Lean To Extensions

West Midlands Building Company is the trusted lean-to extension builder in Birmingham, the West Midlands and surrounding areas. Unlike other companies, we provide a complete start-to-finish building service, meaning everything is handled under one roof for your convenience.

Here are some of the types of lean-to extensions we can provide:

  • Glass lean to extensions
  • Tiled lean to extensions
  • Lean to rear extensions
  • Side lean to extensions
  • Lean to kitchen extensions
  • Small lean to extensions

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Why Choose WMBC?

Complete Project Management

We manage everything in-house, including design, build, and finishing touches.

Architectural Drawings & Planning

Our architects handle all drawings, permissions, and regulations for you.

High- Quality Material

We use premium materials sourced directly from our own Builders Merchant for unbeatable value.

10-Year Guarantee

Every project comes with a full decade of aftercare and a workmanship guarantee.

Payment Options & Flexibility

From concept to completion, we handle every stage of your renovation in-house — design, build, installation and aftercare — meaning no third-party contractors and a seamless experience from start to finish.

Flexible Payment Plans

Spread the cost of your renovation through staged payments that align with your project milestones.

0% & Low-Rate Finance Options

Choose from a range of finance plans, including interest-free options on qualifying projects.

Deposit Protection & Secure Payments

Your deposit is fully protected, and all payments are handled safely through trusted, regulated partners.

A Proven Track Record

We have a proven track record of completed projects that are aesthetically beautiful, functional, and energy efficient. We, alongside our sister company West Midlands Double Glazing, have a portfolio unlike any other builder or construction company in the region. 

The Process

Fill out a form or give us a call to book in for your FREE consultation where you can tell us all about your renovation needs & requirements, and we can provide our expert advice. If you fill out a contact form on this page, we’ll be in touch within 24 hours.

One of our representatives will come out to see you for your initial consultation where we discuss all of your renovation desires and requirements in detail, and they’ll then return for a secondary consultation once they have designed your home improvements in our 3D modelling software. This allows you to get an extremely realistic idea of how your renovation will look, and give you a chance to provide any feedback or design changes you’d like to implement. 

Choose from the aforementioned payments plans. Whether it be interest, 0% interest or buy now, pay later, we’ll be able to find a flexible plan to meet your budget requirements. 

Once your payment plan has begun, our office team will give you a call to introduce themselves and will set up your dedicated WhatsApp group shortly after. It will include all relevant team members and your assigned Renovation Installation Manager who will serve as your main point of contact throughout the process.

Our architect will then visit the site in order to create the architectural drawings. These drawings are then passed over to our structural engineer who will in turn make the structural calculations based on this. We then submit the architectural drawings and structural calculations to Building Control. Before both get sent off, we will require your sign off giving you a chance to look everything over once more prior to submission. We will also submit the relevant applications to Severn Trent.

Once we have the go ahead from Building Control and, if required, the Planning Department from your local council, as well as any other relevant bodies — your project works start date will be issued! 

Your works will begin and our specialist teams will start to bring your dream renovations into reality. Typically, the works will follow these stages: Foundations, Brickwork, Roof Installation and Completion. Each of our teams are courteous, tidy and consummate professionals who will always show the utmost respect to your property.

After approximately six weeks, your renovations will be completed! At this point in time, we will provide you with the following certifications: Building Control Completion Certificate, Electrical Certificate, Gas Safe Certificate (for any gas works), and a FENSA certificate (for windows and doors). At WMDG, every process is followed to the letter. Just a reminder… we provide a comprehensive 10 year guarantee on all works to give you peace of mind regarding your new renovations for the next decade. Now… you can start your brand new home life! 

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Ready to Start Your Project?

Tell us a bit about your project, and one of our specialists will be in touch to discuss design ideas, pricing, and finance options.

Lean To Extensions Designed to Transform Your Home

A lean-to extension is a smart, space-efficient way to extend your home without the upheaval of moving. Designed with a simple, sloping roofline, lean-to extensions are ideal for creating bright, functional spaces that blend seamlessly with your existing property.

Whether you want to enlarge your kitchen, add a relaxed family area or improve the connection between your indoor and outdoor space, a professionally built lean-to extension can transform how your home works for you while adding lasting value.
Professional Lean to Extension Specialists

Choosing the right specialists is essential for a successful lean-to extension. From the initial design consultation through to final completion, we manage every stage of your project. Our structured approach ensures a smooth, efficient build and a lean-to extension that complements your home perfectly.

Experienced Lean to Extension Builders

Our experienced builders have delivered high-quality lean-to extensions across a wide range of property styles. With in-depth knowledge of lean-to construction, roof design, structural integration, and finishes, we ensure every extension is practical, durable and completed to an exceptional standard.

Fully Insured & Accredited Extension Company

For total peace of mind, we are fully insured and accredited. Every lean-to extension we build complies with current building regulations, safety requirements and industry best practices, ensuring a safe, compliant and professionally finished result.

Is a Lean-to Extension Right for Your Home?

Lean-to extensions are a popular choice for homeowners who want to add space while keeping costs, timelines and disruption to a minimum. Their straightforward design makes them suitable for many property types, particularly where space is limited or a simple, effective extension solution is needed.

Benefits of Lean to Extensions

Lean-to extensions provide valuable extra living space while maximising natural light through features such as roof glazing and large doors. They improve the flow between rooms, create a more open feel and offer a practical way to modernise your home without altering its overall character.

Planning Permission & Building Regulations

Many lean-to extensions fall within permitted development rights, meaning planning permission may not be required. We advise you on all planning considerations and handle building regulation compliance, ensuring your lean-to extension meets all legal and technical requirements.

Types of Lean-to Extensions We Build

We design and build bespoke lean-to extensions tailored to your property layout, lifestyle needs, and budget.

Rear Lean-to Extensions

Rear lean-to extensions are ideal for expanding kitchens, dining areas or family spaces. Their simple roof structure allows for excellent natural light and creates a smooth transition between your home and garden.

Side Lean-to Extensions

Side lean-to extensions make effective use of unused side space to create additional rooms or widen existing areas, all while maintaining a balanced and proportionate appearance.