# Loft Conversions

> Hip-to-gable, dormer and mansard conversions. Standalone or part of a whole-house scheme.

## Overview

Loft conversions are one of HXL's most-delivered scheme types. Hip-to-gable, dormer, mansard and L-shaped configurations across London and the Home Counties, delivered either as standalone projects or as part of a larger whole-house refurbishment under JCT Standard Building Contract. Structural engineering, Building Regulations, Party Wall awards and Part L compliance are coordinated in-house.

## Capabilities

- Hip-to-gable conversions
- Dormer conversions (front, rear and side)
- Mansard conversions in conservation areas
- L-shaped dormer for terraced and semi-detached homes
- Roof-light only loft conversions
- Structural steelwork design and certification
- Part L energy compliance and insulation upgrade
- Party Wall award coordination

## Process

### 01. Feasibility & cost plan

Site visit, scheme assessment, planning route, fixed cost plan returned within 2 weeks.

### 02. Drawings & consents

Architect drawings, Building Regs Full Plans, Party Wall service if required.

### 03. On site

Steel install, structural opening, weatherproof envelope, first and second fix, interior finish.

### 04. Sign-off

Building Control completion certificate, Party Wall acknowledgements, 12-month workmanship warranty.

## FAQ

**What does a loft conversion cost in London?**

Standalone dormer or hip-to-gable from £90k. Mansard schemes in conservation areas from £140k. Structural and Part L compliance included. Whole-house refurbishments incorporating a loft sit £500k+.

**How long does a loft conversion take?**

Typical standalone dormer: 12 to 16 weeks. Mansard or complex structural: 16 to 22 weeks. Within a whole-house programme it is sequenced with the rest of the works.

**Do you handle planning?**

Yes. Many loft conversions fall under permitted development, but conservation areas, Article 4 streets and mansards usually require a planning application. We handle both routes in-house.


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**HXL Construction Ltd** · Principal contractor and design & build firm · London and the Home Counties
Email: info@hxlconstruction.com · Phone: +44 7845 585147
Registered office: 102 Vine Lane, Uxbridge, London UB10 0BE
Canonical: https://hxlconstruction.co.uk/services/loft-conversions