Commercial Contractors in Portsmouth

Are you looking for high-quality commercial contractors in Portsmouth? Grubb & Banks are a long-established joinery manufacturer and building contractor with over forty years of experience. Whether you need small repairs done at your home or have a larger commercial project in mind, we can provide an affordable solution at a competitive price. Give us a call on 02392255331 or drop us an e-mail at


Our Portsmouth Commercial Contractors Services

Grubb & Banks first started trading as a joinery manufacturer over forty years ago. We’ve been established as a building contractor for thirty years now and have become one of the best commercial contractors Portsmouth has to offer. Working with a team of skilled tradesmen, many of whom have been with the company for years, we guarantee excellent service and some of the highest quality work in the Portsmouth area.

Commercial Contractors PortsmouthCommercial

Our operatives provide a maintenance service for commercial properties. Feel free to get in touch with us for a quote with no strings attached. We have a long and storied background in maintenance which puts us ahead of many of our competitors. In Portsmouth, commercial contractors are in high demand and Grubb & Banks are happy to take on new commercial projects.

We are one of the few commercial contractors in Portsmouth who also provide a bespoke joinery service. On top of that, we install kitchens and produce doors, both external and internal. To see the full range of these services, visit the commercial section of our website.


Fire Safety

Grubb & Banks are qualified to ensure that commercial properties are kept safe from any fire hazards. We undertake the following upgrades for fire safety:

  • Supplying and fitting certified fire doors
  • Upgrading existing doors to include smoke and brush seals
  • Installing intumescent fire seals
  • Fitting and linking doors to fire system
  • Ironmongery
  • Installing fire signs
  • Installing emergency lighting
  • Intumescent paint



Regardless of whether you’re looking to get minor repairs done or planning a large-scale construction project, Grubb & Banks can guarantee high-quality workmanship at extremely competitive prices. Get in touch with one of the most professional teams of commercial contractors Portsmouth’s ever known and we can discuss your residential project in detail.

We can add an extension to your home if you need some additional space. We have extensive experience in extensions and will always complete the project within the budget and timeframe agreed. The extensions we build will blend in perfectly with the existing building and people won’t even realize they’ve been added on.

If an extension isn’t an option for you, perhaps we can increase the value of your home with a loft conversion. Due to the detailed nature of a loft conversion project and the many building regulations involved, this is not an area where you should cut costs. At Grubb & Banks, all loft conversions are overseen by an in-house project manager who will ensure this change to your home is up to standard and regulations.


Adapted Living

At Grubb & Banks, we offer adapted living services that comply with the Disability Discrimination Act. We are one of the few commercial contractors Portsmouth has who can fit an accessible toilet from scratch as well as transform an existing toilet to suit the DDA requirements.


Why choose the commercial contractors in Portsmouth from Grubb & Banks

Grubb & Banks have been in the business for more than forty years. We started off as a joinery manufacturer and became a building contractor ten years in. We have varied experience with all kinds of projects both domestic and commercial. As far as Portsmouth commercial contractors go, you can’t go wrong with Grubb & Banks.

We cover a wide spectrum of different projects and are always open to your ideas. We do our very best to make sure you get the exact product and service you require. We are one of the top Portsmouth building companies and are very proud of our client base that includes:Building Contractors Portsmouth

  • Hampshire County Council
  • West Sussex County Council
  • Romec
  • Royal Mail
  • Armitage Venesta Washroom Systems

All of our employees have passed the proper checks and have all the necessary qualifications to ensure they’re up to our high standards. We are very careful about whom he hire and make sure our staff’s skills match what our customers want and what we ourselves expect as established Portsmouth commercial contractors.



If you’d like to see the quality work we’ve done as commercial contractors in Portsmouth, check out the gallery section of our website.



If you have any questions about the services we provide as commercial contractors in Portsmouth or you’d like a quote for your project, don’t hesitate to get in touch. You can call us on 02392255331, drop us an e-mail at, or fill out the contact form on our website.