapped BAL assessment; glazing, decking and screening spec.
- Flood Not checked Held in each council's own Flood Planning Map rather than in a statewide layer
- Heritage 1 record Impact statement; limits demolition, form and materials.
- Slope Not checked Published by individual councils rather than as a statewide layer
- Soil Acid sulfate Below trigger depth: management plan, treatment, disposal.
- Density controls 1 zone · 8.5m · 0.5:1 What may be built, and how much. Set parcel by parcel.
What is mapped in Bonnet Bay
Read from NSW ePlanning Spatial Viewer, not a summary of it.
- Council
- Sutherland Shire Council
- Planning scheme
- Sutherland Shire Local Environmental Plan 2015
- Overlays mapped here
- Heritage — Item - Archaeological
- Residential zones mapped
- C3 Environmental Management
- Bushfire-prone land
- Mapped in this suburb
- Mine subsidence district
- Not in one
- Heritage items mapped
- 1
- Minimum lot size
- 800-899 m² minimum (most common of 1 minimum-lot-size bands mapped in the suburb)
- Typical height limit
- 8.5m
- Floor space ratio
- 0.5:1
- Acid sulfate soils
- Mapped in this suburb
Planning data from NSW ePlanning Spatial Viewer (CC BY 4.0), read 2026-09-20. Suburb-level, not a report on your block — check your address on the NSW Planning Portal.
Bushfire categories mapped here
Worth knowing before you budget
- Building height
The most common maximum building height mapped here is 8.5m (44 of 45 mapped parcels). No other height control covers a meaningful share of the suburb.
- Floor space ratio
A floor space ratio of 0.5:1 applies to most of the mapped parcels here (43 of 46). On an 800 m² block that is about 400 m² of floor area, every level counted.
The mechanism
The Four-Point Builder Check™
Every one of them is something you could do yourself. What we sell is that it has been done, dated and published — and repeated on a schedule, because a check that happened once is worth nothing.
- 01 · Licence
Looked up on NSW Fair Trading's own public register — number, class and status, with the date we looked recorded.
- 02 · Insurance
Public liability plus whatever warranty or indemnity cover NSW requires. Sighted by us, not self-declared on a form.
- 03 · Still trading
Solvency re-checked on a schedule. A licence stays current right up until the day a company fails.
- 04 · Works in Bonnet Bay
Confirmed with the builder against the suburbs they genuinely service — not a radius drawn on a map.
How this works
- 01Tell us about the build
Six questions, about three minutes.
- 02We match it against Bonnet Bay
Against the 1 residential zone mapped here, 1 overlay families, bushfire-prone land — and against which builders hold the right licence class for it, have done it before, and actually work under Sutherland Shire Council.
- 03One recommendation, with the reasoning
Not six quotes to sift. We negotiate on your behalf; you deal with the builder directly. Builders pay us, only once you sign.
What you get, and what it costs you
- One builder, not a list
We read your brief against what is actually mapped in Bonnet Bay — 1 overlay family, 1 heritage record, bushfire-prone land — and against which builders hold the right licence class, have built under these constraints before, and genuinely work under Sutherland Shire Council. You get one name and the reasoning in writing.
- Or a straight no
The same business day you get one of two things: our recommendation, with the reasons — or a plain email saying we have not got a builder in Bonnet Bay we would put our name to yet, and what we are doing about it. No drip campaign, no being passed around.
- It costs you nothing, ever
The builder pays us, and only if you sign with them. You are never charged, and you are never under any obligation to use the builder we name. How the fee works.
We are not a builder, we do not manage your build, and we do not hold your money.
Fair questions before you send anything
- You have no builders listed in Bonnet Bay yet. What use is that?
A fair question, and the honest answer is that a list is not what we do. We do not publish a builder until the licence is checked, the insurance is sighted and we have confirmed they are still trading — so an empty list here means we have not finished that work in Bonnet Bay, not that we cannot help. Send the brief and we go and find one for your block. If we cannot, you get told that, the same day, rather than being added to a mailing list.
- Why not just get three quotes myself?
You can, and for a simple job you probably should. The difficulty on a block in Bonnet Bay is that quotes are only comparable when they assume the same things — and with 1 overlay family mapped here, two builders can price the same house against different assumptions about the site and both be quoting honestly. Sorting that out is the part we do.
Builders serving Bonnet Bay
Questions about building in Bonnet Bay
Why is the minimum block size larger in Bonnet Bay?
The band mapped here is 800–899 m², against 550–574 m² in Alfords Point, Bangor and Barden Ridge. It goes with the C3 Environmental Management zone, which limits development to what is compatible with the land's environmental value.
How much house can I build on an 800 m² block here?
At the 0.50:1 floor space ratio mapped across most of the suburb, in the order of 400 m² of gross floor area, every level counted. The same block in the neighbouring suburbs carries 0.55:1, which allows about 440 m² — so a plan drawn for those suburbs may not fit here.
What does C3 Environmental Management allow?
A dwelling house is commonly permissible, but the zone is written around protecting and managing the land's environmental value, with development limited to what is compatible with it. A scheme is assessed against those objectives as well as against the numeric controls.
Are the planning controls consistent across Bonnet Bay?
Almost entirely. The 8.5 m height limit covers 44 of 45 mapped parcels, the floor space ratio covers 43 of 46, and one lot size band applies. The uncertainty in a project here sits in the zone assessment rather than in the numbers.
Does Bonnet Bay have heritage constraints?
One heritage feature is recorded, and it is archaeological rather than a building. That means it is assessed on what excavation might disturb below ground — footings, pools, service trenches — rather than on the appearance of the finished house.
What to ask a builder about a block in Bonnet Bay
Each one is here because of something mapped in Bonnet Bay. Take them to whoever quotes.
- 01
Confirm the zone at the address is C3 Environmental Management — and what it permits without a planning permit.
- 02
What bushfire attack level have you built to in Bonnet Bay before, and what did it change in the glazing, decking and screening?
- 03
Have you had an application through Sutherland Shire Council where a heritage control applied, and how long did the assessment take?
- 04
What height control is mapped at this address? It is set block by block in Bonnet Bay, not suburb-wide.
Local landmarks in Bonnet Bay
- Koolangarra Reserve
- Lakewood City Reserve
- The Glen Bushland Reserve
- Bilba Reserve
- Bonnet Bay Reserve
- Nixon Place Reserve
No catch
What you are agreeing to
- Nothing. There is no contract with us, no account to create, no card, and nothing to cancel.
- No obligation to use whoever we recommend. Take the name and the reasoning and do what you like with it, including nothing.
- No phone number needed to start. Give us one if you want to be called; otherwise we write.
- One builder contacts you, not six. And only after you have seen the brief and said yes.
- Your details go to that builder and nobody else. Never sold, never auctioned, never shared with a panel.
- If we have nobody in Bonnet Bay, we say so. That is a real answer we give, and the empty builder list above is the proof we mean it.
Building in Bonnet Bay?
Licence checked with NSW Fair Trading, insurance sighted, still trading, genuinely working in Bonnet Bay. If we cannot find one worth recommending, we will say so.
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