WA · Armadale & Byford
Home builders in Oldbury
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 Oldbury job can still pay its framer on Friday. We run the Four-Point Builder Check™: licence with Building and Energy WA, insurance sighted, still trading, and genuinely working in Oldbury. 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 Oldbury
- Oldbury is not a generic block
Mapped here: 7 residential zones, 7 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 Oldbury 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 Oldbury actually involves
Oldbury is 41.09 km² mapped Rural under the Serpentine Jarrahdale Local Planning Scheme No. 3, and no R-Code is mapped across it at all. That is the most important sentence on this page. In Western Australia the R-Code is the control that sets lot size, setbacks and what may be built — and here the scheme map does not carry one.
No R-Code means the answer is somewhere else
An absent R-Code normally means density is set by an endorsed structure plan or by a development approval rather than by the scheme, which is usual in newer estates. It does not mean anything is permitted, and it does not mean nothing is. It means the document governing a particular lot is not the scheme map, and finding out which document applies is the first task — the local government or the developer can confirm it.
The zoning is rural, not residential
Alongside Rural, the scheme maps Industrial development, Public open space, Drainage/waterway and several road reservations. There is no residential zone on the scheme map. A conventional house-on-a-block project is not what this land is zoned for as it stands, and anyone quoting one without establishing the structure-plan position is quoting a suburb that does not exist yet.
A public drinking water source area
A Special control area — Public drinking water source area is mapped. This is the constraint people underestimate most on rural land: it reaches what may be done on the land rather than what may be built on it, and on a lot without reticulated sewer that includes effluent disposal, chemical storage and fill. It sits over the zone and adds its own requirements.
Basic raw materials, and a development contribution
A Special control area — Basic raw material is mapped, which protects access to extractable resources such as sand and gravel and can restrict what is built over them. A Development contribution area No. 2 also applies — a charge attached to the land rather than to the house, established before an offer rather than before a design. A Drainage catchment management area and an Area of landscape protection complete the picture.
Bushfire across four features
Part of Oldbury is inside a designated Bush Fire Prone Area across four mapped features, so a Bushfire Attack Level applies where it reaches a lot. Ted Love Conservation Park sits within the suburb, and one heritage place is recorded.
What to establish on an Oldbury block
Whether a structure plan or development approval governs the lot, since the scheme map carries no R-Code. Then whether the land is in the public drinking water source area, because it reaches effluent and fill. Then the basic raw material and contribution positions. Then bushfire. If the answers do not line up, the honest conclusion may be that this is not a block to build a house on yet.
What you are dealing with in Oldbury
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 mapped Sets a minimum floor level. Flood report first.
- Heritage 1 record Impact statement; limits demolition, form and materials.
- Slope Not checked No Western Australian scheme maps landslip as a special control area, and there is no statewide layer
- Soil Not checked DWER publishes acid sulfate risk as regional map sheets, not one statewide layer we can read a blank from
- Density controls 7 zones What may be built, and how much. Set parcel by parcel.
What is mapped in Oldbury
Read from Landgate SLIP, not a summary of it.
- Council
- Shire of Serpentine-Jarrahdale
- Planning scheme
- Serpentine Jarrahdale Local Planning Scheme No. 3
- Overlays mapped here
- Area of landscape protection · Development contribution area No.2 · Drainage catchment management · Policy areas · Special control area - Basic raw material · Special control area - Development control area/plan · Special control area - Public drinking water source area
- Residential zones mapped
- Drainage/waterway
Industrial development
Local distributor road
Local road
Primary distributor road
Public open space
Rural - Bushfire-prone land
- Mapped in this suburb
- Heritage places mapped
- 1
- Urban growth area
- Yes
Planning data from Landgate SLIP (CC BY 4.0), read 2026-09-19. Suburb-level, not a report on your block — check your address on the WA planning scheme maps.
Overlay families mapped here
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 Building and Energy WA's own public register — number, class and status, with the date we looked recorded.
- 02 · Insurance
Public liability plus whatever warranty or indemnity cover WA 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 Oldbury
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 Oldbury
Against the 7 residential zones mapped here, 7 overlay families, bushfire-prone land, growth-area status — and against which builders hold the right licence class for it, have done it before, and actually work under Shire of Serpentine-Jarrahdale.
- 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 Oldbury — 7 residential zones, 7 overlay families, 1 heritage record — and against which builders hold the right licence class, have built under these constraints before, and genuinely work under Shire of Serpentine-Jarrahdale. 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 Oldbury 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 Oldbury 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 Oldbury, 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 Oldbury is that quotes are only comparable when they assume the same things — and with 7 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 Oldbury
Questions about building in Oldbury
What R-Code applies in Oldbury?
None is mapped on the scheme map. In Western Australia that normally means density is set by an endorsed structure plan or a development approval rather than by the scheme. Establishing which document governs a lot is the first task.
What zone is Oldbury?
Rural, alongside Industrial development, Public open space, Drainage/waterway and road reservations under the Serpentine Jarrahdale Local Planning Scheme No. 3. There is no residential zone on the scheme map.
What is the public drinking water source area?
A special control area sitting over the zone. It reaches what may be done on the land rather than what may be built on it, which on a lot without reticulated sewer includes effluent disposal, chemical storage and fill.
What is the basic raw material special control area?
A control protecting access to extractable resources such as sand and gravel. It can restrict what is built over them, and whether it reaches a particular lot is an address check.
Are there development contributions in Oldbury?
Development contribution area No. 2 is mapped. A contribution attaches to the land rather than the house, so it is established before an offer rather than before a design.
Is Oldbury bushfire-prone?
Part of Oldbury is inside a designated Bush Fire Prone Area across four mapped features. Where it reaches a lot, a Bushfire Attack Level applies and changes materials and cost.
What to ask a builder about a block in Oldbury
Each one is here because of something mapped in Oldbury. Take them to whoever quotes.
- 01
Which of the 7 residential zones mapped in Oldbury covers this address, and what does that one permit that the others do not?
- 02
What bushfire attack level have you built to in Oldbury before, and what did it change in the glazing, decking and screening?
- 03
Have you had an application through Shire of Serpentine-Jarrahdale where a heritage control applied, and how long did the assessment take?
- 04
Does the Jandakot District Structure Plan apply to this lot, and what does it change about layout or staging?
Local landmarks in Oldbury
- Ted Love Conservation Park
Named plans that apply in Oldbury
Structure plans covering land here, as the authority names them. Which one governs your lot decides its density, layout and staging — check the address before you assume the zone alone sets the rules.
- Jandakot District Structure Plan
Endorsed by the Western Australian Planning Commission. The plan that covers your lot sets its density, lot layout and staging.
- North-East Baldivis District Structure Plan
Endorsed by the Western Australian Planning Commission. The plan that covers your lot sets its density, lot layout and staging.
- West Mundijong Indutrial Area Structure Plan
Endorsed by the Western Australian Planning Commission. The plan that covers your lot sets its density, lot layout and staging.
Source: catalogue.data.wa.gov.au/dataset/local-planning-scheme-zones-and-reserves-dop-025, read 2026-09-19.
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 Oldbury, we say so. That is a real answer we give, and the empty builder list above is the proof we mean it.
Building in Oldbury?
Licence checked with Building and Energy WA, insurance sighted, still trading, genuinely working in Oldbury. If we cannot find one worth recommending, we will say so.
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