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Business Details
16 Years
experience
Bespoke Windows, Doors & Conservatories in West Sussex
Established in 2010, Benchmark Windows has built a reputation as a trusted provider of bespoke windows, doors, and conservatories across Sussex. Our team combines over 60 years of collective industry experience with a commitment to quality, offering tailored solutions that enhance both residential and commercial properties. As members of the Double Glazing & Conservatory Ombudsmen Scheme (DGCOS), we prioritise customer satisfaction through expert installation, energy-efficient designs, and eco-conscious practices.

Our services span from initial consultation to final installation, ensuring durability, security, and aesthetic appeal. With a state-of-the-art showroom in Lancing, we provide hands-on guidance to help clients select products that align with their needs and architectural style.
Services
Bespoke Windows Conservatories Glazing Solutions Door Installations Energy-Efficient Upgrades
Details
  • Year established: 2010
Highlights and features
  • We offer over 60 years of combined industry experience in bespoke glazing solutions.
  • Our products are designed for energy efficiency, security, and low maintenance.
  • We are accredited members of the DGCOS, ensuring customer peace of mind.
  • Our eco-friendly practices include recycling over 90% of installation waste.
  • We provide end-to-end service from design to installation with tailored support.
Associations and certifications
  • Double Glazing & Conservatory Ombudsmen Scheme (DGCOS)
Services
Bespoke Windows
Our bespoke windows are tailored to match your home's style, offering materials like PVC-U, aluminium, and timber. Designed for energy efficiency and security, they reduce noise and enhance property value. Expert installation ensures a perfect fit.
Conservatories
We design and install luxury conservatories in styles such as Victorian, Edwardian, and orangery. Built with durable, thermally efficient materials, these spaces add functional living areas while maintaining aesthetic harmony with your property.
Glazing Solutions
From frameless glass doors to balustrades, our glazing solutions combine modern technology with practical benefits. Features include self-cleaning glass, solar control, and low-maintenance durability for both residential and commercial properties.
Door Installations
We supply and fit doors in materials like composite, timber, and steel, prioritising security and insulation. Options include residential French doors, commercial fire doors, and folding designs, all with expert installation and long guarantees.
Energy-Efficient Upgrades
Our energy-efficient upgrades reduce heating costs and carbon footprints. Double and triple glazing, low-E glass, and draught-proofing solutions ensure year-round comfort while meeting modern environmental standards.
Questions
What areas do you serve?
We operate across West Sussex, including Lancing, Brighton, and Worthing, with nationwide inquiries welcomed.
Are your products energy efficient?
Yes, all windows and doors meet strict energy efficiency standards, featuring thermal insulation and draught-proofing.
Do you offer a guarantee?
We provide a minimum 10-year guarantee on all products and installations for added peace of mind.
Can I visit your showroom?
Yes, our state-of-the-art showroom in Lancing is open by appointment to explore our full product range.
Are you accredited by industry bodies?
We are proud members of the Double Glazing & Conservatory Ombudsmen Scheme (DGCOS) for quality assurance.
Do you recycle installation waste?
Over 90% of our installation waste is recycled, reflecting our commitment to eco-friendly practices.
Reviews (2)
Andrew Kelly
Aug 24, 2020 Report
A positive initial visit hosted by Clayton. Knowledgeable and informative and very professional. Looks like quality products.
Kate Perrins-Tester
Dec 12, 2019 Report
Benchmark replaced patio doors with Bifold doors with blinds fitted within the windows in our kitchen. We are very pleased indeed. As a family we took so much time deciding what kind of doors to have. We even changed our mind on the day that the measurements were taken! Throughout the process every member of Benchmark staff was helpful, patient and informative. The most important thing for us was having a top quality door fitted well we haven't been disappointed at all. Thank you Benchmark.