Loft Conversion


What's included in a Free Consultation?

Amazing Case Studies

The Almeric Road Project

Clapham Construction Service was appointed to undertake this complete renovation project by our clients. The works involved converting a single 3 storey home in Clapham into 3 separate self-contained apartments.

The project involved adding a basement to the ground floor, which also benefited from a rear wrap around extension to increase both the living space as well as the number of bedrooms this property was able to house. We also added a Mansard loft conversion at the top of the property to create the 5th and final floor of the building.

A rewarding project, converting an old run-down property to into three separate dwellings to provide new living spaces in a beautiful area. Breathing new leases of lift into these projects are what we absolutely love to do, whether this be for a young family, working professionals or group of friends, we are positive the new owners will enjoy this space for years to come.

loft conversion
Here are our



From the smallest Loft Conversion to entire new floors we can build it for you. London Loft Conversions are our speciality. We provide a the most comprehensive service on the market.


We provide the complete range of house extensions in London from A-Z. All shapes, all sizes and 100% bespoke. We have a large portfolio to inspire you and we know how to build quickly.

Free Consultations

We believe in providing honest and open advice. We have decades of experience and we are happy to share it. If you need advice, a home consultation or a detailed specification and quote contact us and our service is free.

We have a lot to look at

Stunning Looks & Functionality

Full Accountability

We own our business, we sell you our service and
then we manage your project for you directly on site.

10 Year Protection

All our projects come with a 10 year protection warranty.
Our warranty cover is one of our key elements

Unbeatable Prices

Our prices, like us, are straight forward and laid out right at the
beginning and  do not change unless you want it to, prices
are fixed, guaranteed!

100% Customer Focus

Just ask our clients, they will not only tell you, but show you what
we do and what sets us apart in the market.

Detailed Specification

We offer full specifications so you know exactly what
you’re getting. No surprises.

View Warranty and Insurance
What our clients have said


Clapham Construction Service completed our loft conversion. We are extremely pleased with the results. The work is of extremely high standards. It was important to us to have people we can trust. We are so happy – Thank you Dangis and Alfred.

Frank Waithright

Clapham Construction Service built our loft in Dulwich. I found them very professional right from the consultation to completion. The project management team were very informative, and the build quality is exceptional. I had a couple of delays regarding the snagging stage at the end, but they informed in advance and works were finished well. I own a mechanic franchise and wish I had these guys working for me.

James De Ville

Both I and my wife would like to extend our sinceres thanks to you for everything you did for us in ensuring a success completion of our loft conversion. We are very pleased and happy with the ends result. It meets and exceeds our expectations. We wish to you great favour and fortune in the future.

Liu Jianguo

We are very pleased in dealing with Clapham Construction Service
to build loft conversion. Clapham Construction Service has nothing but constant good service; follow up 8 weeks on site and fixed price for loft conversion. I cannot express how grateful and appreciative my wife and I are for the fantastic new room in loft. Thank you once again.

Emma G

Quill Lane

Rear Dormer Conversion
incorporating the retained
chimney into the design.

Hillbrook Road

Rear Dormer conversion
with Juliet Balcony.

Courcy Road

Loft Conversion with
exposed brickwork

Case Studies

See what we can do and get some ideas!


Whats included in a Free Consultation?

Our consultations can usually last from 20 minutes to one hour depending on whether you just want a fixed price quote, or you would like some advice on your options and knowledge on what’s involved in undertaking a Loft or Extension project.

We will also provide you will a written Fixed Price Quotation
following the meeting and some key materials on the things
we have discussed for reference.

Here’s what we are able to cover in our consultations:

  • Review the suitability of your property for the proposed project
  • Conduct some prior planning research to review your options
  • Discuss specification and options available for the works
  • Discuss things to budget for… beyond our works to complete
    the build
  • Provide you an introduction to:
  • The Design Process
  • The Build Schedule and Timing
  • Building Regulations
  • Partywall Matters
  • Provide you with a No Obligation
  • Fixed Price quotation
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