House Extensions Birmingham
More Space. More Value Built around your home
TessCon builds high-quality house extensions across Birmingham, including kitchen extensions, single-storey extensions, double-storey extensions, and garage conversions. Fully managed from start to finish.
Want a house extension? Get a quote today
Experienced builders delivering exceptional results
Trusted House Extension Builders in Birmingham
Looking for reliable house extension builders in Birmingham?
TessCon helps homeowners create more space with professionally built home extensions, kitchen extensions, garage conversions and domestic renovation work.
Whether you want to add a larger kitchen, create an open-plan living area, build a home office or extend your property for a growing family, our Birmingham building team can manage the work with care, clarity and attention to detail.
Your Dream Home Extension Starts Here
House Extensions are a great way of gaining extra space in your home and are generally more affordable and less disruptive alternatives to moving. With the cost of moving home running into thousands of pounds, it could make more sense to add more space to your house.
Extending your existing kitchen into the side return extension can create a stunning new kitchen/living area or family room. The finished result is well-lit, waterproof and insulated. It will be much admired by visiting friends, family and neighbours!
A professional house extension can also add value to your property and can increase your house’s value by 20%.
Over the years we have completed all types of House Extensions in Birmingham for many satisfied customers.
Garage Conversions
Garage conversions are an excellent way to unlock additional living space within your existing home.
Whether you need a home office, an extra bedroom, or a cosy family room, converting your garage offers a cost-effective solution that adds both value and functionality to your property.
Birmingham based
Local builders you can reply on.
20+ years' experience
Skilled, reliable, and highly experienced.
Full project managed
We handle everything from start to finish.
Quality workmanship
Built to the highest standards.
Detailed Quotes
Clear, transparent and competitive.
Types of house extensions we build
Every home is different. We build a wide range of extensions to suit your property, lifestyle, and budget.
Single Storey Extensions
Perfect for larger kitchens, open-plan living and family spaces.
Double Storey Extensions
Add space downstairs and upstairs for growing families.
Kitchen Extensions
Create the heart of your home with a beuatiful new kitchen.
Garage Conversions
Convert your agarage into a home office, bedroom, gym or playroom.
How much does a House Extension Cost in Birmingham?
The cost of a house extension in Birmingham depends on the size of the build, the type of extension, access to the property, structural work, foundations, roofing, glazing, electrics, plumbing and the level of finish required. A simple garage conversion will usually have a very different cost profile from a large wraparound or double-storey extension.
At TessCon, we provide clear, detailed quotations so you can understand what is included before work begins. The best way to get an accurate price is to arrange a site visit and discuss your plans, property and budget.
| Project type | Typical use | Main cost factors |
|---|---|---|
| Single-storey extension | Kitchen, dining or living space | Size, foundations, roof, glazing, electrics |
| Side-return extension | Wider kitchen or dining area | Structural work, drainage, party wall considerations |
| Wraparound extension | Larger ground-floor redesign | Steelwork, roofing, layout changes, glazing |
| Double-storey extension | Bedrooms, bathrooms and living space | Foundations, roofline, structure, services |
| Garage conversion | Office, gym, bedroom or playroom | Insulation, flooring, electrics, heating |
| Bathroom extension | Ensuite, WC or family bathroom | Plumbing, drainage, ventilation, tiling |
Do You Need Planning Permission for a House Extension in Birmingham?
Some house extensions may fall under permitted development, while larger extensions, double-storey extensions or projects affecting neighbours, boundaries, conservation areas or protected features may need planning permission or prior approval. Before work begins, it is important to understand what applies to your property.
TessCon can work alongside your architect, designer, structural engineer or planning consultant to help deliver the construction phase of your extension once the correct permissions and specifications are in place.
Building Regulations for House Extensions
Most house extensions need to comply with Building Regulations, even when planning permission is not required. These rules cover important areas such as structure, foundations, insulation, fire safety, ventilation, electrics, drainage and energy performance.
TessCon focuses on safe, durable and well-managed building work that supports long-term performance.
FAQs About House Extensions in Birmingham
How much does a house extension cost in Birmingham?
The cost of a house extension in Birmingham depends on several factors, including the type of extension, the size of the build, the condition of the existing property, access to the site, structural requirements and the level of finish you want to achieve.
For example, a simple garage conversion will usually involve different costs from a large wraparound extension or double-storey extension. Key cost factors can include foundations, roofing, steelwork, glazing, insulation, electrics, plumbing, drainage, flooring, plastering and decoration.
At TessCon, we provide clear, detailed quotations after reviewing your property and understanding what you want to achieve. This helps give you a more realistic cost for your specific project rather than a rough estimate that may not reflect your home, layout or requirements.
Do I need planning permission for a house extension?
Some house extensions may fall under permitted development rights, meaning formal planning permission may not always be required. However, this depends on the size, height, location and design of the extension, as well as the type of property and whether there are any restrictions in place.
Larger extensions, double-storey extensions, properties in conservation areas, homes with previous extensions, or projects close to boundaries may need planning permission or prior approval. Building Regulations are also separate from planning permission and will usually still apply to most extension projects.
TessCon can help you understand the practical building considerations involved and can work alongside your architect, designer, structural engineer or planning consultant where required.
Can TessCon build kitchen extensions in Birmingham?
Yes. TessCon builds kitchen extensions, kitchen-diners and open-plan living spaces for homeowners across Birmingham and the surrounding areas.
A kitchen extension is one of the most popular ways to improve a home because it can create more space, better natural light and a stronger connection between your kitchen, dining area and garden. Depending on your property, this could involve a rear extension, side-return extension, wraparound extension or a larger ground-floor redesign.
We can help with the construction work required to create a practical, well-finished space, including structural alterations, roofing, glazing, insulation, electrics, plumbing, plastering and finishing work.
Do you offer garage conversions in Birmingham?
Yes. TessCon can convert underused garages into practical living spaces for homeowners in Birmingham.
Garage conversions are a popular option when you need extra room but do not necessarily want to build a full extension. Depending on the structure and layout of your property, a garage can often be converted into a home office, guest bedroom, playroom, gym, utility room, hobby room or additional living area.
Typical work may include insulation, flooring, walls, ceilings, electrics, heating, lighting, windows, doors and internal finishing. We will assess the existing garage and discuss what is needed to make the space comfortable, usable and suitable for your plans.
What is the difference between a house extension and a home renovation?
A house extension adds new space to your property, while a home renovation improves, updates or reconfigures existing space.
For example, a rear extension may create a larger kitchen-diner, while a renovation may involve updating the existing kitchen, changing the layout, improving finishes, replacing flooring, upgrading bathrooms or carrying out structural alterations inside the home.
Many projects involve both. A homeowner may extend the rear of the property while also renovating the existing ground floor to create a more open, practical layout. TessCon can help with extension work, renovation work and wider home improvement projects where both new and existing spaces need to work together.
Do you provide house extension quotes?
Yes. TessCon provides house extension quotes for homeowners in Birmingham and selected surrounding areas.
To prepare an accurate quote, we will need to understand the type of extension you are planning, the property layout, access, size of the work, desired finish and whether you already have drawings, specifications or structural information. If you are still at an early stage, you can still contact us to discuss your plans and next steps.
Our aim is to provide clear, practical pricing so you understand what is included before committing to the work.
Can you help with single-storey extensions?
Yes. TessCon builds single-storey extensions, including rear extensions, side extensions, side-return extensions and kitchen extensions.
Single-storey extensions are ideal for creating larger kitchens, open-plan living spaces, dining areas, utility rooms, downstairs bathrooms, playrooms or home offices. They are often a practical choice for homeowners who want more usable ground-floor space without moving house.
We can help manage the build process and deliver the construction work needed to create a strong, functional and well-finished extension.
Do you cover areas outside Birmingham?
What Our Clients Have to Say
Hear From Our Satisfied Customers
At Tess Contractors, we take pride in delivering exceptional roofing solutions, whether it’s a large-scale commercial project or a residential roofing job, and exceeding our clients’ expectations.
But don’t just take our word for it – read on to see what our satisfied customers have to say about their experience working with us.
