Cost of Home extension
Planning a home extension is an exciting opportunity to transform your living space, but understanding the costs involved is key to ensuring a smooth process. At M1 Architecture Ltd, we believe in helping homeowners make informed decisions by providing clear insights into what goes into the cost of a home extension.
Key Factors That Affect Home Extension Costs
Size and Scale The size of your extension is one of the biggest factors impacting costs. A small, single-story extension will cost significantly less than a large, multi-story project. Typically, costs are calculated per square meter, with averages ranging from £1,200 to £2,500+ per square meter depending on the specifications and the area you live.
Design Complexity Unique architectural features, bespoke designs, and non-standard layouts may increase the complexity of your project and, consequently, its cost. Open-plan extensions or those with extensive glazing often require additional structural considerations.
Materials The choice of materials plays a major role in determining costs. Premium materials such as natural stone, high-quality timber, or specialized glass will increase your budget, whereas standard materials can help keep costs manageable.
Planning and Approvals Extensions requiring planning permission may incur additional costs for applications, surveys, and architectural plans. Some projects may fall under permitted development rights, which can reduce costs and timelines.
Contractors and Labour Labour costs vary based on location, the level of expertise required, and the duration of the project. Hiring experienced professionals ensures quality but may come at a premium.
Utilities and Services Extensions that require new plumbing, electrical wiring, or HVAC systems will increase costs. Kitchens and bathrooms, in particular, often involve higher expenses due to the need for specialized services.
Average Cost Estimates
To help you plan, here’s a rough guide to home extension costs:
Basic single-story extension: £20,000 – £40,000
Double-story extension: £40,000 – £75,000+
Kitchen or bathroom extension: £30,000 – £50,000
Loft conversion: £25,000 – £60,000
Tips to Stay Within Budget
Set a clear budget: Work out your maximum spend and factor in a contingency fund of 10-15%.
Choose the right professionals: Work with experienced architects and builders who can guide you through cost-effective solutions without compromising quality.
Focus on essential upgrades: Prioritize features that add value and functionality to your home.
Research planning requirements: Understand whether you need planning permission or can proceed under permitted development.
Invest in Your Dream Home with Confidence
A well-planned home extension can significantly enhance your property’s value and functionality. At M1 Architecture Ltd, we specialize in designing extensions tailored to your needs and budget. Contact us today to discuss your project and receive expert guidance every step of the way.
Let’s design your perfect home extension together!