How Much Does It Cost to Renovate a House in Wellington?
If you’re thinking about renovating, one of your first questions will probably be: “What can we realistically achieve with our budget?”
You might want a kitchen that works better, an extra bedroom, or a complete rethink of your home’s layout.
Understanding the likely costs helps you decide what’s achievable and where to focus your spending.
Renovation costs in Wellington depend on the work involved, the condition of your home, your site and your chosen finishes. Here’s how to start making sense of the numbers.
A Starting Point for Wellington Renovation Costs
As a broad planning guide, renovation projects can fall into these ranges:
Type of project | Indicative cost |
Minor upgrades | $20,000–$50,000 |
Mid-range renovations | $50,000–$250,000 |
Larger renovations or substantial structural work | $250,000+ |
These are broad NZ dollar ranges, not quotes or fixed packages. Smaller individual jobs may sit below them, while extensive renovations can cost considerably more. A structural alteration also needs to be assessed individually; it does not automatically mean a $250,000 project.
Before using any range to plan your project, establish whether it includes GST, design and consent fees, fittings, finishing work and contingency.
The next step is to connect your budget to a clearly defined scope.
Why a Price Per Square Metre Can Be Misleading
Two renovations covering the same floor area can involve very different amounts of work.
Refreshing bedrooms with paint and flooring is a different undertaking from rebuilding a kitchen and bathroom. Removing a wall may also involve structural design, temporary support, new beams and repairs to adjoining surfaces.
A square-metre rate cannot tell you how much of that work your home needs. A useful estimate considers what is being retained, removed, repaired and replaced.
What Affects House Renovation Costs in Wellington?
House renovation costs in Wellington depend on the size and scope of your project, the condition of your home, site access and your chosen finishes. Understanding these factors helps you set a realistic budget and decide where to focus your spending.
1. The Size and Scope of the Work
The number of rooms matters, but so does the depth of the renovation.
Are you updating finishes, replacing everything within an existing layout, or changing how the house functions?
Moving walls, doorways and services creates work beyond the immediate area. Removing a partition, for example, can leave flooring to repair, ceilings to patch and electrical fittings to relocate.
Defining those connections early helps establish the full cost of the change.
2. Structural Changes
Opening up living spaces or creating larger openings can involve more than demolition.
Depending on the existing structure, the work may require engineering, temporary support, new structural members and changes to foundations. There is also the work needed to finish the surrounding spaces afterwards.
Existing buildings can have uneven floors, walls that are out of square and materials that are difficult to match. Accommodating these conditions adds complexity to renovation work.
3. Kitchen and Bathroom Costs
Kitchens and bathrooms bring several trades and specialist components into a relatively small area.
For a kitchen, the price can include cabinetry, benchtops, appliances, plumbing, electrical work, flooring, installation and decorating. A cabinetry quote alone may cover only part of the finished room.
For a bathroom, allow for demolition, plumbing, electrical work, waterproofing where required, ventilation, wall and floor finishes, fixtures and installation.
Keeping services in their existing positions can help control costs. Moving a kitchen or bathroom elsewhere in the house may involve considerably more work.
The specification matters too. Standard cabinetry, custom joinery, tiled showers and different benchtop materials can produce very different totals. That’s why room-specific pricing should be based on a layout and agreed selections.
For a closer look at the work involved, read our Bathroom Renovation Wellington guide.
4. Extending Versus Reconfiguring Existing Space
Before committing to an extension, consider whether your existing floor area could work harder.
On one of our Lower Hutt renovations, we reconfigured internal walls to create an additional bedroom and a master suite with a wardrobe and ensuite.
The project illustrates why it’s worth assessing your existing layout before deciding to extend. Depending on your home, changing how the rooms connect may help achieve your goals within the space you already have. Your builder and designer can help compare the work and costs involved.
An extension adds new floor area, but also introduces foundations, exterior walls, roofing, windows and connections to the existing building.
Reconfiguring can avoid some of those costs, although extensive structural changes or relocating services may still make it a substantial project. Comparing both options against the same goals is a useful early design exercise.
Our guide to choosing between a renovation and an extension explores the considerations in more detail.
5. Access and Wellington Sites
Getting people, materials and equipment to the work area is part of the cost.
For a Wellington property, questions worth asking include:
Can delivery vehicles reach the house?
Is access via steps or a narrow side path?
Is there space for scaffolding, materials and a skip?
Will excavation or concrete placement require specialist equipment?
Could the work affect paths, gardens or other areas that need reinstating?
Difficult access can increase labour, handling and equipment requirements. These practical details need to be considered when the project is priced.
6. The Age and Condition of the House
An older home may need repairs before the planned improvements can proceed.
At Orkney Group, our bathroom renovations have uncovered hidden water damage, deteriorated framing and ageing plumbing behind otherwise ordinary-looking surfaces.
Initial inspections and investigations can help identify risks, but some conditions only become clear once walls or floors are opened.
The budget should distinguish between known repairs, allowances for work that cannot yet be fully defined, and a contingency for unexpected discoveries.
7. Architectural, Engineering and Consent Costs
Your overall budget may need to cover architectural design, engineering, specialist reports and council fees alongside construction.
What is required depends on the project. Structural alterations and extensions generally require building consent, while some other work may be exempt. Confirm the requirements for your proposed work with your designer and local council early.
You can also refer to MBIE’s guidance on checking whether you need consent.
Ask which professional services and council costs are included in each proposal, and which you will pay separately.
8. The Level of Finishes
Product choices affect both purchase and installation costs.
A particular tile may require more preparation or labour to install. Custom storage can cost more than standard units. Detailed joinery, specialist lighting and premium fittings can also add up across several rooms.
Choose the features that matter most to you, then look for practical savings elsewhere. Resolving the layout and essential building work first gives you a clearer picture of what remains available for finishes.
How Much Contingency Should You Allow?
A contingency is money reserved for unforeseen work.
A starting allowance of around 10–20% of the overall renovation budget can be useful, with the appropriate amount depending on the condition of the home and how much uncertainty remains. Complex projects may need more.
For example, if your total available budget is $150,000, reserving $22,500 as a 15% contingency leaves $127,500 for all planned costs.
That remaining amount needs to cover construction and any separately payable design, consent, product and living costs. This is an illustration of budget allocation, not an estimate for a particular renovation.
Keep optional upgrades separate from your contingency wherever possible. Spending the reserve on additional features reduces what is available if unexpected repairs arise.
What Can You Realistically Achieve With Your Budget?
Start with the improvements that would make the biggest difference to daily life.
Perhaps the priority is a usable family bathroom, better kitchen flow or another bedroom. Once those outcomes are clear, your builder and designer can assess different ways to achieve them.
Useful options to compare include:
Your priority | An option worth exploring |
A kitchen that functions better | Improve layout and storage while retaining service locations where practical |
More usable space | Reconfigure underused areas before deciding whether to extend |
Updating several rooms | Consider completing priority areas first, while allowing for the additional costs of separate stages |
Better finishes within a fixed budget | Choose a few priority features and use simpler finishes elsewhere |
These are options to investigate, rather than promises of what a particular dollar amount will buy.
Share your overall budget early, including whether it must cover fees, GST and contingency. That allows the design conversation to start with realistic boundaries.
If the initial scope exceeds your budget, ask for clearly priced alternatives. Reducing floor area, simplifying structural changes or adjusting specifications may have a greater effect than trimming small finishing items.
Staging your renovation can help spread spending over time, but it may increase the overall cost. Each stage can involve additional setup, scaffolding and costs for bringing trades back to site.
For example, if a renovation is estimated at $100,000 and you proceed with $50,000 of work now, you shouldn’t assume the remaining stage will still cost $50,000 when completed separately.
Ask your builder to compare the cost of completing everything together with the likely costs of separate stages. Planning the whole project upfront can also help reduce duplicated work and avoid undoing recently completed areas.
How to Get a More Reliable Renovation Price
Pricing becomes more useful as the scope, plans and product selections become clearer.
Before accepting a proposal, check:
Exactly what work and finishing are included.
Whether the price includes GST.
Which fees or purchases you must pay separately.
What provisional sums have been allowed and what they cover.
How unforeseen work and requested changes will be priced and approved.
A provisional sum is an allowance for work that cannot yet be accurately priced. It may change once the requirements are known.
Our guide to understanding and comparing builders’ quotes explains how to look beyond the total and compare what you are actually receiving.
Talk Through Your Renovation Budget With Orkney Group
If you’re planning a renovation in Wellington, start with your priorities, your available budget and any plans or ideas you already have.
At Orkney Group, we can help you understand the work involved, identify the decisions that affect cost and explore a scope that suits your home.
