Q1 2026 Tightening vacancy expected as supply pipeline stalls •Rental growth remains moderate, with prime rents up 0.3% q/q and 2.8% y/y, averaging $737/sqm.•Incentives remain flat across Q1 2026, averaging 47.0% for prime offices and 50.0% for secondary.•The development pipeline remains constrained over the nextfiveyears, with no new projects forecast until 2031.•Consequently, vacancy is expected to steadily decline, forecast to reach 10.4% by end of 2029.•Perth's CBD recorded its first office sale since 2024 in Q1 2026, with 178 Georges Terrace transacting for $9.5M. Perth CBD office yieldsby grade% (LHS), and spread in bps (RHS) Managing Director, WAJeremy Robotham+61 407 381 471jeremy.robotham@au.knightfrank.com Office Leasing, WAIan Edwards+61 418 917 019ian.edwards@au.knightfrank.com Research & ConsultingLaurence Panozzo +61 401 251 875laurence.panozzo@au.knightfrank.com Research & ConsultingTony McGough+61 406 928 820tony.mcgough@au.knightfrank.com Tenant Representation, WAAlyson Martinovich +61 459 696 098alyson.martinovich@au.knightfrank.com Valuations & Advisory, WACameron Thomson+61 408 782 929cameron.thomson@au.knightfrank.com