Real 2026 pricing by scope - single-room, whole-home, extensions - and where renovation budgets actually blow out in metro Adelaide.

By George Giannakakis · B.Arch.Studies · M.Arch (UniSA) · RLA300580
Last reviewed: · How we research
Kitchen only: $18k-$55k (cabinetry, benchtop, splashback, appliances). Bathroom only: $18k-$45k (waterproofing, tiles, fittings, tapware). Both + laundry: $45k-$95k. Whole-home cosmetic (paint, floors, kitchen, bathroom, doors, blinds): $80k-$160k. Full structural reno with extension (new wing, second storey, walls moved): $220k-$500k+.
Rising damp in pre-1975 bluestone/sandstone homes ($15k-$40k to remediate). Asbestos discovered in walls, eaves, floor coverings ($8k-$25k to remove). Rewiring pre-1975 wiring to current standard ($12k-$25k). Rotten timber under floors in character homes ($15k-$45k). Heritage-matching brickwork or windows on additions ($15k-$50k). Get a pre-purchase inspection or full building assessment before locking your budget.
Kitchen benchtop: engineered stone $850-$1,500/m², natural stone $1,600-$3,200/m². Cabinet finish: laminate $8k-$18k, 2-pack polyurethane $18k-$38k, timber veneer $22k-$45k. Bathroom waterproofing (do it right, not once): $2,800-$5,500 for a typical bathroom - the shortcut here fails at 5-7 years and costs $12k+ to fix.
Rear ground-floor addition: $2,800-$3,600/m² of new floor area. Second-storey addition: $3,400-$4,800/m² (roof off, engineering, staircase). Wing conversion (garage or verandah into living): $1,800-$2,800/m². If you can achieve your outcome inside the existing footprint by moving walls, that's usually 25-40% cheaper than adding new area.


Getting your budget right is the first real step in the building journey - but most people don’t know where to start. In this episode, we break down the full process of setting your game plan, from confirming your finance capacity to comparing quotes, and share a free Google Sheets budgeting template to help you stay on track from day one.
Watch full episodeCosmetic refresh (paint, floors, hardware, blinds, minor kitchen tune-up) can transform a home for $18k-$45k. Focus on the surfaces you see and touch daily. Avoid moving walls, wet areas or structural elements at this budget.
A whole-home renovation with new kitchen, bathrooms, floors, paint and minor structural work typically costs $160,000 to $320,000. Add $80k-$180k if you need to add extension floor area or reconfigure the roofline.
Usually yes - heritage character often adds 15-30% to resale value in Adelaide inner-ring suburbs. But budget an extra 20-30% for heritage-matching materials, streetscape assessment, and slower approvals. Get a heritage-experienced designer, not a generic drafter.
Kitchen or bathroom only: 4-8 weeks on-site. Whole-home cosmetic: 3-5 months. Full structural reno with extension: 8-14 months from contract. Add 2-4 months for design + council approval before site works start.
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