Loft Conversions
Turn unused loft space into a light-filled bedroom, home office or en-suite. We handle the full conversion — structural floor, dormers or rooflights, staircase, insulation and a finished, regulation-compliant room — designed to add real space and lasting value to your home.
Expert loft conversions across Hertfordshire
Turn unused loft space into a light-filled bedroom, home office or en-suite. We handle the full conversion — structural floor, dormers or rooflights, staircase, insulation and a finished, regulation-compliant room — designed to add real space and lasting value to your home. We're proud to be trusted loft conversion specialists, rated 4.9/5 by 115+ homeowners across Hertfordshire and North London.
- Dormer, hip-to-gable & rooflight
- Structural floor & staircase
- Insulation & fire-regs compliant
- En-suite & built-in storage
Why homeowners trust us with their loft conversions
Premium, high quality finish in every detail
Punctual, reliable and finished on schedule
Clean and tidy — your home protected every day
Fully insured with a workmanship guarantee
Rated 4.9/5
“Not a single thing I can fault”
I wanted to make sure I was giving an honest review so I waited to really put the new bathroom to the test... There is not a single thing I can fault! The Nicolla Contractors team were excellent at communication, timekeeping and professional in all manners. They gave some unreal advice on the best products and materials to use within the bathroom for a long lasting high end finish. … Nothing was ever too much trouble and I can not recommend them enough. … I HIGHLY HIGHLY recommend!
Loft Conversions across our areas
Common questions
Most are. The key factors are the usable head height, the roof pitch and the existing structure. We carry out a free survey to measure the available height and advise on the best conversion type — rooflight, dormer or hip-to-gable — for your roof.