Are you looking to expand your living space with a house extension in London? Whether you need a rear extension, a side return extension, or a double-storey extension, our expert team specialises in delivering high-quality, tailored solutions to enhance your existing home. We handle the entire process, from permission and building regulations to project management and construction. Our experienced build team ensures a smooth, stress-free experience, helping you create a stunning, cost-effective extension that perfectly suits your lifestyle.

Why choose redline house extensions

Bespoke House Extensions: Custom designs tailored to your needs.
Complete Project Management: A dedicated project manager overseeing the build.
Expert Planning & Design: Assistance with planning permission and party wall agreements.
High-Quality Construction: Using the right materials for durability and aesthetics.
Competitively Priced: Transparent pricing with no hidden costs.
Extensive Experience: Proven expertise in house renovations and extension projects.

We handle everything for your loft conversion, home extension, or renovation project.

Types of House Extensions We Offer

Many London homeowners face limited space challenges, but moving house isn’t always a practical solution. A loft conversion offers a cost-effective way to expand your home without the disruption and expense of relocating.

Rear House Extension

Ideal for those looking to add more space at the back of their home, a rear house extension seamlessly integrates with your existing home, creating an open-plan kitchen extension or additional living space filled with natural light.

Side Return Extensions

Perfect for terraced houses and semi-detached homes, a side return extension makes the most of unused outdoor areas, enhancing your home extension project with a stylish, functional space.

Double-Storey Extensions

A double-storey extension maximises your house extension, providing extra bedrooms, a new kitchen, or additional modern spaces while increasing property value.

Single-Storey Extensions

A single-storey extension offers a practical way to extend your home, whether you need a new space for a home office, an apartment refurbishment, or an enhanced kitchen installation.

Understanding House Extension Costs & Planning

The cost of extending a house depends on many factors, including size, location, and design. Our expert team provides a free consultation to assess your needs and budget, ensuring a clear work schedule and estimated time frame. We also navigate permitted development rules, London borough regulations, and building works requirements to give you complete peace of mind.

Enhance Your Home with a Seamless House Extension Project

Whether you’re expanding for a growing family or adding extra rooms for rental opportunities, our home construction specialists deliver high-quality extensions in London. From contemporary designs to traditional renovations, we ensure a flawless experience with minimal additional cost and maximum efficiency.

House Extension PROJECTS

Get Started on Your Home Extension Project Today

As a leading design and build company, we make the big project of home extensions stress-free and enjoyable. Contact us for a free consultation today, and let’s bring your dream Storey house extension in London to life.

Request a free consultation

For all enquiries, please contact us by email in the first instance info@redlinebuilding.co.uk

"The Redline team was exactly what we were looking for, a reliable building company that are great to work with. They are very skilled tradesmen and always courteous. Some complex design changes and unusual finishes all taken within their stride. Highly recommended!"

THEO BULMER

“High-end finish, great communication, very flexible with an eye for detail, reliable and works to schedule. Always our first port of call for studio fit out.”

PETER JOHNSON - ONE TEN PRODUCTIOns

“We are impressed with Redline’s commitment to getting the job done on time, in budget and to the highest professional standards - often in the face of unforeseeable complications and difficult working environments.”

MD - WARREN LAND & PROPERTY

“The key to our successful relationship was Ben's unwavering attention to detail and daily presence on site. His team were able to tackle a complicated project within the constraints of a grade II listed building.”

MARC B - PENTHOUSE APARTMENT, LONDON

Transform Your Home with Bespoke House Extensions London