Design & Build – Loft conversion for residents in Wandsworth

APT Renovation – Design & Build with in-house Architectural Designer and engineers put full commitment to your loft conversions and loft extensions  project. We ensure to keep everything at your convenience from first initial site visit consultation at your property in Wandsworth to a final stages of loft conversion to full fill your satisfaction. During the site visit our project managers will meet with you to evaluate and discuss all requirements of the loft conversion. We can send you email with rough estimate for the project requirements.

Your loft conversions project will be carried with our own team of professionals who are working in the field for a quite long time. Our exceptional team of highly qualified and experienced professionals include:

Architectural Designer, structural designers, planning and building regulation specialists, site surveyors, fully managed building managers, project managers and experienced builders.

You can be assured that APT Renovation will design drafts, obtain planning permission and build your loft conversion to the highest standards, using materials of the finest quality.

However, if you wish to use your own Architectural Designer, designers and quality control check we are more than happy to work with your own nominees.

Design & Build

Loft conversion or loft extensions is a great way to increase space by adding extra room to and existing building. By extending your unused loft space you can create new bedroom, bathroom, or sky light playground for kids. Possibilities can be outstanding whilst you should ensure it will comply with planning permission loft conversion regulations of your local authority. Hence, our company is fully capable to take care everything and ensure quality at all times.

We are also able to provide sketches and accurate 3D CAD designs to visualize your project before hand.

Many clients ask “can we still live in our house during works? Our answer is a simple Yes ! As 80% of materials will be brought in via the roof.


The types of loft conversion designs you can consider having are Dormer, Mansard, Hip to Gable and Velux projects, depending on the existing layout of the roof and certain restrictions that may come into force will determine the kind of loft conversion you will be permitted by the local authority to go ahead with. APT Renovation can advise you when we make our free no obligation visit.

Mansard Loft

Dormer Loft

Hip to Gable

Velux Loft

Portfolio of completed loft conversion projects in Clapham and surrounding areas.

Stages of your loft conversion and loft extension projects.

From initial meet up at your property our office team will always be available as is your Project Manager to advise you should you need it and are happy to help in any way they can. We do not contract our work out so you will see the same team every day.

APT Renovation are happy to supply you with a fully inclusive service, from initial meeting with our Architect, submitting plans to local authority, building control application and Structural Engineers calculations and drawings, right through to carrying out the works as detailed in your Schedule of Works. However, we are also happy to work with your own Architect and design team.

Upon commencement of works you will be introduced to your Project Manager who will be onsite all day every day and will be your first point of contact should an issue arise or just to ask how the project is progressing. If required your project configuration and modelling and regulation documents will be submitted to you local council authority.

A Building Inspector will visit at regular stages throughout the project, their job is to make sure that we are adhering to all the latest building regulations. Upon completion of works The Building Inspector will make a final visit and you will be issued with a completion certificate.

Upon completion of all works and having gained approval from The Building Inspector we will supply you with all relevant safety certificates.


A Building Inspector and Project Manager will visit you at your property at regular stages throughout the project, their job is to make sure that we are adhering to all the latest building regulations. Upon completion of works The Building Inspector will make a final visit and you will be issued with a completion certificate.

Get a Free Quote

[gravityform id=”1″ title=”false” description=”false” ajax=”false”]

Planning Permission

APT Renovation have a Central and South West London focus and are always well abreast of the developments in local planning permission guidance and building control.

We are also familiar with the property types and architectural profile of this region meaning that the design work we undertake will be sensitive and well applied to your property.

Obtaining planning permission for your property conversion need not be an arduous affair for our clients as we will undertake all such necessities.

Our staff are excellent communicators and always adhere to proven project management best practices to ensure an exemplary finish.

Building Control

We provide Building Control approval specialist services for all types of residential projects in Wandsworth. Our swift and responsive technical expertise means that we are able to viable and safe buildings. We are here to assist you with all Building Regulation process, however our expertise in all aspects of the property industry gives us a unique approach.
Our Building Control covers following:

Residential – Property re-modelling, house and kitchen extensions, loft conversions, basement conversion, and internal alterations.
New homes – Flats, houses and attic conversions.

Our comprehensive approach to building control delivers a professional, speedy and simple service across all sectors.


View APT Renovation Limited in Google Maps.


Our Awards / Partners

Popular searches: Loft Builders near you, Loft conversion consultants, loft cost calculator, Loft design and ideas, Loft conversion contractor in london, roof conversion

Study shows that average cost of loft conversion: £45.000

However we only accept projects from £65.000