We are a medium sized building and project management company based in East Sussex specialising in extensions, full refurbishments, loft conversations and all other aspects of building. We will undertake jobs of any size at a competitive rate.

30 years experience
Cost effective
Clean & reliable

What we do

Loft Conversions

Need to create more room in your house but don’t have the room to extend, have you considered a loft conversion? We can work with you to create a whole new space.

Home Extensions

We offer extensions to suit your needs, whether that be a conservatory or an extra bedroom and en suite. We have experience fitting Rooflights of all shapes and sizes and created light, open additions to our customers’ homes.


We take on renovations of all sizes, from full refurbs, to knock throughs and Garage conversions.

General Building

We are also available for any other projects you may have around the home, such as building a wall, fitting kitchens and laying a patio.

  • Mr and Mrs Lawrence
    St James building constructed a new modern light living space for us extending from our kitchen and play room to create a semi open plan dining and lounge area, as well as a raised patio accessed through bi fold doors. The quality of work has been superb with great attention to detail particularly regarding the brickwork and quality of windows which are the main feature. The team have always been pleasant to have around and approachable and the communication and project management spot on. We would recommend their services without doubt.
    Mr and Mrs Lawrence
  • Mrs Stockwood-Tyrwhitt
    In Danny you will find that rare and wonderful thing, an honest and professional builder. His team were superb with every single person who came on site being friendly, polite, tidy and an expert in their field. This was extremely important as we lived on site during the build. Danny is quite simply a real pleasure to do business with, and there's a 'no problems, just solutions' attitude with the whole team. The budget was managed precisely and he ensured our substantial project was completed in the time frame requested. The before and after pictures of our build speak volumes about this talented team of people and we are over the moon with our dream forever-home.
    Mrs Stockwood-Tyrwhitt
  • Mr and Mrs Davies
    The friendliness and respect of your team during the project, almost to a man, was really appreciated and made the whole process much easier to endure.
    Mr and Mrs Davies
  • Mr & Mrs Horan
    We were fortunate enough to use St James Building on an extensive home renovation project and could not have been happier with either the process or the outcome. From the initial meetings, planning, implementation and after-care, we felt we were in safe hands. Danny and the team were approachable, professional and respectful. There was an engagement and dedication to the job that impressed us (and our neighbours!). They went the extra mile to ensure the project completed to deadlines set.  There was both a structure yet a flexibility to the project that meant we were involved and communicated with on a regular basis. All snags, problems or changes were dealt with quickly. We had anticipated the project to be stressful but were pleasantly surprised by how it all went. This was in large part credit to Danny and his team. We would highly recommend Danny and St James Building  to others who are seeking a reliable, competent and professional team.
    Mr & Mrs Horan
  • Mr & Mrs D Schmidt
    We hired Danny Hepburn to renovate a small flat that had been empty for a couple of years and was quite derelict. It required a complete gutting and replacement of everything including floor joists, plumbing, electrical, walls, plaster and kitchen and bathroom fixtures and cupboards. The various trades worked well together and the job was started and completed on time and on budget. We ended up with a beautiful and modern flat. We are grateful for the cheerful and professional job done by Danny and his crew.
    Mr & Mrs D Schmidt
  • Mr & Mrs Popple
    Danny and his team carried out some extensive refurbishment work on my house when i moved from London to Lewes last year. He gave me an accurate quote for the work when i was thinking of purchasing the property and got the work done within budget as soon as we completed on the purchase. As my wife was 8 months pregnant it was important to us that it was carried out quickly and as stress free as possible. I would certainly recommend using Danny and his team.
    Mr & Mrs Popple
  • Polly Toynbee
    When my beautiful old back garden wall fell down in a storm this year, Danny rebuilt it with reclaimed old bricks, and it looks splendid! Fairly priced too.
    Polly Toynbee