Bathroom Extensions
Bathroom Extensions in Hertfordshire, Bedfordshire & Cambridgeshire
One bathroom for the whole household rarely works. LJT Construction has been designing and building bathroom extensions across Hitchin, Bedford, Cambridge and the surrounding areas for almost 20 years, adding en-suites and family bathrooms that ease the daily rush.
Introduction
A house with only one bathroom becomes a daily bottleneck as a family grows. A bathroom extension adds a second bathroom, an en-suite, or a downstairs WC exactly where it’s needed, without sacrificing an existing bedroom to do it. We manage every stage ourselves, from design and planning through to tiling and fittings, so you get a finished room rather than a list of jobs handed between trades.
Ways We Add Bathroom Space
- Over-Garage or Rear Extensions : Building out over a garage or extending the rear of the property is a common way to add a full family bathroom or en-suite without touching existing bedroom space.
- En-Suite Additions : Carving space from a generous bedroom, or extending slightly into a landing or over a stairwell, to give the main bedroom its own private en-suite.
- Ground-Floor WCs : A small extension or reworked porch/utility space to add a downstairs toilet — one of the most requested and cost-effective additions for busy households.
- Loft En-Suites : When combined with a loft conversion, we can add an en-suite bathroom into the new upstairs space, maximising the value of the conversion.
Why Choose LJT Construction
- Almost 20 years of experience building bathroom extensions across Hertfordshire, Bedfordshire and Cambridgeshire
- One point of contact from design through to completion — no chasing multiple trades
- Structural work, plumbing and waste runs carried out to full Building Regulations standard
- Experience with tanking, tiling and ventilation to keep bathrooms damp-free for years to come
- Clear, honest quotes with no hidden extras
- Careful, tidy site work — we treat your home with respect while we're in it
Our Process
Free consultation and survey
we visit your property, discuss what’s missing from your current bathroom setup, and advise on the right location and layout.
Design and planning
we produce drawings and handle Building Regulations applications, and planning permission where needed.
Structural work and first fix
foundations or roof alterations where relevant, plus plumbing, waste runs and electrics.
Second fix
tiling, tanking, flooring and fitting the suite.
Finishing touches
decoration, sealing and a final walkthrough so you’re completely happy before we leave.
Do You Need Planning Permission?
Many bathroom extensions, particularly smaller additions like a downstairs WC or an en-suite within existing roof space, fall under permitted development rights and don’t need full planning permission. Larger extensions may require an application. Building Regulations approval is always required, particularly around drainage, ventilation and electrics in bathrooms. We’ll assess your property at the free survey stage and handle any applications on your behalf.
FREQUENTLY ASKED QUESTIONS
How long does a bathroom extension take?
Most bathroom extensions take 6 to 10 weeks from start to finish, depending on size and whether structural work is involved. We’ll give you a clear timeline before work begins.
Can you fit the suite and tiling as well as the building work?
Yes — we handle the full project including tanking, tiling, and fitting the bath, shower, basin and toilet, so you’re not left coordinating separate trades.
Will I lose water pressure adding an extra bathroom?
It depends on your existing plumbing and boiler setup. We assess this at the survey stage and advise if any upgrades are needed to keep pressure strong in every bathroom.
How much does a bathroom extension cost?
Cost depends on the size, location, and specification of fittings and tiling. We provide a detailed, no-obligation quote after a free site survey, so you know exactly what you’re paying for before committing.
Ready to end the morning queue for the bathroom?
Get in touch today for a free, no-obligation bathroom extension quote and friendly advice from a builder who’s seen it all.