
Rear single-storey extension and internal remodelling
Project Overview
This project in Ormskirk involved the construction of a single-storey rear extension, internal remodelling, and an upgraded front porch. The scope included a new open-plan kitchen and living space, the addition of a ground-floor bathroom, reconfiguration of first-floor storage, installation of LVT flooring throughout the ground floor, and a full internal repaint. The porch was thermally upgraded, and a new electric combination boiler was installed along with underfloor heating in the extension.
The extension was constructed using a timber frame with brick cladding and features a vaulted roof with roof lights and bifold doors opening to the garden. Restricted rear access required careful planning to deliver large items such as the doors.
Project Context
The clients wanted to increase their ground floor living space, improve thermal performance, and modernise several areas of their home. Located in a quiet residential area, the property offered a good base for transformation but came with logistical challenges due to limited rear access.
Our focus was on improving layout, energy efficiency, and usability, while maintaining high-quality finishes throughout. The porch upgrade, internal alterations, and external works were designed to create a more functional and cohesive home.
Design and Architectural Features
Working to designs by Architecture Unknown Ltd, we carried out the following key works:
- Rear Extension: Constructed with a timber frame and brick cladding, the extension includes a vaulted ceiling, roof lights, bifold doors, and underfloor heating.
- Porch Upgrade: We remodelled and thermally lined the porch to reduce heat loss and improve usability.
- Kitchen Remodel: The kitchen was redesigned and installed to integrate with the new open-plan space.
- Ground-Floor Bathroom: A new bathroom was created for improved accessibility.
- Internal Alterations: This included reconfiguring the first-floor bathroom and storage cupboards, installing new garage doors, laying LVT flooring throughout the ground floor, and repainting the interior.
Construction Methodology
We delivered the project through the following steps:
- Extension Build: The rear extension used a high-performance timber frame and brickwork to match the existing house.
- Roof Installation: The vaulted roof structure incorporated roof lights for natural light and thermal performance.
- Thermal Upgrades: We thermally lined the porch and ensured airtightness in all new junctions.
- Heating: We installed electric underfloor heating in the extension and upgraded to a new electric combination boiler.
- Bifold Door Delivery: Due to limited access at the rear, the doors were brought in via a neighbour’s property, along a ditch.
- Internal Works: Kitchen and bathroom installations, cupboard reconfigurations, new flooring, garage doors, and repainting were all delivered to a high standard.
We estimate the extension achieves U-values between 0.15–0.20 W/m²K, consistent with current domestic standards.
Sustainability and Energy Efficiency
- Timber Frame: Used for its renewable properties and insulation performance.
- Underfloor Heating: Paired with an electric boiler, offering efficient low-carbon heating.
- Porch Insulation: Reduced heat loss at a key entry point.
- Natural Light: Roof lights reduce dependency on artificial lighting.
- Durable Finishes: LVT and brickwork reduce long-term maintenance requirements.
Challenges and Solutions
- Rear Access: Large elements, including bifold doors, had to be delivered through a neighbouring property. We coordinated this with the neighbour in advance to avoid delays.
- Structural Integration: The new extension and porch were tied into the existing building with attention to airtightness and insulation.
- Precision Detailing: The roof shape, roof lights, and heating system required precise installation to meet performance goals.
Client Experience and Outcomes
The clients were pleased with the result, particularly the new open-plan space that connects to the garden. The roof lights and bifold doors have made the extension a bright, usable area. Other improvements—including the new bathrooms, LVT flooring, and storage upgrades—have increased comfort and practicality across the house. The thermally improved porch and upgraded heating system contribute to long-term energy efficiency.
Project Team
- Architect: Architecture Unknown Ltd
- Contractor: Barra Projects Ltd
Conclusion
This project demonstrates our ability to deliver high-quality domestic upgrades, including complex extensions and thermal improvements, even on sites with logistical challenges. The combination of practical upgrades and attention to energy performance has significantly improved the home’s layout, efficiency, and value.





