Bathroom Renovations In Kew

Kew · Boroondara City Council

Bathroom renovators in Kew

An information-only vetting guide for bathroom renovators working on Kew period homes. Kew bathroom renovation is often complicated by suspended timber sub-floors under period homes, existing single-brick walls, and heritage controls on any external changes (window relocation, skylight addition). Cost band typically $35k-$90k in Kew vs $18k-$55k Melbourne median. BuildPilot is not yet matching builders in Kew - this is a curator's checklist while VIC matching rolls out in 2026.

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George Giannakakis

By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580

Last reviewed: · How we research

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What matters in Kew

Kew architectural era

Predominantly Federation, Edwardian and inter-war Californian bungalow. Mid-century modernist stretches on Cotham Road / Barkers Road. Some 1970s-2000s courtyard homes.

Heritage + planning overlays

Approximately 50-60% under Heritage Overlay. Vegetation Protection Overlay coverage is extensive - Kew's established tree canopy is protected on most streets. Boroondara planning permit lead time (heritage): 4-9 months for internal reno + external alterations, 8-14 months for extensions.

Typical lot geometry

Median residential lot 650-900m². Larger 1,200m²+ lots along Yarra escarpment. Narrower townhouse-sized 350-500m² lots in redevelopment pockets.

Waterproofing over suspended timber sub-floor

Most pre-1940 Kew homes have suspended timber sub-floors. Waterproofing to AS 3740 over timber joists is materially harder than over slab. Fall achievement typically requires jacking or re-sistering joists. Insist on a licensed waterproofer, a video of the flood test, and a written 10-year guarantee - failure here is the #1 cause of $20k+ warranty claims.

Kew FAQs

How much does a bathroom renovation cost in Kew?

Mid-range (re-tile, new vanity, keep footprint): $35k-$55k. Full renovation (new plumbing, floor-to-ceiling tiles, custom vanity, quality tapware): $55k-$90k. Premium (freestanding bath, heated floors, stone finishes, architect design): $90k-$180k+. Kew sits 30-45% above Melbourne median.

Do I need a Planning Permit for this work in Kew?

Approximately 50-60% under Heritage Overlay That means most external work (extensions, window relocations, front-elevation changes, roof-form changes) triggers a Planning Permit before Building Permit. Internal-only work often only needs a Building Permit. Check Boroondara City Council's heritage assessment guidance or a title search on VicPlan (mapshare.vic.gov.au) before you commission drawings.

How do I verify a bathroom renovator operating in Kew?

Three checks: VBA public practitioner register at vba.vic.gov.au/practitioners/register (ARBV register at arbv.vic.gov.au for architects); Domestic Building Insurance (DBI) eligibility confirmation with VMIA for your contract price - compulsory over $16,000; Three completed Boroondara City Council projects delivered in the last 24 months, with the client's permission to inspect. Do all three before you pay any deposit.

Why do Kew trades cost more than the Melbourne median?

20-40% above Melbourne median trade rates. Contributing factors: heritage-detail skill premium, tighter site access on established streets, specialist trade selection (heritage plaster, cast iron, leadlight, sympathetic joinery), and premium finish-level expectation on Kew projects. Trade rates in Kew track closer to inner-Melbourne premium rates than to greenfield growth-corridor rates.

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Disclaimer: Pricing ranges are Mar 2026 Melbourne market observations and indicative only. Actual cost depends on site conditions, access and finish level. BuildPilot is an independent home-build CoPilot and does not build or supply. Always obtain three fixed-price quotes on identical inclusions.

What this costs to keep, Victoria

The ongoing numbers

Full bathroom renovation (mid-range)
lasts 20+ yrs · rental: usually the landlord
$20,000 – $48,000
Leaking shower fix (strip, waterproof, retile base)
lasts 15-20 yrs · rental: usually the landlord
$2,800 – $7,000
Shower regrout and reseal
lasts 5-8 yrs · rental: usually the landlord
$650 – $1,700
Bathroom exhaust fan supplied and installed
lasts 10 yrs · rental: usually the landlord
$280 – $700
Replace a toilet suite
lasts 20-30 yrs · rental: usually the landlord
$700 – $1,600

Indicative 2026 ranges, not quotes. All 66 items

Rules that apply in 2026
  • Safety switches (RCDs) on every circuit
    Required on all final sub-circuits in new work and in rentals in both states.
  • Wet-area waterproofing to AS 3740 with certificate
    Membrane under tiles, certified, with proper falls to waste.
  • Safety glass in doors, low windows and bathrooms
    AS 1288 requires toughened or laminated glass in human-impact zones.
Score your house against all 17 rules
The villain to watch on this job

The leaking shower: The membrane under the shower tiles has failed and water is going into the wall and floor instead of the drain. It is the most common hidden repair in houses built from 1985 to 2010.

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