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Andover Extension Pricing: A Clear Cost Breakdown

  • stuart4938
  • Dec 29, 2025
  • 4 min read

Adding an extension to your home is a big decision. It can transform your living space, add value, and make your house feel brand new. But before you start, understanding the costs involved is crucial. In this post, I’ll walk you through the key factors that affect andover extension pricing. I’ll also share practical tips to help you plan your budget wisely.


What Influences Andover Extension Pricing?


When thinking about an extension, many factors come into play. The size, design, materials, and even the location of your property in Hampshire can affect the final price. Here’s a quick look at the main elements:


  • Size of the extension: Larger extensions cost more because they require more materials and labour.

  • Type of extension: Single-storey, double-storey, or wrap-around extensions all have different price points.

  • Materials used: High-end bricks, windows, and finishes will increase costs.

  • Planning and permissions: Some projects need planning permission, which can add fees and time.

  • Labour costs: Skilled tradespeople in Hampshire may charge different rates.

  • Additional features: Heating, plumbing, electrical work, and insulation all add to the budget.


For example, a simple single-storey rear extension might cost less than a double-storey side extension with high-end finishes. Knowing these factors helps you set realistic expectations.


Eye-level view of a partially built brick extension on a residential house
Partially built brick extension on a house

Understanding Andover Extension Pricing in Detail


Let’s break down the costs you can expect when planning an extension in Andover. This will give you a clearer picture of where your money goes.


1. Base Construction Costs


The core of your budget will be the construction itself. This includes:


  • Foundations and groundwork

  • Brickwork or blockwork

  • Roofing and windows

  • Internal walls and plastering


On average, you might expect to pay between £1,200 and £1,800 per square metre for a standard extension in Andover. This range depends on the quality of materials and complexity of the build.


2. Professional Fees


Don’t forget to budget for:


  • Architect or designer fees (if you want a custom design)

  • Structural engineer reports

  • Planning application fees (if required)

  • Building control inspections


These can add up to 10-15% of your total project cost. It’s worth investing here to avoid costly mistakes later.


3. Interior Finishes and Fixtures


Once the shell is up, you’ll need to consider:


  • Flooring

  • Kitchen or bathroom fittings

  • Heating and electrical installations

  • Decorating and finishing touches


These costs vary widely depending on your taste and requirements. For example, a basic kitchen might cost a few thousand pounds, while a luxury fit-out could be much more.


4. Unexpected Costs


Always set aside a contingency fund of around 10% of your budget. This covers surprises like:


  • Hidden structural issues

  • Delays due to weather

  • Changes in material prices


Being prepared helps keep your project on track and stress-free.


Is a 3 Metre Extension Worth It?


A common question I hear is whether a 3 metre extension is a good investment. The answer depends on your goals and property.


Benefits of a 3 Metre Extension


  • Cost-effective: Smaller extensions cost less but still add valuable space.

  • Planning permission: In many cases, a 3 metre extension falls under permitted development rights, meaning no planning permission is needed.

  • Improved flow: It can open up your kitchen or living area, making your home feel larger and more modern.


Things to Consider


  • Space needs: Will 3 metres give you enough room for your intended use?

  • Neighbour impact: Check if your neighbours might be affected or if there are any restrictions.

  • Resale value: A well-designed 3 metre extension can boost your home’s value, but it depends on the quality and finish.


If you want a practical, affordable way to add space, a 3 metre extension is often worth it. Just make sure you plan carefully and get professional advice.


Close-up view of a modern kitchen extension with large windows and open space
Modern kitchen extension with large windows

How to Keep Your Extension Costs Manageable


Extensions can get expensive quickly, but there are ways to keep costs under control without sacrificing quality.


Plan Thoroughly


  • Define your needs clearly before starting.

  • Get multiple quotes from reputable builders.

  • Choose materials that balance cost and durability.


Work with Trusted Professionals


  • Hire experienced builders familiar with Andover.

  • Use architects or designers to avoid costly mistakes.

  • Communicate regularly to stay on budget.


Consider Phased Building


If budget is tight, consider building in stages. For example, start with the shell and add interior finishes later.


Use Standard Sizes and Designs


Custom designs are great but can increase costs. Standard sizes and off-the-shelf products often save money.


Look for Local Suppliers


Buying materials locally can reduce delivery costs and support the community.


Final Thoughts on Andover Extension Pricing


Understanding the costs involved in an extension helps you make informed decisions. Remember, the key is to balance your budget with your needs and quality expectations. Whether you’re planning a small 3 metre extension or a larger project, careful planning and working with trusted professionals will make the process smoother.


If you want to learn more about andover extensions cost and how to get the best value, SB Renovations Ltd is here to help. They specialise in tailor-made building projects across Hampshire, delivering quality and reliability from start to finish.


By keeping these points in mind, you can create a beautiful, functional extension that enhances your home and lifestyle for years to come.

 
 
 

01264 392507

Corinthian Close, Andover, Hampshire SP10 5PU

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