db designs

db Designs is Surrey's leading independent windows, doors & conservatories specialist. A family owned business set up in 1991, based in the Heart of Surrey, the company has been delivering first class work consistently for 30 years. This is evident in its repeat business and word of mouth recommendations.

db Designs' prices are the most competitive around. Whether it's a bespoke conservatory, installation of a cat flap, or repairs to existing timber windows; their products, installations and service are second to none.

Work holds a full ten year insurance backed guarantee*. All products can also comply with window energy ratings up to band A.

DB Designs will happily quote for and carry out work in the home counties and into London.

*subject to manufacturers' guarantees


We can supply and fit a wide range of windows to suit any requirement.
PVC-U (also known as uPVC) are our most popular product as they are cost effective, smart and virtually maintenance free. We can also now supply our PVC-U windows in a huge choice of colours. With the latest technologies providing excellent weather protection, security and strength our windows offer exceptional insulation and energy efficiency.
Our PVC-U ranges provide excellent value for money and will give many years of service.

We also supply and fit sash windows, hardwood windows and aluminium windows. We have a large range of glazing options available including double glazed and triple glazed, georgian bar and leaded finishes.

Some of the popular types of windows that we supply and fit:

  • Classic Casement Windows
  • French Casement Windows
  • Flush Casement Windows
  • Tilt-And-Turn Windows
  • Fully Reversible Windows
  • Vertical Sliding Sash Windows
  • Georgian Astragal Bars


We can supply and fit a large range of external doors. These include front doors, back doors, french windows, sliding patio doors and our increasingly popular bi-fold doors.

Bi-Fold Doors

db Designs offer a wide range of high quality sliding aluminium bi-fold doors for installation throughout Surrey, Sussex and South London. These are the most flexible system of external doors, allowing for a single hinged door to be opened for easy access, or the whole row of glass panels to be slid to the side, opening up the whole aperture and removing any division between your home and your garden.

All of our aluminium sliding bi-fold doors offer:

  • Wide range of configuration options
  • Minimal profiles for a modern look
  • Complete range of handles and accessories
  • Unique flush line pop-out handle option
  • Full range of standard and bespoke colours
  • Dual colour option for inside and out
  • Chamfered and square bead options
  • Sturdy and reliable sliding mechanism
  • Low threshold option for room dividers
  • High performance as standard

Invite the outside in and the inside out!

Front Doors

Our front doors are one of the best systems in the industry, utilising the latest materials to provide high levels of security, insulation and finish. With many options of colour, finish, side windows, glass styles and door furniture.

About Us

Example replacement uPVC windows, installed by db Designs

Founder and owner Dominic Bisping has been running the business for 30 years. Originally serving an apprenticeship as a mechanical engineer and then qualifying as a carpenter and joiner, Dominic has an excellent understanding of all aspects of the construction business. He carries out all initial sales appointments in person and his plethora of knowledge ensures that all advice he gives is precise and genuine.

Dominic's wife Sally runs the office and showroom and importantly is responsible for all registrations and guarantees of work.

Example replacement uPVC windows, installed by db Designs

Customer Testimonials

Pleased to say the house is noticeably warmer since the new windows were installed so I think we can say we have done our bit for climate change! More importantly, I hope the gas bills will go down a bit.


We are both pleased with the service provided and also the quality of the fitted units. ln particular, your team has a good eye for attention to detail and also did an excellent job in clearing up afterwards.

Peter Wilson

I just wanted to let you know how delighted we are with the new windows and patio doors. Your guys were so brilliant and absolutely professional so please pass on our thanks to them too.

Just wanted to say we absolutely love the door, it's beautiful! We're so pleased. The gents that came to fit were so efficient and left it so nice and tidy. Thank you.

I had hoped to be home in time tonight to thank the guys. They were as good as gold and a pleasure to have in the home. Please give the team my upmost thanks for a job well done. The windows look great and it feels warmer already.


Please thank Chris, John and Lee for their excellent work yesterday. They worked quickly and efficiently, with the minimum of disruption and tidied up immaculately afterwards.
Job well done.

We are getting great pleasure from the conservatory and with the exception of the very hottest days in the summer I can confirm that you were correct that the roof deflected a lot of the heat and sitting in was no problem. Well done and thank you.

Philip and Sandra

We are thrilled with both the quality of the windows and your fitters, who were very professional and polite.

A. Aindow - Cobham

We are delighted with our new windows and doors.

Your fitters were wonderful. Very polite and tidy. There is hardly any making good to be done on the inside around the window boards – we expected to have to repaper, but there is no need.

L. Collumbell - Ashtead

Our new front door is in, and it looks fab. The boys did a very neat job too.

M. Williams

Julie and I are very happy with our new doors. The profile gives a lovely sleek finish which we are both very happy with.

Can you pass on our big thanks to the fitters, the installation was amazing. The finish is flawless. Apart from the doors being brand new you can hardly tell the difference. The site was left spotless as well.

Julie & Hunter - Epsom

I wanted to tell you how pleased we are with the windows and the whole job fitted by John and Shaun. They are excellent workers and we recommend your firm and installers to all who are keen to find out who did the work.

They were considerate, very clean, tidied up after work every day (weather was awful) and worked very hard.

Kathy & Eddie - Ashtead

We had the quarterly church hall committee meeting this week and everyone was hugely impressed with the work you’ve done.

Roy - St Lawrence Church Hall, Effingham

Contact Us

Our office and phone lines are open from 8am to 5pm Monday to Friday

Our Leatherhead showroom is open by appointment. Please contact us if you would like to visit us:

Email: [email protected]

Phone: 01372 451 777

Fax: 01372 457 886

Example replacement uPVC windows, installed by db Designs

Find Us

Our office and phonelines are open from 9am to 5pm Monday to Friday