Rear & side extensions
Discuss the footprint, garden connection and intended use of a rear or side addition.
Home / All trades / House extensions
PRINCIPAL PRIME EIP · LONDON
Create a natural extension of the home you already value. From groundwork and structural work to the final interior details, we consider how the new space will connect with the existing property.
See our existing installation footage →PRINCIPAL PRIME EIP
Photographs from our team’s project archive: completed details and genuine installation stages, with the year shown where recorded.






THE WORK
Agree what is included, what needs investigating and where specialist input is required.
Discuss the footprint, garden connection and intended use of a rear or side addition.
Plan openings, structural work and temporary protection alongside the construction sequence.
Coordinate kitchen layouts, lighting, heating and the connection between new and existing rooms.
Bring roof details, drainage connections, plastering, joinery and finishes into the written scope.
Ground conditions, access, structural requirements, drawings and specifications affect the quotation. Professional appointments and approvals are agreed before the building stage.
FROM FIRST CONTACT TO AN AGREED PLAN
Your postcode, photographs of the property, the space you want to create and any plans already prepared.
Discuss condition, access, materials and the intended result. A site visit or specialist review is arranged where the scope needs it.
Review the written scope, exclusions, quotation and availability before booking. Any proposed extra work is discussed rather than assumed.
TELL US ABOUT YOUR PROJECT
Your postcode, photographs of the property, the space you want to create and any plans already prepared.
Discuss the scope first. A quotation, availability and the next steps are agreed before any work is booked.
info@principalprime.co.ukUSEFUL QUESTIONS
Yes. Send the current drawings and specification, together with the status of any professional appointments and approvals, so the proposed building work can be reviewed.
Yes. Photographs and a short description help with the first conversation. They do not replace a site inspection where condition, measurements or concealed work need to be established.
Our core areas are Knightsbridge, Fulham, Chelsea, Mayfair, Belgravia and Kensington, with wider central and west London coverage. Send the project postcode so availability can be checked.