Alexander Home Extensions was established in Milton Keynes in 1984. That's over 30 years trading under the same name, and we have completed more than 420 projects in and around Milton Keynes during that time. Our specialty is in home extensions, garden rooms and conversions - creating more space or transforming existing space in your home.

Most of our clients are returning customers who keep coming back and recommend us to friends and family, something we are very proud of as reputation is of the utmost importance in the building industry.

Here's a quick overview of what you can expect when you employ our services:

We will not ask you for an up-front deposit.

All our work is guaranteed, with the additional option of Federation of Master Builders Master Bond Warranty.

We use the FMB's 'F220 Domestic Contract', a 'Plain English' contract for commercial and domestic services that is easy to understand.

We only use Gas Safe Engineers and NICEIC Qualified Electricians.

We make a point of clear communication, emphasising transparency with a step-by-step Schedule of Works that ensures you can see exactly what we are doing, when we are doing it and how much each stage costs, with no surprises.

We will treat your home with the utmost respect at all times.

We hope that once you have compared our prices, you will find them fair and realistic. The prices are also fixed, unless the original specification is altered by you, your architect, or the building inspector.

We would never risk ruining our good name in the local area by doing shoddy work, so you are in safe hands!

Alexander Home Extensions cover: Home Extensions, Garden Rooms, Garage Conversions, Barn Conversions, Disability Conversions, Full project management, Roofing, Suspended ceilings, Partitioning, Plastering, Lighting and electrics, Plumbing & heating and Landscaping.

Trades offered

Builder general
Patios and Driveways
Block Paving
Garage conversions
Loft conversions
General extension

Customer testimonials

16 May 2022

I have been dealing with this business for a number of years and I just felt that I needed to take time out to say how impressed I have always been with their professionalism. This is an honest, hardworking family business that focuses on quality and service. With over 30 years under their belt they have also built an enviable team around them and a reputation to match. It's not often that you get 'peace of mind' when dealing with trades these days! I look forward to working with them again. - Simon E

Milton Keynes