A more enjoyable and spacious home with Avalon Building, Extensions & Conversions

You love your home - but you’d like it to be a little bit more.

More spacious, more modern, more stylish and with the perfect layout to suit your family. In general, just a bit more wow!

Whether you need a home office, a bedroom for your au pair or space for your ever-growing teenagers, Avalon can create it for you.

We will extend or convert your house to create stunning new rooms that give you the space you need.

And after we’ve finished, you will see a significant increase in the value of your home.

A Complete Extensions and Conversions Service

We are experienced in working with architects, designers, engineers and building & planning regulators on all forms of extensions and conversions, including:

• Loft conversions
• Basement conversions
• Garage conversions
• Barn & outbuilding conversions
• Side return extensions
• Constructing conservatories
• Building a new garage
• Structural changes, including integrating two small rooms into one large space and adding or removing a floor
• Roofing
• Adding porches and building brick walls
• Landscaping including constructing garden walls & gates
• Interior Decorating
• Exterior renovations and decorating
• Full compliance with safety, building and planning regulations
• Completion certificate at the end of the project
• Covered by Avalon’s 12 month Guarantee and the Consumer Protection Guarantee.

Our extensions and conversions always meet all the planning, building and safety regulations.  

You will not have any problems passing your buyer’s survey when sell your home.

The Service that You Deserve from Avalon

100% of our jobs are finished on time and on budget - as specified in the original project plan.

Your property renovations will begin with a visit from our building surveyor.  He will plan the project and prepare an estimate for you.

Our project manager will make sure that your project runs smoothly and on budget.  He will co-ordinate the work of the builders and craftsmen. And he will keep you fully informed about the progress of the work.

We will prepare & finish each job properly and solve any underlying problems.  This means that our work will last a long-time.  

You will be covered by our public and employer’s liability insurance during the work.  For projects worth more than £250,000, we will take out additional insurance that is tailored to the specific conditions.

At the end of the job, your house will be tidied and cleaned.  Our builders and decorators are always considerate and polite. 

You can relax with Avalon.

Our Avalon Guarantee

We guarantee all our work for 12 months.   If you find any defect, we will fix it without charge.

If you sell your house within a year of the project, our guarantee will pass to the new owner. 

• 98% approval from our clients on Checkatrade
• 97.5% rating from our clients on Constructionline (compared to the national average of 80%).

Our builders are properly trained with qualifications from:

You can find out more on our credentials page

Recommendations from our Extensions & Conversions Clients:

“We can't begin to describe how the work has made our home better. Financially, the cost of the investment has given us an uplift that is double the cost of the work. However, more importantly, the new layout and finishings has made this flat one that we can live in for more years to come, so much so that my fiance proposed in our new living room! The layout is fluid, the space feels bigger and the finishing is exquisite. Had we not done it, we would have had to have found a bigger and more modern flat."   Yuki - Notting Hill, London

You can find more recommendations on our testimonials page.