Building Dispute WA — Magistrates Court or Building Commission?

The Jurisdictional Split

Not every building-related dispute can be heard in the Magistrates Court of Western Australia. The Building Services (Complaint Resolution and Administration) Act 2011 excludes claims that the Building Commissioner or the State Administrative Tribunal (SAT) has jurisdiction to deal with. The Building Commissioner also handles complaints about regulated building services and home building work contracts. If someone has filed a minor case claim against you over building work, the first question is whether the claim belongs in the Magistrates Court at all.

The line is drawn by the nature of the work and the amount involved:

• Regulated building work or home building contract disputes within the Building Commissioner's or SAT's jurisdiction — the Magistrates Court cannot hear claims that fall within that statutory jurisdiction.
• Trade and contract disputes under $10,000 that are not regulated building work — an unpaid invoice for minor repairs, a garden landscaping disagreement, or a dispute over painting or cleaning work can proceed as a minor case claim in the Magistrates Court.

The distinction between "building work" regulated by the Building Services Act and general trade services is not always obvious. Plumbing, electrical work, structural alterations, and work requiring a building permit can raise regulated-building issues. Handyman repairs, non-structural maintenance, and cosmetic work often do not.

What to Do If You Think the Claim Is in the Wrong Forum

If you have been served with a Form 4 for a dispute you believe belongs with the Building Commissioner, you still need to respond within 14 days if served in WA (21 days if served interstate). Do not ignore the claim just because you think it was filed in the wrong court — a default judgment can be entered against you regardless of jurisdictional issues.

File your Form 15A through the eCourts Portal. In Part H (your defence), state that the dispute involves regulated building work under the Building Services Act 2011 and that the Magistrates Court lacks jurisdiction. Raise this at the status conference. The magistrate can determine whether the Court has jurisdiction over the claim.

Residential Tenancy Disputes: Another Boundary

If the claim involves a residential tenancy — bond disputes, rent arrears, property damage by a tenant or landlord — the routing depends on whether it is a tenancy governed by the Residential Tenancies Act 1987 (WA).

Section 12A of the RTA treats prescribed tenancy disputes as minor cases for the purposes of Part 4 of the Magistrates Court (Civil Proceedings) Act 2004. So prescribed landlord-tenant disputes do come to the Magistrates Court, but they follow RTA-specific evidence requirements (property condition reports, bond disposal notices).

Boarder and lodger arrangements fall outside the RTA and proceed as ordinary minor case claims under Form 4.

Practical Examples

A homeowner sues you for $8,000 over a kitchen renovation you completed. If the renovation is a regulated building matter within the Building Commissioner's jurisdiction, the Magistrates Court cannot hear it.

A homeowner sues you for $3,000 over a fence you built. Fencing disputes under the Dividing Fences Act 1961 (WA) have their own process. Minor fencing disputes may be heard in the Magistrates Court, but check whether the local government or another authority should be involved first.

A landlord sues a former tenant for $5,000 in damages. If this is a prescribed tenancy dispute under the RTA, it is heard as a minor case. If the arrangement was a boarding or lodging agreement, it is an ordinary Form 4 claim.

A customer sues a tradesperson for $4,000 over defective plumbing. Whether the claim falls within the Building Commissioner's jurisdiction depends on the work and the claim. Check with Building and Energy before assuming it belongs in court.

The Bottom Line

If you are unsure whether your dispute belongs in the Magistrates Court or with the Building Commissioner, respond to the claim on time (Form 15A within 14 days if served in WA, or 21 days if served interstate) and raise the jurisdictional issue at the status conference. The magistrate will decide. Building and Energy at the Department of Local Government, Industry Regulation and Safety (1300 489 099) provides information about regulated building disputes.

For a full guide to the minor case response process in the Magistrates Court, the WA Minor Case Response Guide covers deadlines, Form 15A, evidence preparation, and what to expect at the hearing.

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