Our founder has spent more than 25 years in construction across South London. Bathrooms became the work we are most passionate about, where precision, planning and finish matter most.
When we finish, the room should look right on day one, and still look right years later.
A bathroom is the most demanding room in a home to get right. Water finds every weakness, and every tile, fixture and fitting is judged up close, every single day. That is why we plan each project in detail before work begins (layout, waterproofing, services, materials and finishes) so that nothing is left to chance on site.
We can enlarge your bathroom, reconfigure the layout and move pipework and services, not only replace what's there.
A complete strip-out and refit: plumbing, waterproofing, tiling and finishing. All new pipework is pressure-tested before it’s covered. Floors and traffic areas are protected for the whole job.
We can enlarge your bathroom, reconfigure the layout and move pipework, drainage and services. Structural alterations carry a 10-year guarantee.
Fully waterproofed, level-access wet rooms with seamless drainage and premium wall finishes.
Designed and built to make the most of every centimetre, increasing both comfort and property value.
New tiles, updated plumbing and modern fixtures, transforming a tired space with minimal disruption.
Floor-to-ceiling tiling and waterproofing, built to perform in London’s older properties.
A standard bathroom typically takes two to three weeks. That means no walls moved and no structural alterations.
Our prices cover labour, building materials and first-fix plumbing.
Hidden problems, such as rot, failed old pipework or structural defects, only show up once old surfaces come off. If we find one, we stop, show you, and price the fix separately before going further.
The size of the room, layout changes, moving drainage or services, the tiles and fittings you choose, and the condition of an older house.
Whether tiles, sanitaryware, fixtures and fittings are supplied by you or by us is agreed up front and written into your fixed quote.
We meet to understand your space, requirements, and budget — no obligation and no pressure.
We help you choose layout, fixtures, and finishes, and programme the strip-out and installation in detail before a single tile is ordered.
A detailed written quote, agreed before any work begins. The price covers everything in the quote, and nothing is added without your written approval.
Our team carries out every element, with one point of contact keeping you informed throughout.
A final walkthrough, your satisfaction confirmed, and all documentation and warranties delivered.
"Good old-fashioned quality service with modern day efficiency. I can recommend Fellner Construction with absolutely no reservations."Gordon, DA12
"The quality of the work and the attention to detail were outstanding. … We are absolutely delighted with our new bathroom — they have transformed it into a beautiful space that I will enjoy for many years to come."Iryna F., Google review
"The quality of finish, professionalism and complete integrity has been second to none. The team arrived early and worked late to keep on schedule. 10/10."Rachel, CR3
"As an engineer, I pay close attention to detail and value work that is not only visually good but also structurally sound. With Fellner Construction, you don’t have to worry about what’s hidden behind the walls — everything is done properly, with durability in mind and no corners cut."Evgeniy B., Google review
We also take on a select number of extension and renovation projects each year.
Free consultation · Fixed-price quote · Response within one working day · South London