Concrete Base Laying Services
  • Concrete Bases
  • Timber Frame Bases
  • Patio Bases
  • Existing Bases

For most buildings you will need to organise a base.  In some certain circumstances you can use an existing base but it needs to be flat and level.  Unfortunately, you do not always know the history of the base, how it was constructed and what is beneath it.

To ensure peace of mind we do suggest a new purpose built base, if you are in any doubt please do not hesitate to contact us.

We have the following suggestions for your base construction

Concrete Base

This is the most common base and probably the most cost effective.  We recommend 150mm of compacted hard core, 100mm of concrete and depending on the size there may be a requirement for either steel reinforcement or expansion joints to stop cracking. Garden Retreat can supply this as a service, please contact us for a quotation.  If however you want to use a local builder, that is fine.  At the point of order we will supply you with a base layout and base specifiation which your builder can use to construct your base.

Timber Frame Base

The timber frame base is an alternative to the concrete base.  We recommend this alternative if there is limited access to the rear of the garden, the base needs to span different levels or you just may not want to have a large slab of concrete in your garden. Please click here for more information on ‘Timber Frames Bases’

Patio Bases

If you are going to create a patio base just for the building it is quite often better to opt for the Concrete option. Firstly you will not see it and secondly you will still have to ensure the sub structure under the patio is designed such that it will take the weight of the building without sinking or moving.

If you are going to have a large patio we recommend the actual base is the same size as the building so any rain that hits the side of the building drains into the surrounding ground. It may be more cost effective to prepare a concrete base for the building and either slab or deck around and up to the base.

Existing Base

You may have an existing base that can be used although there are a number of considerations to be taken into account.

  • Is the existing base flat and level?
  • Is there any evidence of subsidence, cracking or damage?
  • Is the base at a height that would effect ending up with a building that needs to be a maximum height of 2.5m to satisfy planning rules?
  • Is the base large enough to accept the new building?
  • Has the base already had a building on it, if so if it shows signs of damage it may have to be replaced?

If you need any advice on the type of base you require please do not hesitate to contact our experienced staff for further information

  • “Awaiting Testimonial.”  Verified Review By Houzz

    Charlton Kings Cricket Club Pavilion, Charlton Kings, Cheltenham, Gloucestershire.

    Charlton Kings Cricket Club Pavilion, Charlton Kings, Cheltenham, Gloucestershire.
  • “Awaiting Testimonial” Verified Review By Houzz

    Mr S – Western-super-Mare, Somerset, 12.2m Wide x 7.0m Deep Timber Framed Garage with Golden Oak Sectional Doors
  • “Really happy with this building, it was delivered and installed in 8 weeks and Garden Retreat did a great job, no fuss, they just got on with it, very happy 🙂” Verified Review By Houzz

    Mr & Mrs S – Blandford Forum, Dorset – Lyndhurst 4.2m x 2.6m Composite Clad Garden Office with Anthracite Grey Double Glazed Doors & Windows
    Bournemouth, Dorset
  • We have found the Garden Retreat team easy to work with – they are clear as to what will be provided in their building and their team members are friendly and hard working.

    We changed the design during the process, and they discussed the details and continued to adjust their quote, to ensure that the correct specification was being provided for the building’s needs.

    The final product – a meeting room in a community garden – was delivered, and we are pleased with the result. The quality of finish is high, and all of the work was completed to a very good standard.” Verified Review By Houzz


    Calthorpe Community Gardens – Grays Inn Road, London 10.0m x 4.2m Commercial Garden Office
  • “We chose Garden Retreat to install a stand-alone custom garage build in the summer of 2020. Having researched various local options we decided to use James and his team because of the customisable choices with the size of the building, and the different finishes available. We chose the cedar door and roof options with a feathered-edge cladding and the end result is great. From the start of the project right through to the end there was no delay in communications and answers to the many questions we had were answered promptly. The building itself went up very quickly and we are pleased with the quality and sturdiness of the garage. Thanks again and we have already recommended the team to friends and family.” Verified Review By Houzz

    Mr & Mrs D – West Moors, Dorset, 3.2m Wide x 7.0m Deep Single Timber Garage
  • ‘”With limited space available, Jim and his team from Garden Retreat helped me through the design phase which enabled me to end up with the garden room/office that I was looking for. The quality of build is excellent and I would not hesitate in recommending Garden Retreat for your project.

    PS I have bought shelving, a large desk and a work bench with tool racking so a real man cave. Yet to all be installed but by the time you come next it will be and happy if you wanted to take some more shots. 

    So as an office, work area overlooking garden it’s spot on!'”Verified Review By Houzz

    Mr & Mrs O – Easton, Bristol – 5.6m X 2.4m Cedar Clad Garden Office With Anthracite Grey Double Glazed Sliding Doors & Windows
  • ‘With limited space available, Jim and his team from Garden Retreat helped me through the design phase which enabled me to end up with the garden room/office that I was looking for. The quality of build is excellent and I would not hesitate in recommending Garden Retreat for your project.

    PS I have bought shelving, a large desk and a work bench with tool racking so a real man cave. Yet to all be installed but by the time you come next it will be and happy if you wanted to take some more shots. 

    So as an office, work area overlooking garden it’s spot on!’ Verified Review By Houzz


    Mr M – Poole, Dorset – 3.6m x 2.4m Cedar Clad Garden Office with Anthracite Grey Double Glazed Doors & Windows
  • ‘I was impressed by the team who built it in two days during some very nasty weather. It is an excellent office and has been much admired, thank you Garden Retreat’ Verified Review By Houzz

    Mr & Mrs P – Wincanton, Somerset, 3.8m x 4.3m x 2.5m High, Cedar Clad Curved Roof Garden Office with Anthracite uPVC Windows and Doors
  • “We have been really impressed with Garden Retreat.  They have supported us throughout the project and even though there were delays which were outside our control they went over and beyond to get the cabin built.

    The installation staff were polite and they kept the area tidy as they worked, a great experience!” Verified Review By Houzz

    Mr & Mrs E – Dorchester, Dorset – 5.2m x 3.4m – 44mm log Open Plan Barbados Log Cabin – 2.5m Maximum Height
  • “Grannies Grotto! This has been a fantastic solution to a space problem and my Grand Children love to stay in it when they come to visit.  It is safe and warm all year round and allows me to have all my family to stay whenever they like”.

    “Garden Retreat have kept me informed at every stage and the installation team were very efficient and polite, thank you very much!” Verified Review By Houzz

    Mrs K – Sturminster Marshall, Dorset – 12ft x 8ft Traditional – 2.5m High Garden Office or Garden Room
  • “Thank you so much for everything, especially your expertise & thoughtfulness, a pleasure doing business with you and we have no problem recommending your work 100%” Verified Review By Houzz

    Mr & Mrs W– Portland Bill, Dorset – 14ft x 11ft Customised Beach Hut
  • “We were very pleased with Garden Retreat, right through from the initial design to installation.  It was not easy for the installation team to complete the job from an access point of view but nothing was a problem, they just got on with the job.  I would recommend this company; they were excellent, polite and efficient in all aspects, thank you!” Verified Review By Houzz

    Ms S– London SW6 – 2.6m x 4.8m Contemporary Garden Office – 2.5m Maximum Height
  • “Being a thorough sort of person I researched a number of options for my 20ft x 12ft timber garage and went into great detail, creating spreadsheets and detailing the pros and cons.

    I knew I wanted a quality product and I wanted to have tanalised timber which narrowed the field too.  I was also concerned about the point at which any wood might be sitting in water on the base.

    Garden Retreat ticked all the boxes, the garage sits on 1 course of bricks and the cladding stops short of the base, so even if water does stand on the base it won’t make contact with the wood.  Additionally, Garden Retreat ply line their garage for extra strength and security.  In the end, the choice was easy, only Garden Retreat met all my criteria and they were a pleasure to deal with from pre-order to delivery. The erection was on time, quick and fuss-free and the finished product looks fantastic. Highly recommended supplier!” Verified Review By Houzz

    Mr M – Chesterton, Oxfordshire – 12ft x 20ft Single Timber Feather Edge Garage
  • “Hi Jim,

    Everything is great with the summerhouse! I think it’s virtually bomb proof!!…….. Very happy.

    Of course I can do a positive testimonial from me no problem at all.

    And if it helps you can show our building to someone else if they want to see it. Just give me a call…….

    All the best!”


    Verified Review By Houzz

    Mr & Mrs S, Christchurch, Dorset, 3.0m x 4.0m Contemporary Garden Room
  • “A great experience. Jim was informative throughout the process, answering all our awkward questions with real knowledge and insight. The final building exceeds our expectations. Brilliant!”. Verified Review By Houzz

    Ms R – Crystal Palace, London, 4.0m x 2.8m Contemporary Garden Office with Grey Anthracite uPVC Doors and Windows
  • “We have been very happy throughout the process from design to installation with Garden Retreat.  We were not the easiest of Customers, we wanted a very specific look and detail is important to us.

    James spent a lot of time working with us to ensure all the elements were designed into the building and had a large number of examples of previous projects which demonstrated their ability to provide us with the garden office and store we wanted.

    Finally they worked very well with our garden designers, the installers were polite and cleared up after the timber building had been installed.

    We would be happy to recommend Garden Retreat to any of our friends and would like to thank them for all their efforts.” Verified Review By Houzz

    Mr & Mrs S – Bourne End, Bucks, 5.5m x 3.0m Garden Office and Store
  • “The team who assembled the unit were friendly- efficient and professional. Any questions were answered and nothing was too much trouble. Great value and these guys would come very highly recommended!” Verified Review By Houzz

    Hampton Farm Shop, Evesham, Hampton, Worcester – 26m x 6.1m – Farm Shop
  • “We were very pleased with the studio that James designed for us. He accommodated all our requirements and created a very well designed building. The construction was completed on time and to plan. I would be very happy to recommend Garden Retreat.” Verified Review By Houzz

    Ms E – Downton, Salisbury, 8m x 5m Cedral Clad Garden Leisure Room With W.C. and Kitchen / Utility Room.
  • “We are so happy with the quality of the building, the doors and windows are of the highest quality, Garden Retreat have provided an excellent product, we could not be any more happy and cant wait to move in”. Verified Review By Houzz

    Cropredy Marina, Cropredy, Banbury, Oxfordshire,13m x 8m Pavilion Marina Sales Office
  • “James was very helpful and proactive during the design phase and suggested lots of options when we were designing the office. After the installation he was keen to check everything was in order. He was rapid and timely sorting out the minor niggles that occur on any project and made sure that we were completely happy with our office after installation. He was a pleasure to work with and I would recommend his expertise and proactive approach.”. Verified Review By Houzz

    Mr & Mrs S – Downton, Salisbury, Wiltshire, 4.4m x 4.0m x 2.5m High Contemporary Garden Office with Grey Anthracite uPVC Doors and Windows
  • “We sought a non standard design and build to our outline spec for a 10m x 6m garage to be used for classic car storage. We awarded the contract to Garden Retreat in part because of the advice on materials and construction offered by their James Parker. From design through planning approval to construction took 3 months. Erection of the sectional garage took 3 hours (excluding tiling). Brilliant to watch. Price quoted was the price paid. No hidden extras. Well worth taking the elevation drawings to aid planning. Very satisfied with the finished product. Thank you.” Verified Review By Houzz

    Mr S – Devon, 10.0m x 6.1m Triple Timber Garage with a 4.2m Aluminium Insulated Roller Garage Door in Golden Oak and a Metro Tile Roof
  • “James at Garden Retreat was a true professional and understood straight from the start what we wanted to achieve in building a garden room containing a home gym. His knowledge and experience helped enormously. The room was built on a hill with difficult access but that was not a problem for Garden Retreat. We are so pleased with the end result and it is in keeping with the rest of the house. I would highly recommend James at Garden Retreat” Verified Review By Houzz

    Mr & Mrs W – Studland, Dorset, 6.0m x 4.0m Contemporary Garden Gym with 3.0m Anthracite Grey uPVC Patio Doors
  • “I contacted Garden Retreat because they were Dorset-based, the right sort of price range and I was looking for  a company who provided individually designed buildings rather than an inflexible standard package.  From the beginning the service was personal, engaged and professional. It was a long journey from design through planning permission and a large amount of ground work to be done before the base could be laid and throughout James Parker remained helpful and available, if needed, with experienced advice. An unexpected but necessary alteration the week before the building was due to arrive was imaginatively  and speedily resolved. The build itself took just two days and I was delighted by the finish inside and the quality of the work. I’m really, really pleased, and the studio is a lovely place to work.” Verified Review By Houzz

    Mrs D – Whitchurch Canonicorum, Nr Bridport, Dorset, 7.5m x 4.5m Cedar Clad Garden Studio with Cedar Shingles
  • “We were really worried with this project as it was important with a limited budget and the need to provide an annex for my disabled mother we really needed to ensure we chose the right company.

    We are so happy with the service we received from Garden Retreat, they did a fantastic job and my mother has a fantastic annex, thank you so much!” Verified Review By Houzz

    Mr & Mrs C – Totnes, Devon, 9.0m x 4.2m Kensington Garden Room with Rationel White uPVC Windows and Doors and Marley Weather Board in Green
  • “James and the team at Garden Retreat have been great – I was not certain what I wanted and when I thought I did I then changed my mind (on several occasions). They fulfilled all promises, were flexible and provided a very good quality product at a price which could not be matched.

    I now have an attractive garden building which for me will provide office and storage space.

    I am happy , very happy and so are my neighbours!” Verified Review By Houzz

    Mr P – Earlsfield, London, 3.8m x 2.4m x 2.5m High, Cedar Clad Contemporary Garden Office with Black uPVC Windows and Doors
  • “I contacted Garden Retreat as I wanted to have my own beauty salon at home. Being clear about what I wanted Garden Retreat were able to satisfy all my needs including budget and design They also came up with some further ideas enabling me to maximise the space and end up with a fabulous contemporary salon which is a great place to work, not only for myself but also a relaxing environment for my clients. I would highly recommend Garden Retreat’s service.” Verified Review By Houzz

    Mrs L – Lymington, Hampshire, 6.2m x 3.6m x 2.5m High, Contemporary Garden Beauty Saloon with Anthracite uPVC Windows and Doors
  • “We are extremely pleased with our new garage and would thoroughly recommend Garden Retreat, great quality and a great service!” Verified Review By Houzz

    Mr B – Staines-Upon-Thames, Middlesex, 19ft wide x 18ft Deep Double Timber Garage with Cedar Shingles and Cedar Up and Over Doors
  • “So pleased with the garage, great product, there were a few issues but Garden Retreat soon resolved them” Verified Review By Houzz

    Mr S – West Monkton, Somerset, 20ft x 40ft Quadruple Timber Garage with Three Bay Garage and Built-in Garden Office
  • “Garden Retreat installed a home office for us (including laying of the concrete base). The project was undertaken at the agreed time and there were no hidden or additional costs.

    We are very happy with the end result; an excellent office space that is comfortable to work in and looks good.

    Garden Retreat were highly professional and helpful. A pleasure to deal with.”  Verified Review By Houzz

    Mr & Mrs P – South Wonston, Hampshire, 3.6m x 3.7m x 2.5m High, Cedar Clad Curved Roof Garden Office with Anthracite uPVC Windows and Doors
  • “Absolutely fantastic, a very strong structure and extremely well built. James at Garden Retreat provided excellent service, I would have no hesitation in recommending the Company and their products” Verified Review By Houzz

    Mr M – Wooton, Bedfordshire – 20ft x 20ft Timber Frame Garage with Barn Doors
  • “We not only required a contemporary garden building to replace our old summerhouse but also wanted it to look attractive, be protected from the elements and use it as a functional utility room.  Garden Retreat provided all of the above and more.  Very happy with their work, the quality and it was within our budget. ” Verified Review By Houzz

    Mr & Mrs W – Charmouth, Dorset – Cedar Clad Utility Room
  • “This project worked out superbly and Garden Retreat were great providing us with a high quality structure which will stand the test of time for the Crowle community”. Verified Review By Houzz

    The Community Farm Shop At Crowle, Crowle, Worcestershire.
  • “So pleased with my garden office, value for money and a great place to work” Verified Review By Houzz

    Mr P – Christchurch, Dorset – 3.8m x 2.4m x 2.5m High, Cedar Garden Room with Black uPVC Windows and Doors and Black Composite Decking
  • “Very pleased with our new garden office” Verified Review By Houzz

    Mr & Mrs F – North Baddesley, Hampshire 3.8m x 4.3m x 2.5m High, Cedar Clad Curved Roof Garden Office with Anthracite uPVC Windows and Doors
    North Baddersley, Hampshire
  • “James and Garden Retreat provided a fantastic service from start to finish. They recently built and installed a beautiful bespoke garden office / living space in our back garden. We are delighted with it! The customer service was also truly bespoke. James came to visit us several times throughout the process and was very responsive via telephone and e-mail at any time. He provided really practical, common sense advice and we never felt we were being sold anything at all. The building is beautiful – the bespoke design means it fits perfectly in our space and feels like it has been there for years! The cedar cladding and grey uPVC windows / doors really add a touch of class. Internally the vinyl flooring provided a very nice finish. Importantly also, James and the team that installed the building were respectful, friendly and genuinely nice people. We can highly recommend James and Garden Retreat for customer service and high quality craftsmanship” Verified Review By Houzz


    Mrs & Mrs C – Bournemouth, Dorset 6.2m x 3.6m x 2.5m High, Cedar Clad Garden Office with Anthracite Grey uPVC Windows and Doors
    Bournemouth, Dorset