Garden Rooms Charlton

Name: Garden Office Buildings
Address: Rear of 158 Main Road, Biggin Hill, Kent, TN16 3BA, GB
Telephone: 01689 818 400
Price range: ££

Bespoke garden rooms, offices, gyms and studios designed and built for Charlton homes. Family company, 1,000+ builds since 2004.

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Garden Rooms Charlton

Garden rooms built to last for Charlton’s mix of period homes and modern family houses. Based nearby in Biggin Hill, we know SE7 well.

Charlton is a brilliant part of South East London that often flies under the radar. The village centre has genuine character, with Jacobean Charlton House, leafy side streets, and a mix of Victorian terraces, Edwardian semis, and newer family homes. If you’ve got a garden room project in mind, chances are your Charlton property has the space for it.

We’re a family run company based in Biggin Hill, just a short hop from SE7. Since 2004 we’ve completed over 1,000 garden room builds across South East London and Kent, so we understand the local housing stock inside out. Whether your home is a Victorian terrace near the village green or a 1930s semi on the slopes towards Charlton Park, we’ll design a building that works with your garden’s size and layout.

You’re welcome to visit our showroom to see the quality of our builds first hand. We use proper timber frame construction, full insulation, and high spec double glazing as standard. Nothing is prefabricated off site and shipped in a box.

Have a look at our buildings and prices page for a straightforward breakdown of costs. We offer a free site survey where we’ll measure up, discuss your plans, and give you a fixed quote with no hidden extras.

Save £5,000 with our Ambassador Programme. Allow us to photograph your completed garden room and host up to 3 visits from prospective customers (by appointment only). Learn more.

Solid Construction for Charlton’s Growing Community

Garden Office Buildings does things differently. Have a look at the fascia, soffits, trims, and rear cladding on any of our builds. These are proper structures, put together on site by experienced carpenters. We don’t do flat-pack.

With over 1,000 builds completed, we’ve had plenty of time to get every detail right.

What You Get With Us

Skilled Carpenters – Teams of 2 to 3 working on site for 3 to 6 weeks
No Corners Cut – Your garden room is built properly, full stop
100mm PIR Insulation – Keeps your building warm in winter and cool in summer
Double-Glazed Windows – Secure, attractive, and energy efficient
Made for Your Space – Every building is designed to fit your garden and lifestyle
Free Consultations – We’ll visit your home and give honest advice, no hard sell
Our Own Installers – We never subcontract the build to anyone else

We cover Charlton and all the surrounding areas including Greenwich, Woolwich, Blackheath, Eltham.

Garden Gym, Charlton

A PE teacher living in a 1930s semi detached house near Charlton Park wanted a home gym he could use before and after school without battling traffic to a commercial gym. His rear garden was a decent size at around 15 metres deep, so we had plenty of room for a 4.5m x 3m build with space left over for the kids to play.

We used heavy duty flooring rated for dropped weights and installed double doors to let in plenty of light from the east facing garden. A wall mounted air conditioning unit keeps things comfortable during summer HIIT sessions. The exterior was finished in composite cladding to keep maintenance low, which was important given his busy schedule during term time.

He’s been using the gym daily since we handed it over, and mentioned that several colleagues at his school in Woolwich have asked for our details. The building sits neatly against the rear fence, and his wife appreciated that we left the garden looking tidy once the install was finished.

Garden Studio, Charlton

A freelance graphic designer and her partner, a podcast producer, needed a shared creative studio in the garden of their Edwardian terrace on Charlton Church Lane. The brief was a dual purpose space: one end for design work with calibrated monitors, the other for audio recording. We built a Multi configuration at 7m x 3.5m, with an internal partition creating two distinct zones.

The recording side was fitted with enhanced acoustic insulation and a sealed door to keep external noise out, which is especially useful given the proximity to Charlton station and the flight path overhead. The design side has a large picture window overlooking the garden, with blinds for screen work when the sun gets too bright.

Both clients now work from the studio full time and say the separation from the house has made a huge difference to their productivity. They no longer rent desk space in Deptford, saving them a combined total that covered the monthly finance payments from day one.

Get in Touch

Thinking about a garden room? We’re happy to help.

We build garden offices, studios, gyms, annexes, and multi-use buildings across Charlton and the surrounding areas. Our service covers South East London, Kent, Surrey, and Sussex.

Call us: 01689 818 400
Email: info@gardenofficebuildings.co.uk
Showroom visits available Monday to Saturday by appointment

Why Customers Choose Us

We’ve been building garden rooms across South East London for over 20 years, including in Greenwich, Woolwich, Blackheath, Eltham

All our buildings use 100mm PIR insulated panels, which outperform standard rockwool by a wide margin

Over 55 years of combined experience in the team

We care about getting the details right

Visit our showroom to see the quality for yourself and chat about your plans

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About Charlton

Charlton sits between Greenwich and Woolwich, with Charlton Park providing a generous sweep of green space and Charlton House standing as one of the finest surviving Jacobean buildings in England. The village core has a genuine community feel, with a handful of independent shops and pubs, and the recent development around the old Charlton Athletic ground has brought new energy to the area.

Transport is good: Charlton station has regular services to London Bridge and Cannon Street, and buses run frequently to Greenwich, Woolwich, and Eltham. The area’s housing is varied, from neat Victorian and Edwardian terraces near the village to interwar semis on the higher ground and modern apartments closer to the river. Most houses have rear gardens of a usable size, making them well suited for garden room projects. Charlton Park itself, with its playing fields and community events, is a real asset for families.

Visit Our Showroom

From Charlton, our Biggin Hill showroom is about 30 minutes by car via the A20 and A233. It’s an easy run, especially outside rush hour, and gives you a chance to walk through our Midi, Maxi, and Multi buildings in person.

“I wasn’t sure what to expect from the showroom but it really helped us decide. Seeing the thickness of the walls, the quality of the windows, and how the electrics are all concealed made us confident we were spending our money wisely. The whole process from first visit to handover was about five weeks.” – Homeowner, Charlton SE7

garden office buildings banner at showroom

Frequently Asked Questions

How much does a garden room cost in Charlton?

Garden rooms in Charlton typically cost between £15,000 and £50,000 depending on size, specification and finish. Our Midi (4m x 3m) starts from around £15,000, the Maxi (5m x 3m) from around £20,000, and our Multi (6m x 4m) from around £30,000. Every quote includes groundwork, electrics and VAT with no hidden extras. See our buildings and prices page for full details.

Do I need planning permission for a garden room in Charlton?

Most garden rooms in Charlton fall under permitted development and do not need planning permission. The building must be single storey, no taller than 2.5 metres at the eaves, and must not cover more than 50 percent of the garden. If your property is in a conservation area or is listed, additional restrictions may apply. We handle planning guidance on every project.

How long does it take to build a garden room?

Our builds typically take 3 to 6 weeks on site depending on size and complexity. A standard Midi or Maxi takes around 3 weeks, while a larger Multi or bespoke build may take up to 6 weeks. We use our own teams of experienced carpenters and never subcontract.

Can I use a garden room as a home office?

Absolutely. A garden office is one of our most popular builds. Every garden room comes with 100mm PIR insulation, double glazed windows, full electrics and internet connectivity, making it comfortable and productive all year round.

Do Garden Office Buildings install garden rooms in Charlton?

Yes, we regularly build garden rooms in Charlton and the surrounding areas including Greenwich, Woolwich, Blackheath, Eltham. We are based in Biggin Hill, Kent, and have completed over 1,000 builds since 2004. Call us on 01689 818 400 or visit our showroom.

Helpful Resources

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Whether you need a garden office, a creative studio, a home gym, or a family space, we’ll build something that works for you. Click below for your free quote.

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