Wrap Around House Extension - Greenwich, South East London

Project Overview

This project involved the construction of a 26.46 square meter wrap around extension for our clients. The primary need was to create a modern, thermally efficient additional space. The solution was a structurally robust, steel-framed extension finished with a sleek grey silicon render and high-performance glazing, all built on a ground screw foundation system.

USE:
Home Extension
size:
26.46 m²
TyPE:
Kitchen / Diner Extension
PROJECT VALUE:
97,000
DURATION:
60 days
location:
Greenwich, South East London

HOW WE DID IT

The project centred on adding a significant single-storey wrap around extension to their property. A key challenge was ensuring the new structure would seamlessly integrate with the existing building while providing exceptional thermal performance, meeting U-Values of 0.13 for the floor and roof, and 0.18 for the walls. This was achieved using a structural frame of 6mm gauge steel with M12 bolted connections, ensuring long-term stability and strength. The design specified structural insulated panels made from OSB and FSC-graded timber for the walls, floor, and roof, which were crucial for meeting the stringent thermal requirements.

The exterior was finished in a contemporary grey silicon render, complemented by bespoke black polyester powder-coated steel for the facia and corner profiles, creating a sharp, modern aesthetic. A significant aspect of the construction was the use of galvanised steel ground screws for the foundation, minimising disruption and providing a solid base for the structure. The project also included creating structural openings to connect the new extension to the existing kitchen and diner. Internally, the space was finished with plasterboard walls and ceilings, pencil-round skirting boards, and a provision for a high-quality plank-style floor.

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Seamless integration to existing house

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Additional living space

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10-year structural warranty

  • Modern Aesthetics: Finished with a stylish grey silicon render and bespoke black powder-coated steel trim details.
  • High Thermal Efficiency: Superior insulation achieving U-Values of 0.13 (floor/roof) and 0.18 (walls), ensuring a warm and energy-efficient space.
  • Durable Construction: Built with a 6mm gauge structural steel frame for maximum strength and longevity.
  • Innovative Foundation: Utilised a ground screw foundation system for rapid installation and minimal ground disturbance.
  • Comprehensive Warranty: Includes a 10-year structural warranty and a 2-year warranty on finishes for complete peace of mind.
  • Seamless Integration: Included all structural works to open up the existing house into the new extension.

Watch the video testimonial with the client:

benefits

Our modular buildings are designed, engineered and built to perfection

10 Year Warranty

We’re so confident in the longevity and performance of our structural steel frame modular buildings that we offer an industry-leading 10 year guarantee as standard.

Lead time

We are proud to offer an industry-leading guaranteed 6 week lead time from the date of order.

Bespoke

Our distinctive range of exterior cladding finishes and architectural embellishments is quite simply unparalleled. There are no limits to the space we can create for you.

One Price; No Hidden Extras

Our price includes everything from delivery, installation, foundations, doors & windows, painted walls, electrics, lighting and flooring, to name just a few.

Built to UK Building Regulations

Our modular buildings comply with all aspects of current UK building regulations, so you not only have complete peace of mind that your extension is built to last but you also have a space that can be comfortably used all year round.

Designed & Built in the UK

We use the most advanced modular construction technology to precision craft every modular building at our Warwickshire production facility.

Our Turnkey Process

How our Design & Build Process Works

From your first enquiry to the moment we hand over the keys, our six-step process is designed to be transparent, efficient, and built around a fixed price commitment.

Step 01

Enquiry

Complete our customer enquiry form for an instant fixed price so we can fully understand your project requirements. One of our dedicated team members will contact you to arrange a design consultation.

2 weeks
Step 02

Planning & Design

Where planning permission is required, our in-house design team prepares and submits all necessary drawings and supporting documentation on your behalf.

12 weeks
Step 03

Contract

We'll issue a fully regulated JCT fixed price contract covering our terms and conditions, technical drawings, agreed payment plan, and a committed installation date — giving you total cost certainty and peace of mind.

1 week
Step 04

Manufacture

Our team begins manufacturing at our Warwickshire production facility to hand-craft your modular project, and books in our installation crew for the agreed date.

4 weeks
Step 05

Installation

Around a week before the agreed install date we'll confirm any final arrangements. Our installation team arrives on the morning of your install date, ready to build.

6 weeks avg
Step 06

Handover

We complete final snagging and walk you through your new space, providing all completion and compliance certifications — including full building control sign-off — before handing over the keys.

Ready to start? Get your instant fixed price today.

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