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*Update October 2022*

We are open Monday-Saturday 9am-5.30pm and Sundays 10am-4.30pm

Please feel free to come and visit our showsite, alternatively if you would like to make an appointment please call or email us.

To discuss your requirements or for further information please call 01403 255456

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Interested in a Conservatory or Solid Roof Extension?

Quotes – register your interest in a survey and quote

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Quotes – we can provide detailed prices and quotes for installation and bases – get in touch to discuss.

Brochures 📖 can be emailed to you – Request one here

Cousins Conservatories & Garden Buildings

Hilliers Garden Centre, Brighton Rd, Horsham, RH13 6QA

01403 255 456

Call our friendly team 7 days a week for help and advice

Open 7 Days a Week

Mon - Fri 09:00 - 17:30
Saturday - 09:00 - 17:00
Sunday - 10:00 - 16:30

Cousins Conservatories & Garden Buildings

The South East's Leading Showcentre

Watch our showcentre video

Welcome to Cousins Conservatories & Garden Buildings in Horsham

We are an independent family run company and have been operating within Sussex, Surrey & Kent since 1989. We have installed 1000’s of conservatories and garden buildings during this time and operate one of the largest showcentres in the South East.

Our Horsham Showcentre

A visit to our showcentre in Horsham is the best way to experience our product ranges

Case Studies / Examples of our work

Recent Testimonials

A new conservatory has been a long awaited project for us, and after much consideration we decided on Cousins as our installer. We have not been disappointed as this firm have proved to be first class in every way. There was a delay in August, but beyond Cousin's control, and we were kept informed every step of the way. Everyone involved - builder Chris, fitter Ian, electrician Dave, and plasterer Tom - have been excellent in their work, and very pleasant to have around. Jackie and team have guided us throughout, and we would recommend them whole heartedly.

Rod Willerton

Review from Google

Five years ago Cousins built our Conservatory. We did at the time record our pleasure not only with the quality and craftsmanship of the conservatory but also with the lack of mess, speed, efficiency, and the craftmanship of the various trades that Cousins employed.

The conservatory which we use most days, summer and winter, still looks as good as new. We recently needed a casement door adjusting. We asked Cousins who we should approach to deal with this. That afternoon a fitter who had carried out the original instillation arrived, and made the adjustment.

After five years this is astounding after sales service. We can only totally recommend Cousins to anyone not only for initial quality of service, but also for the aftercare of their clients.

David & Liz Gee

Written Testimonial

Within the last year the team at Cousins have been amazing from start to finish on our new Conservatory and door and window of the garage. Gavin, Jackie, Phoebe, Jo and everyone else and especially Mick who has been instrumental in making our house a lovely place.

Their attention to detail has been second to none and keeping us up to date at all times. I would thoroughly recommend Cousins if you are thinking of getting work done. Thank you again and we will be using you again soon.

Ed Gilsenan

Review from Google

Hello Jacky and team Just a short note to say ‘thank you’ for our new conservatory. We are delighted with the finished building and appreciate the trouble that you went to get everything absolutely right. All your workmen, particularly Darren and Josh, were very efficient and were a pleasure to have around (as long as gallons of tea were provided!).

Andy and Geraldine Ritchie

Written Testimonial

Dear Cousins Just wanted to say thank you for the lovely bouquet of flowers you sent us on completion of our lovely conservatory. We are just laying a new wooden floor in there and look forward to using it over Christmas and the New Year. Please pass on to all staff concerned, our wishes for a very Happy Christmas and a Happy New Year.

Angel and Martin Russell-Croucher

Written Testimonial

A very good experience from first visit to show through to completion. Excellent attention to detail by Gavin, Jackie and Roger during quotation and specification. Similarly during installation by the two Daves work was carried out efficiently again with good attention to detail and finish. Cousins have transformed an old shabby conservatory into a bright modern living space.

John Sweeney

Review from Google

Dear Cousins Having just received your guarantee document in relation to our new conservatory we’d like to say that we are very pleased with it. It has exceeded our expectations. The construction is excellent, the finish really good. We’d particularly like to commend your teams, Ian and Louis, LJ and his crew for their excellent work. It’s (almost) been a pleasure having them here, despite them drinking us out of tea and coffee and elder-flower cordial. So many thanks to you all for a job very well done.

Ken & Maggie Williams

Written Testimonial

After looking for an ex display office for several months, I finally found one at Cousins Conservatories.

From start to finish, the customer service was second to none, and they even allowed me to put a deposit down until my house move went through.
They arranged for the base to be laid, and the company they used were first class professionals who even turned up the day of Storm Eunice.
The office was finished yesterday, and again it was fitted by an extremely competent company who provided a first class service and nothing was too much trouble. They also gave good advice on the upkeep of the office.

I would have no hesitation in using Cousins Conservatories again.

Carolyn Henton

Review from Google

Hi Sean, Jackie, Gavin and Phoebe,

At Sean's request, here are a few words (probably too many) about the conservatory you sorted for us:

"We were delighted with Cousins from the off and all the way through the process in replacing our dilapidated, defying-gravity conservatory with a brand spanking new one. First off we met Gavin, who gave us a clear idea of the options and outlined the process after we had selected the conservatory we wanted. Jackie ensured each step of the way was straight forward. First off she got builder Chris along who did a fantastic job in getting the foundations sorted. (Tough, tough work). Came up with a great solution to a problem area we weren't sure what to do with (the result drew admiring comments from our neighbours). And he was a lovely chap and such a hard, tidy worker with oodles of personal skills. Matt was next along. A charming. calm, diligent, individual who sorted an area in need of attention across the back of the house above where the conservatory was due to go. He also sorted out guttering and pipes, which were in desperate need of sorting. The conservatory was delivered in bits by a nice chap from the Welsh valleys (who told us tales of how his dad and elder brother helped the stricken children in the Aberfan disaster of the 1960s). Sean, a member of the family which ran the business, came up personally to re-assure us that the storage we provided was adequate. Mick came next to put up the conservatory. Again, another expert with good personal skills. Dave the electrician was another lovely guy. He not only did the electrics in the conservatory but kindly sorted a light at the front of the house. All these guys were so good to talk to, patient and didn't complain about the standard of tea/coffee provided! Builder Chris returned to put the floor (scree?) down. Plasterer Tom was next along and did a fine job before another Chris put down the floor cover with panels we had selected,. Every step of the way was well organised by Jackie, despite having to battle through Covid. But it reflected Cousins' determination to complete the job for Christmas despite her illness, the logistical problems affecting the nation in the wake of Brexit and the coronavirus and the unpredictable weather as winter closed in. We have no hesitation in recommending this family firm who kept all their promises and delivered a conservatory we are proud and delighted to have. Ten out of ten. Thank you."

We would like to thank you all for everything you have done. We are looking forward to spending time in it.."

Mick and Rosemary

Written Testimonial

Dear Sean and Sam Cousins did an excellent job on our new Summerhouse. The building size had to be adjusted for planning reasons due to the proximity of the boundary and this they managed very well. The groundworks were completed very well and with minimal mess.Finally the fitting team arrived the following week and meticulously put together the building with particular attention paid to the cedar shingle roof. They also painted any scuff marks that had occurred during the build at the end of the job. All in all an excellent building and well put together and at a competitive price. We would throughly recommend Cousins to anyone looking for a garden building or similar. Ours certainly looks beautiful.

RL and JI

Written Testimonial

Absolutely brilliant service. Ian the fitter did a an amazing job with our conservatory everything to perfection. Would highly recommend.

Chris Crowhurst

Review from Google

Dear Sean We are delighted with the Summerhouse that you have supplied for us, very well made and constructed. The organisation at your end has been perfect and the people that you sent to do the work were really efficient and good humoured, a pleasure to meet. Your team had to carry all the items a considerable distance. The laying of the concrete base and construction of the building went so smoothly that at one point I began to wonder if I was dreaming.

Simon Dannatt

Written Testimonial

We've always been impressed with our Cousins conservatory. We've had it for 11 years and it's the room we spend the most time in all year round. We've just had the roof upgraded to an ultra frame roofing system, ordered through and fitted by Cousins. The workmanship is great, the roof is fantastic: much better light levels, improved thermal performance (keeps the space cooler on sunny days and warmer in the colder evenings), looks great and is so much quieter than polycarbonate when it rains. We'd recommend Cousins, their products and their fitters very highly indeed.

Sam Evans

Review from Google

Frequently asked questions

We are open  Mon – Sat: 9am to 5:30pm, Sun: 10am to 4:30pm and we are also open every Bank Holiday from 9am to 5:30pm

We are based at Hilliers Garden Centre on Brighton Road in Horsham. Our full address is Cousins Conservatories & Garden Buildings, Brighton Road, Horsham RH13 6QA.

You can click here for directions to us.

We have six display conservatories that feature most of the different configurations that we offer. This includes glass roofs, solid tiled roofs, partially glazed roofs, glass to ground and dwarf walls.

You can click here for directions to us.

We also have up to 80 garden buildings on display at any one time. This includes sheds to summerhouses, garden rooms, log cabins and home offices as well as the South East’s largest display of greenhouses.

You can click here for directions to us.

Area Coverage

From our Horsham based showcentre we provide conservatory and garden buildings all over the south east.