What Does a Full Home Renovation Cost in NZ? (Room-by-Room Guide)
Meta description: Thinking bigger? Here's what it costs to renovate your whole home — kitchens, bathrooms, and more.
Planning a complete home transformation? Whether you're restoring a villa or modernising a 1980s bungalow, renovating your entire home is a big step—but it doesn’t have to be overwhelming.
At Key Interiors, we break it down by room, by square metre, and by renovation level—so you know exactly where your budget is going. Here’s your full guide to full home renovation cost in NZ for 2025.
💰 Total Cost Range (at a Glance)
Full home renovations vary widely depending on scope and finish level:
Renovation TypeEstimated Cost Range (NZD)Cosmetic Refresh$80,000 – $150,000Mid-Range Renovation$180,000 – $300,000High-End Renovation$350,000 – $600,000+
Note: These estimates are based on a 120–200m² home in Auckland. Smaller homes or partial renovations may cost less.
📐 Cost per Square Metre (NZ Benchmark)
Finish LevelPer m² Estimate (NZD)Entry-level$800 – $1,200/m²Mid-range$1,400 – $2,200/m²High-end$2,500 – $3,500+/m²
Includes kitchens, bathrooms, flooring, paint, lighting, internal works. Excludes exterior, landscaping, and major structural changes.
🧱 Room-by-Room Breakdown
Here’s what you can expect for each key space:
🛁 Bathroom
Average cost: $28,000 – $38,000 (mid-range)
Includes full strip-out, waterproofing, new fittings, tiling, vanity, lighting, and design.
👉 Full bathroom renovation cost guide
🍳 Kitchen
Average cost: $35,000 – $55,000 (mid-range)
Includes demolition, new cabinetry, stone benchtops, splashbacks, appliances, flooring, lighting, and plumbing.
🧺 Laundry
Average cost: $12,000 – $20,000
Includes new cabinetry, benchtop, sink/tapware, tile or laminate flooring, paint, and appliance setup.
🛏️ Bedrooms
Average cost per room: $8,000 – $15,000
Covers flooring, wardrobes, insulation, paint, electrical, and minor layout tweaks.
🛋️ Living/Dining Areas
Cost range: $15,000 – $30,000+
Includes floor updates (timber, carpet, or hybrid), paint, lighting upgrades, and any wall modifications.
🏡 Other Inclusions
Electrical & Lighting Upgrades
Interior Repainting
Insulation & Heating Improvements
Smart Home or AV Systems (if desired)
🧠 Planning Tips for a Full Home Renovation
Decide on your finish level early to stay within budget
Factor in temporary accommodation if needed
Choose a builder who offers fixed-price contracts and clear scope
Prioritise kitchen, bathroom, and insulation upgrades for resale value
🛠️ Why Renovate With Key Interiors?
Room-by-room quotes and design support
In-house project management means fewer delays
Local knowledge of NZ codes and material pricing
Transparent cost breakdowns by m² and room
Frequently Asked Questions
What’s the average cost to renovate a full house in NZ?
For a 3-bedroom, 2-bathroom home in Auckland, the average full renovation cost in 2025 is around $200,000–$300,000 depending on finish level and layout changes.
How long does a full home renovation take?
Anywhere from 10–20 weeks depending on scope. Add time if you’re including structural work or extensions.
Is it cheaper to renovate or rebuild?
Renovating is usually more cost-effective and allows you to retain character features—especially in villas or heritage homes. But major structural changes can narrow the price gap.
Do I need council consent for a full renovation?
Not always. If you’re changing internal layouts, reconfiguring plumbing, or making structural changes, you may need consent. We can advise and handle this process.
Can I stage my renovation room by room?
Yes! Many clients renovate in phases—starting with bathrooms and kitchens. We can help you prioritise and plan based on your goals and budget.