BA1 — certified application
A BA1 is an Application for a building permit — certified. It is lodged with a Certificate of Design Compliance (BA3) from a registered building surveyor.
Everything you need to know about patio and shed approvals across Western Australia.
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Whether approval is needed depends on the project, site and applicable requirements. A patio or shed may need a building permit, development approval, both, or neither. Confirm the applicable pathway with the permit authority or a registered building surveyor before building.
The right path depends on the project and eligibility. Neither application path guarantees approval.
A BA1 is an Application for a building permit — certified. It is lodged with a Certificate of Design Compliance (BA3) from a registered building surveyor.
A BA2 is an uncertified application, available only for eligible Class 1a and Class 10 projects. In this pathway, the permit authority carries out the assessment and certification process.
| Pathway | Before lodgement | Assessment route |
|---|---|---|
| BA1 certified | BA3 Certificate of Design Compliance from a registered building surveyor. | The permit authority assesses the certified application. |
| BA2 uncertified | Confirm that the Class 1a or Class 10 project is eligible. | Permit-authority assessment and certification occur in this pathway. |
This is a typical journey only: steps may change, overlap or depend on the project and authority.
Development approval addresses planning matters such as use, siting and relevant planning controls. A building permit is a separate building-control approval. One does not automatically replace the other.
| Owner | Remains responsible for obtaining and maintaining required approvals and providing accurate project information. |
|---|---|
| PSKWA | May provide administrative assistance only where that service is selected. |
| Surveyor / certifier | Provides certification services within their engagement, including a BA3 where applicable. |
| Local government / permit authority | Receives and assesses the application and makes the permit decision in its statutory role. |
Current official local-government guidance commonly states statutory assessment periods of 10 business days for certified applications and 25 business days for uncertified applications. These are assessment periods only, not total-project guarantees. Requests for information and other approvals can affect elapsed time; confirm the current period with the relevant authority.
Current WA Government building approvals informationWhat should I check about my property before I finalise a patio or shed? Education and preparation only. These prompts can help you organise questions before ordering; they do not determine a legal, planning, building or permit outcome.
A current title record may show ownership, legal description and registered interests, but no one document shows every constraint. Easements may benefit or burden land and may matter near a proposed placement.
Use qualified legal or property interpretation for rights or interests relevant to your proposal.
Underground electricity, gas, telecommunications, water and sewer services, and overhead network assets, may need early awareness. BYDA is a referral and service-plan starting point, not exact locating; Water Corporation assets may affect placement or an application.
Follow current asset-owner and qualified locator guidance; this does not provide clearances or excavation instructions.
Fences, features, maps and existing structures are not proof of a legal boundary. Official survey documents can inform an early check where a placement position matters.
Use a licensed surveyor where legal boundary position needs to be established.
Setbacks and local planning can vary with the lot, project, zoning, framework, local government and site. PlanWA is an initial check only, including planning, heritage and special-area mapping.
Do not rely on universal distances; confirm questions with the relevant authority or practitioner and review the BA1/BA2 guidance.
Registered or private restrictions may matter to a proposal and can appear in title material.
Seek qualified legal or property advice about interpretation or enforceability.
Early notes about delivery, material and construction access can include gates, narrow drives, turning space, slopes and overhead obstructions. This City of Swan example is not statewide guidance.
Confirm practical logistics with an appropriate qualified provider; no delivery or crane feasibility is promised.
You can note existing structures, pools, retaining walls, fences, tanks, on-site wastewater, slope, levels, drainage paths, infrastructure and other visible constraints before ordering.
Questions about septic systems, strata, BAL, bushfire, flood, heritage, coastal or acid-sulfate matters need future evidence or the relevant authority or qualified provider.
PSKWA provides education and preparation prompts only.
Qualified providers and relevant authorities assess their own areas of responsibility.
The exact list depends on the project and application pathway. Use our checklists to prepare your application.
Enter your suburb to see which Western Australian local government covers your property and jump straight to its approval information.
We currently cover 30 WA councils: City of Swan, City of Wanneroo, City of Joondalup, Shire of Mundaring, City of Cockburn, City of Stirling, City of Gosnells, City of Armadale, City of Rockingham, City of Melville, City of Canning, City of Bayswater, City of Kalamunda, City of Mandurah, Shire of Murray, Shire of Serpentine-Jarrahdale, Shire of Waroona, Shire of Boddington, Shire of Chittering, Shire of Gingin, Shire of Toodyay, Shire of York, Shire of Northam, Shire of Beverley, Shire of Dandaragan, Shire of Moora, Shire of Victoria Plains, Shire of Cuballing, Shire of Brookton, Shire of Pingelly — with more being added over time.
Area-specific guidance and official links for Western Australian local governments. More councils are being added over time.
North-east metropolitan Perth, Swan Valley & rural
View approval guideNorthern coastal growth corridor & semi-rural east
View approval guideEstablished northern coastal suburbs
View approval guidePerth Hills — bushfire-prone & semi-rural
View approval guideSouth-west coastal Perth & urban infill
View approval guideEstablished northern coastal & infill suburbs
View approval guideSouth-east metropolitan Perth
View approval guideSouth-east metropolitan & Darling Scarp foothills
View approval guideSouth-west coastal Perth
View approval guideRiverside southern Perth suburbs
View approval guideSouth-east metropolitan Perth
View approval guideInner north-east riverside suburbs
View approval guidePerth Hills & eastern foothills
View approval guidePeel coastal city
View approval guidePeel — Pinjarra, Ravenswood & Dwellingup
View approval guideSouth-east Perth peri-urban & Darling Scarp
View approval guidePeel — coast to Darling Scarp
View approval guidePeel inland — rural & forest
View approval guideNorthern rural — Bindoon & the Chittering Valley
View approval guideCoastal & rural north of Perth
View approval guideAvon Valley rural
View approval guideAvon Valley — historic York
View approval guideAvon Valley & eastern Wheatbelt
View approval guideAvon Valley Wheatbelt
View approval guideTurquoise Coast & Wheatbelt
View approval guideCentral Wheatbelt
View approval guideCentral Wheatbelt — Calingiri & New Norcia
View approval guideCentral-southern Wheatbelt
View approval guideCentral-southern Wheatbelt
View approval guideCentral-southern Wheatbelt
View approval guideFree, printable checklists and guides to help you prepare your application. Open any one and choose Print / Save as PDF.
Send us your patio or shed plans, drawings or photos. Where selected, our WA team can provide administrative assistance to help you understand the approval process.
Send us your project and property information for a free project review. Our WA team provides general administrative and process guidance based on the information submitted; the relevant authority decides which requirements apply.