Building Act 2011

[This is a list of terms defined and the provisions where they are defined. The list is not part of the law.]

Defined term Provision(s)

adult 3

adversely affect land 3

affected land 83

amending Act 204

applicable building standard 3

applicable certificate of design compliance 3

application 4(1), 13, 53

approved 3

authorised certifier 140(2)

authorised person 3

authority under a written law 3

boundary retaining wall 75

building 3, 56(4), 57(5)

building approval certificate 3

building approval certificate (former provisions) 180(1)

Building Commissioner 3

building licence 178(1)

building order 3, 110(1)

building order (emergency) 3

building permit 3

building record 131(1)

building regulation or local law 123(1)

building service contractor 3

building standard 3

building surveyor 3

building work 3

business day 75

CEO 127(8)

certificate 19(1)

certified application 13

classification 3

close wall 80(2A), 88(1)

commencement day 3, 176, 205(1), 206(1), 207(1), 209(1)

compliance purposes 94

Crown land 3

Crown lease 76(3)

declaration 39(1)

demolition licence 179(1)

demolition permit 3

demolition work 3

designating permit authority 95

direction 104(1)

dividing fence 75

encroachment permission 189(1)

entry warrant 94

event 92

existing building 92

former provisions 176

incidental structure 3

independent building surveyor 3, 4(2)

interested person 131(1)

land 3

local government employee 127(8)

managed reserve 76(3)

management body 76(3)

mining operations 72(1)

Minister for Lands 3

modification 53

non‑compliance 118(1)

notice 83, 191(1), 192(1), 193(1), 194(1), 198(1), 199(1), 200(1), 201(1)

notifiable event 83

occupancy permit 3

occupier 40, 81(1), 94

OP application (transitional) 182A(1)

order 195(1)

other land 81(1)

outward facing side 88(1)

owner 3, 5(1), 76(2)

party wall 75

party wall building consent 183(1)

party wall work consent 184(1)

permit 31, 68

permit authority for a building 3

permit authority for an incidental structure 3

permit requirement provisions 68

person responsible 75

place 94

prescribed 3

protection structure 75

provisions of this Act 209(1)

public authority 208(1)

public body 125(2)

Registration Act 3

regulation 181(1)

relevant local government 7(3)

relevant permit authority 31

relevant record 94

responsible person 31

road 76(3)

specialist 3

specified 39(1), 83, 92, 112(1), 138(2)

strata lease 3

substantial dividing fence 75

survey 3

technical certificate 3

temporary permit 41(1)

unauthorised work 51(1)

uncertified application 13

underpinning consent 185(1)

work 31, 51(1), 75

works land 75

© State of Western Australia 2026.

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Attribute work as: © State of Western Australia 2026.

By Authority: ANDREW JONES, Government Printer