A Step-By-Step Guide to Budgeting for your Renovation Project (+ 5 Handy Budgeting Tips!)

Nov 2, 2020
6 min read

Dining room with table and chairs and chandelier

Renovation Budget Guide: How to Plan Your Project Costs

Creating a renovation budget may not be the most exciting part of a project, but it's one of the most important. While some people enjoy crunching numbers and building spreadsheets, many homeowners would rather jump straight to choosing finishes and planning their dream space.

However, a well-planned renovation budget can help you make informed decisions, avoid unexpected expenses, and keep your project on track from start to finish. Whether you're renovating a bathroom, updating your kitchen, or tackling a whole-home transformation, having a clear budget in place is essential.

To help you get started, we've put together a simple step-by-step guide to creating a renovation budget, along with practical tips for keeping your spending under control throughout the project. For tips on planning a renovation, check out "How to Plan a Successful Home Renovation".

How to Create a Renovation Budget

A spreadsheet can be one of the most effective tools for planning and managing renovation costs. It doesn't need to be complicated, but it should be detailed enough to help you understand exactly where your money is being allocated.

Step 1: List the Areas You Want to Renovate

Start by creating headings for each area of your home that you plan to renovate. For example:

Kitchen
Living Room
Master Bedroom
Bathroom
Laundry

This will give you a clear overview of the scope of your project and help you organise costs by space.

Step 2: Break Each Space Into Individual Projects

Under each room heading, list the specific improvements you want to make.

For example, under "Bathroom" you might include:

New shower
New vanity
Updated flooring
Lighting upgrades
Painting

For a kitchen renovation, your list may include:

New cabinetry
Benchtops
Appliances
Splashback
Flooring

Breaking your renovation down into smaller components makes it easier to estimate costs and identify priorities.

Step 3: Add Costs and Track Your Spending

As you research products, request quotes, and compare options, begin adding costs to your spreadsheet.

Include as much detail as possible, such as:

Fixtures and fittings
Appliances
Flooring materials
Lighting
Cabinetry
Paint
Labour costs
Consent fees, where applicable

The more detailed your renovation budget is, the more accurate it will be. You'll also be able to quickly identify areas where you may be overspending or opportunities to make savings.

Remember that your budget should be treated as a live document. Update it regularly as quotes are received, products are selected, and project requirements evolve.

How Much Should You Budget for a Renovation?

Every renovation project is different, but understanding typical spending ranges can help you set realistic expectations.

As a general guide:

Kitchen renovations often cost between 5% and 15% of your home's value. If a kitchen renovation is on your list, explore our kitchen island ideas for inspiration and practical design considerations.
Bathroom renovations typically cost between 3% and 7% of your home's value. If you're planning a bathroom renovation, our bathroom renovation tips guide can help you avoid common mistakes and plan more effectively.

For example, if your home is worth $600,000, a kitchen renovation may range from approximately $30,000 to $90,000 depending on the scope of work, materials selected, and level of customisation.

While these figures provide a useful starting point, it's important to remember that every project is unique. The best approach is to obtain professional advice and detailed quotes before committing to a budget.

Fixed-Price vs Estimate-Based Contracts

When planning your renovation budget, it's important to understand the type of pricing you are being given. Not all quotes are structured the same way, and this can have a big impact on your final project costs.

A fixed-price contract gives you more certainty because the agreed scope of work is priced upfront. This can be helpful if you want clearer cost control and fewer surprises. However, it is important to remember that changes to the scope, product selections, or unexpected issues may still result in variations.

An estimate-based contract is usually less certain. It provides an indication of likely costs, but the final amount may change depending on labour, materials, site conditions, and project requirements. This can sometimes work well for projects where the full scope is difficult to define at the beginning, but it does require careful monitoring.

Before choosing a builder or contractor, make sure you understand exactly what is included, what is excluded, and how any variations will be handled. Comparing quotes properly can help you avoid confusion and make a more informed decision.

For more guidance, read our guide to understanding and comparing builders' quotes.

How to Prioritise Spending When Budgets Are Tight

If your renovation budget doesn't stretch to everything on your wish list, prioritisation becomes essential.

Start by focusing on the work that will have the biggest impact on how you use the space. This may include improving layout, fixing structural or moisture issues, upgrading poor lighting, or replacing items that are no longer functioning properly.

Next, separate your needs from your nice-to-haves. A new vanity, better storage, or improved ventilation may be more important than premium tapware or high-end finishes. That doesn't mean you need to compromise on the final result, but it does mean making thoughtful decisions about where your money will work hardest.

It can also help to think long-term. Spending more on quality workmanship, durable materials, or practical design may save money later by reducing the need for repairs or changes.

If needed, your renovation can also be completed in stages. Completing essential work first and leaving cosmetic upgrades for later can help you move forward without overextending your budget.

Renovation Budget Tips to Keep Your Project on Track

Once you've established your budget, the next challenge is sticking to it. These practical tips can help:

Identify Your Non-Negotiables

Before making any purchasing decisions, determine which elements of the renovation are essential and which are simply nice to have.

For example, if your kitchen cabinetry is failing and your appliances are outdated, those items may take priority over decorative upgrades.

Focusing on your must-haves first can help prevent budget blowouts and ensure the most important work gets completed.

Remember that renovations can often be completed in stages. If your budget doesn't stretch to everything at once, some improvements may be able to wait until a later date.

Research Products and Materials Early

Spend time exploring products, materials, and finishes before making final decisions.

You may discover alternatives that provide a similar look and performance at a lower cost. Conversely, you may find that investing slightly more in certain products delivers better long-term value.

Keeping a record of products and pricing in your spreadsheet will help you compare options and make informed decisions.

Set a Realistic Maximum Spend

It's easy to become carried away once renovation ideas start flowing.

Before you begin, establish a maximum budget that reflects your financial position and your property's value.

Consider:

Your available funds
The value of comparable homes in your area
The likely return on investment
Your long-term plans for the property

Having a defined spending limit can make decision-making much easier throughout the renovation process.

Include a Renovation Contingency Fund

One of the most common renovation budgeting mistakes is failing to allow for unexpected costs.

Once walls, floors, or ceilings are opened up, hidden issues such as water damage, outdated wiring, or structural problems can sometimes be uncovered.

A good rule of thumb is to set aside at least 10% of your renovation budget as a contingency fund. This

provides a financial buffer if unforeseen work becomes necessary.

Choose the Right Renovation Contractor

While obtaining multiple quotes is important, choosing a contractor based solely on price can be risky.

A lower quote doesn't always represent better value if it leads to poor workmanship, project delays, or costly rework later.

Look for a contractor with:

Relevant experience
Positive client reviews
Strong communication
Appropriate licences and qualifications
A proven track record of delivering successful projects

The right contractor can help you make smarter decisions, identify cost-saving opportunities, and avoid expensive mistakes. It's also worth understanding what protections are available during your project, including the benefits of a Master Build Guarantee.

Start Planning Your Renovation Budget Today

A successful renovation starts long before construction begins. Taking the time to create a detailed renovation budget, prioritise your spending, and allow for unexpected costs can help you approach your project with confidence and avoid costly surprises along the way.

Whether you're planning a bathroom upgrade, kitchen renovation, home extension, or a complete home transformation, expert advice early in the process can make budgeting and decision-making much easier.

At Orkney Group, we work with homeowners across Wellington to plan and deliver renovation projects that balance design, functionality, and budget. If you're considering a renovation, get in touch with our team to discuss your ideas, request an estimate, or learn more about our renovation services.

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