NSW · Upper North Shore
Home builders in Hornsby
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 Hornsby 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 Hornsby. 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 Hornsby
- Hornsby is not a generic block
Mapped here: 3 residential zones, 4 overlay families, 108 heritage records, 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 Hornsby 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 Hornsby actually involves
Hornsby contains a town centre, and the mapped controls say so plainly. Height runs from 8.5 m to 41 m, and the mapped floor space ratio reaches 3:1. Neither figure covers much of the suburb — the 8.5 m control appears on just 9 of 76 parcels, the 3:1 ratio on 8 of 33 — which is the point: this is not one place with one standard.
A suburb with a CBD in it
Most suburbs on this site return a dominant height and a dominant ratio, and the advice is to test a brief against them. That advice does not work here. A 41 m control and a 3:1 ratio describe commercial-scale buildings; an 8.5 m control describes a house. Both exist within 8.38 km², and the mapped layers return so many different values that no single figure represents the suburb.
For anyone building a house the practical consequence is twofold. Your own envelope has to be read at the parcel, because the suburb number is meaningless. And the land around the block matters more than usual — a house site near the centre may sit within sight of land zoned for substantially taller buildings. Check both on the NSW Planning Portal spatial viewer.
Thirteen reservations, six of them for local roads
Six parcels are reserved for public recreation, six for local roads, and one for infrastructure. The local road reservations are the ones to check carefully: road reservations generally take a strip of frontage rather than a whole parcel, and frontage carries the driveway crossing, the service connections and the setback measurement.
In a centre that is growing, road widenings are exactly the kind of thing that gets reserved. Run the search against the specific title before an offer.
One hundred and eight heritage records
A substantial listing count, consistent with a suburb that has been a town rather than a subdivision for a long time. The question for a project is binary — does a listing attach to this title — and where it does, it governs what may happen to that building. On a knockdown rebuild that answer decides the project, so it belongs before an offer rather than before a design.
Fifteen bushfire features, and eight creeks
The mapping covers buffer, vegetation category 1 and vegetation category 2 across 15 features. Eight named watercourses run through the area, including Berowra Creek, Calna Creek and Old Mans Creek — the suburb runs from a built-up centre out to bushland gullies.
That range means the bushfire answer varies more than in a uniformly suburban area. A block near the station may sit entirely outside the mapping while one toward the gullies carries a category 1 interface and a steep Bushfire Attack Level. It is a parcel-level question, not a suburb-level one.
A thin lot sample, and one acid sulfate feature
The single mapped lot band — 500–524 m² — rests on eight parcels, far too few to describe 8.38 km². Treat it as evidence that compact subdivision exists somewhere in the suburb rather than as a standard. The subdivision answer has to come from the title.
One acid sulfate soil feature is mapped: low odds, binary at an address, and relevant only below the trigger depth.
What to establish on a Hornsby block
The height and ratio at the parcel, because the suburb figures mean nothing across a range this wide. Then the zoning and height on the surrounding land, since the centre's controls reach 41 m. Then the local road reservations against the title. Then the heritage check. Then a parcel-level bushfire assessment if the block runs toward a gully. Flood sits with Hornsby Shire Council rather than centrally.
What you are dealing with in Hornsby
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 108 records 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 3 zones · 8.5m What may be built, and how much. Set parcel by parcel.
What is mapped in Hornsby
Read from NSW ePlanning Spatial Viewer, not a summary of it.
- Council
- Hornsby Shire Council
- Planning scheme
- Hornsby Local Environmental Plan 2013
- Overlays mapped here
- Heritage — Item - General · Heritage — Item - Landscape · Heritage — Conservation Area - General · Heritage — Item - Archaeological
- Residential zones mapped
- R2 Low Density Residential
R3 Medium Density Residential
R4 High Density Residential - Bushfire-prone land
- Mapped in this suburb
- Mine subsidence district
- Not in one
- Heritage items mapped
- 108
- Minimum lot size
- 500-524 m² minimum (most common of 1 minimum-lot-size bands mapped in the suburb)
- Typical height limit
- 8.5m
- Floor space ratio
- varies by block
- Land reserved for acquisition
- Public Recreation · Local Road · Infrastructure
- 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
No single height control covers much of Hornsby: the most common is 8.5m, on 9 of 76 mapped parcels. Height here is set block by block. Other controls that apply to a meaningful number of parcels run up to 41m — generally centres and larger sites, not a house block.
- Floor space ratio
Floor space ratio varies across Hornsby: the most common mapped value is 3:1, on 8 of 33 parcels. It has to be read at the address.
- Land reserved for acquisition
Parts of Hornsby are reserved for future public acquisition — public recreation, local road, infrastructure. A reservation is mapped to specific land, so whether it touches your block has to be checked at the address.
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 Hornsby
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
Seven questions, about three minutes.
- 02We match it against Hornsby
Against the 3 residential zones mapped here, 4 overlay families, bushfire-prone land, 108 heritage records — and against which builders hold the right licence class for it, have done it before, and actually work under Hornsby 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 Hornsby — 3 residential zones, 4 overlay families, 108 heritage records — and against which builders hold the right licence class, have built under these constraints before, and genuinely work under Hornsby 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 Hornsby 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 Hornsby 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 Hornsby, 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 Hornsby is that quotes are only comparable when they assume the same things — and with 3 residential zones 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 Hornsby
Questions about building in Hornsby
Why do the controls in Hornsby vary so much?
The suburb contains a town centre. Height runs from 8.5 m to 41 m and the mapped floor space ratio reaches 3:1 — commercial-scale figures — while an 8.5 m control describes a house. No single number represents the suburb, so the parcel is the only meaningful level to read them at.
Can I use the suburb figures to test my brief?
No. The 8.5 m control appears on just 9 of 76 mapped parcels and the 3:1 ratio on 8 of 33, so neither is a majority and neither describes the typical block. Read both at your own parcel.
What should I check about the surrounding land?
The zoning and height mapped on it. A house site near the centre may sit within sight of land zoned for substantially taller buildings, and with controls reaching 41 m that is a materially different proposition from a suburb where everything is capped near 9 m.
Why do the local road reservations matter?
Six parcels carry one. Road reservations generally take a strip of frontage rather than a whole parcel, and frontage carries the driveway crossing, service connections and setback measurement. In a growing centre, road widenings are exactly what gets reserved — so run the search against the title before an offer.
Is the bushfire risk consistent across Hornsby?
No. Eight creeks run through the area and the suburb goes from a built-up centre out to bushland gullies, so a block near the station may sit entirely outside the mapping while one toward the gullies carries a category 1 interface and a steep rating. It is a parcel-level question.
How reliable is the minimum lot size figure?
Not reliable at all. The single mapped band of 500–524 m² rests on eight parcels, far too few for 8.38 km². It is evidence that compact subdivision exists somewhere in the suburb, not a standard — the answer has to come from the title.
What to ask a builder about a block in Hornsby
Each one is here because of something mapped in Hornsby. Take them to whoever quotes.
- 01
Which of the 3 residential zones mapped in Hornsby covers this address, and what does that one permit that the others do not?
- 02
What bushfire attack level have you built to in Hornsby before, and what did it change in the glazing, decking and screening?
- 03
Have you had an application through Hornsby 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 Hornsby, not suburb-wide.
Local landmarks in Hornsby
- Lisgar Gardens
- Storey Park
- Florence Cotton Park
- Reddy Park
- Hornsby Park
- James Park
- Rosewood Oval
- Holman Park
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 Hornsby, we say so. That is a real answer we give, and the empty builder list above is the proof we mean it.
Building in Hornsby?
Licence checked with NSW Fair Trading, insurance sighted, still trading, genuinely working in Hornsby. If we cannot find one worth recommending, we will say so.
Find my builder — free →Free · about 3 minutes · no obligation · your details are never sold
Named watercourses in Hornsby
8 named watercourses are mapped across Hornsby. At that density the buildable ground is largely what sits between them, and the gullies they run in set the fall — which decides earthworks long before the floor plan does.
- Berowra Creek
- Calna Creek
- Cockle Creek
- Grimsons Gully
- Hornsby Creek
- Jimmy Bancks Creek
- Larool Creek
- Old Mans Creek
Read from the NSW Water Theme, which maps gazetted watercourses only. A constructed channel or a stormwater drain is not in this list and can still carry water across a block.