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PRINCIPAL PRIME EIP · LONDON

House extensions.More space. Still your home.

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 →
Bifold doors connecting the extension and garden
Bifold doors connecting the extension and gardenProject photograph
Extension roof construction and weather membrane
Extension roof construction and weather membraneConstruction stage
Concrete extension base with brick perimeter walls.
Concrete extension base with brick perimeter wallsWork in progress · 2015. Principal Prime EIP archive; serving London.
Brick and block cavity walls during extension construction.
Brick and block cavity walls during extension constructionWork in progress · 2014. Principal Prime EIP archive; serving London.
Reinforcement and formwork before the foundation pour.
Reinforcement and formwork before the foundation pourWork in progress · 2014. Principal Prime EIP archive; serving London.
Poured concrete foundations during an extension project.
Poured concrete foundations during an extension projectWork in progress · 2014. Principal Prime EIP archive; serving London.

THE WORK

What we can help with.

Agree what is included, what needs investigating and where specialist input is required.

Rear & side extensions

Discuss the footprint, garden connection and intended use of a rear or side addition.

Structure & openings

Plan openings, structural work and temporary protection alongside the construction sequence.

Kitchens & living areas

Coordinate kitchen layouts, lighting, heating and the connection between new and existing rooms.

Roofing & finishing

Bring roof details, drainage connections, plastering, joinery and finishes into the written scope.

Before a price is agreed.

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

Clear steps. No assumptions.

  1. Show us the starting point

    Your postcode, photographs of the property, the space you want to create and any plans already prepared.

  2. Review the practical details

    Discuss condition, access, materials and the intended result. A site visit or specialist review is arranged where the scope needs it.

  3. Agree the work

    Review the written scope, exclusions, quotation and availability before booking. Any proposed extra work is discussed rather than assumed.

Existing customer profiles and plumbing work remain available: read customer review profiles · view installation footage.

TELL US ABOUT YOUR PROJECT

A clear starting point.

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.uk

This prepares a draft only. Nothing is sent until you open WhatsApp and choose to send it. Do not include passwords, alarm codes or payment details.

USEFUL QUESTIONS

Before you get in touch.

Can you work from drawings I already have?

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.

Can I send photographs before arranging a visit?

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.

Which areas do you cover?

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.