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About The Green Room

We Build More Than Garden Rooms

At The Green Room, we design and install high-quality Granny Annexes, Garden Lodges and Garden Rooms across Northamptonshire and beyond. We tailor every building to suit your needs, design each space with care, and deliver every project with no hidden costs.

As a family-run company with years of experience, we’ve built a strong reputation for reliability, honesty and the personal service. In addition, we manage every stage of the project from start to finish to make the process simple and stress-free. Whether you need a self-contained home for a loved one or a peaceful space at the bottom of the garden, we’re here to help.

Why Choose The Green Room?

A Full Service From Start to Finish

We offer an all-inclusive turnkey solution, which means we take care of everything from planning and groundwork to installation, utilities, and interior finishes.

In addition, you’ll never face unexpected charges because the price we quote is the price you pay.

A Friendly and Qualified Team

Our team consists of fully qualified tradespeople with years of hands-on experience. Over the years, they’ve installed hundreds of granny annexes, garden lodges, and garden rooms across the UK.

In addition, they’re friendly, professional, and always ready to help if anything unexpected comes up during your build.

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We Do Things Properly

Every building we install uses high-spec insulated SIPs panels, engineered foundations and fully integrated service connections.

We design and construct each building to high standards and work closely with local planning authorities and Building Control where required. As a result, every project follows the appropriate planning, construction and certification process.

Designed For Real Life

We cover Northamptonshire and beyond, so whether you’re adding a granny annexe or planning a bespoke garden lodge, we can help. We design our buildings for comfortable everyday living, which means they stay warm in winter, cool in summer, and built to last for years with very little maintenanc

In addition, every design is fully customisable, with a wide choice of internal layouts, kitchens, bathrooms, and finishes. If you need help deciding what works best for your space and lifestyle, our team is always happy to guide you through each step of the process.

garden annexe kitchen you can live in

No Hidden Extras. Ever.

We’re different from many other garden building companies because we don’t just deliver a kit and leave you to manage the rest. Instead, we take care of every detail from start to finish.

This includes:

  • Full foundations and groundworks
  • Plumbing and electrics connected to the main house
  • All internal and external finishes
  • Kitchens, bathrooms, heating, and lighting

As a result, you benefit from one clear price and one dedicated team throughout the entire project.

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Built With Experience, Backed By Trust

The Green Room was founded by Brian, a skilled carpenter with more than 40 years of experience. In addition, his background in carpentry and ISO-accredited design ensures every detail receives careful attention, from the structural build through to the final finish.

As proud members of IWA, we also provide a 10-year insurance-backed guarantee, including deposit protection (subject to policy fees). As a result, you can move forward with complete confidence and enjoy a space designed to last for years to come.

The Green Room work van beside an annexe under construction

Our Awards and Accreditations

Our Certification

Built to High Construction Standards

We design and construct every Green Room building to high standards. Where Building Regulations apply, we manage the required Building Control inspections and approval. We also provide structural calculations where required and Part P electrical certification for completed electrical work.

Every building comes with our 10-year comprehensive guarantee as standard. As members of the IWA, we can also offer an optional 10-year insurance-backed guarantee and deposit protection, subject to the relevant policy terms and fees.

From self-contained granny annexes and garden lodges to high-spec garden rooms, we carefully select materials for their strength, safety and long-term durability—giving you confidence that your new space is built to last.

As Seen on TV

The Green Room was Featured on ITV’s Love Your Home and Garden with Alan Titchmarsh

We were proud to be part of Love Your Home and Garden with Alan Titchmarsh, where we designed and built a bespoke garden room for the Seesurrun family. Their son Aryan requires full-time care, and our garden room gave his mum, Manisha, a peaceful space to return to her design work.

The finished room opened onto a wide terrace with level access, a lift for Aryan, and beautiful landscaping that tied everything together. It was a thoughtful project for a remarkable family.

Read the full story of our Eltham garden room on Alan Titchmarsh’s Love Your Home & Garden, including behind-the-scenes photographs from the project.

“The building is so well constructed and the team were a joy to have on site. I cannot recommend them highly enough!”
— Thea Pitcher, ITV

To see similar builds, visit our garden room examples page or get a quote for your own garden room.

the green room on tv 2

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Based on 81 Reviews

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The Green Room

5.0

Based on 81 Reviews

See All Reviews

Garden Annexe FAQs

Common questions about planning, pricing and what’s included

If you’re thinking about adding a granny annexe or garden lodge to your property, it’s natural to have a few questions. Here we’ve answered some of the things we’re most often asked. From how long it takes to what’s included in the price, this section covers the key points to help you get started with confidence.

Are garden lodges insulated for all-year use?

Yes. Our garden lodges are built using Structural Insulated Panels (SIPs), which provide high levels of insulation and energy efficiency.

The highly insulated construction helps retain heat during colder weather and reduces heat transfer during warmer weather, creating a comfortable living space for year-round use.

Are service connections included in the cost?

Yes. The agreed water, electricity and foul drainage connections, along with standard trenching, are included in your fixed-price quotation.

If your project requires longer service runs, additional trenching, a pump station or extra work because of the site conditions, we’ll identify this during your site survey and include the agreed costs in your quotation.

Can I get a fixed price before I commit?

Yes. Following your free, no-obligation site survey, we’ll agree the layout and specification of your garden annexe and provide a detailed, fixed-price quotation for the project.

The quotation will clearly set out what is included, so you know the full agreed cost before you commit.

Can I live in a granny annexe full time?

Yes. Our granny annexes are designed for comfortable, year-round living, with high levels of insulation, heating, utility connections and a fully fitted kitchen, bathroom, living area and bedroom.

A granny annexe can provide long-term accommodation for a family member while remaining ancillary to the main house. The appropriate planning route will depend on the individual project, and we’ll advise you on this as part of our service.

Do I have to pay council tax on a granny annexe?

Council Tax will depend on how the granny annexe is used and who lives in it.

A granny annexe may qualify for a full Council Tax exemption if it is the sole or main home of a dependant relative who meets the qualifying criteria. In some other circumstances, a Council Tax discount may be available.

As the position depends on the individual circumstances, we recommend checking with your local council to confirm whether an exemption or discount applies.

Read our granny annexe Council Tax guide for a full explanation of the current rules.

Do I need planning permission for a granny annexe?

Not every granny annexe requires full planning permission. Depending on the design, siting and intended use, your project may require a full planning application or it may be appropriate to obtain a Lawful Development Certificate (LDC).

Where a granny annexe meets the relevant Caravan Act requirements and is used in connection with the main house, full planning permission may not be required. However, we recommend obtaining an LDC to formally confirm that the proposed use is lawful.

We’ll assess the appropriate planning route for your project and manage the application and local authority correspondence on your behalf.

For more information, see our granny annexe planning guide.

Do you manage all trades during the build?

Yes. We provide a fully managed service and coordinate the different trades required throughout your garden annexe build, including groundworkers, builders, electricians, plumbers and plasterers.

This means you don’t need to organise or manage separate trades yourself. We coordinate the work and keep your project moving from one stage to the next.

Do you offer finance?

We don’t currently offer finance directly. However, we can provide a detailed, fixed-price quotation for your granny annexe, which you can use when discussing funding options with your mortgage provider, bank or financial adviser.

Any borrowing will be subject to the individual lender’s eligibility criteria and approval.

Do you take care of all the groundwork?

Yes. We take care of the groundworks and foundations required for your garden annexe, including trenching and either screw pile or reinforced concrete foundations, depending on the site requirements.

We also manage the agreed water, drainage and electrical connections as part of the project, so you don’t need to arrange separate trades for this work.

How do I get started with a garden annexe?

Simply complete our quote request form or give us a call. We’ll discuss what you’re looking for and can send you example one or two-bedroom annexe plans, specifications and guide prices to help you explore the options.

If you’d like to take the project further, we can then arrange a free, no-obligation site survey to assess your garden, access, ground conditions and utility connections.

Is the annexe or garden lodge usable straight away after installation?

Yes. Once we’ve completed the installation and final checks, your annexe or garden lodge is fully fitted and ready to use.

The internal walls and ceilings are professionally plastered, but the new plaster will need time to dry fully before painting or decorating. We’ll explain what you need to do at handover.

Ready to Get Started?

Whether you’re planning a granny annexe, a garden lodge, or a garden room in Northamptonshire, we’ll make the process smooth from the first conversation to the final handover.

See our Granny Annexes Explore our Garden Lodges

Get in Touch with The Green Room

Our team of down-to-earth experts genuinely care about great garden spaces and excellent customer service. Whether you’re just starting to explore your options or ready to move forward with your project, we’re here to help.

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