Welcome to JT Allen: Your Trusted South East London Builders
Based in the heart of South East London, JT Allen is a premier building company serving Dulwich, Greenwich, Blackheath and surrounding areas with over 35 years of industry experience. We’ve built our reputation on trust, integrity, and exceptional workmanship.
We understand that any building project is a significant investment. That’s why we pride ourselves on two core principles: unwavering quality and precise timekeeping. Our team is committed to completing your project to the highest standard, on schedule and on budget.
Our Story
JT Allen was founded with a simple but powerful vision: to deliver exceptional building work with unwavering integrity, superior craftsmanship, and genuine care for every customer. What started as a small operation has grown into one of South East London’s most trusted building companies, but our core values remain exactly the same.
We’re genuinely local to the communities we serve. This means we’re not just your builders — we’re your neighbours. We understand the area, we know local planning requirements, and we’re invested in the reputation we’ve built here over more than three decades.
Our Expertise
- 35+ years of building industry experience
- 200+ completed loft conversions, extensions and renovations
- Specialists in maximising home potential and adding value
- Experts in South East London building regulations and planning
- Passionate about delivering projects on time and on budget
What Makes Our Team Special
Highly Skilled Craftsmen
Every team member brings years of experience and genuine passion for their craft. From carpentry to bricklaying, plastering to electrical work, our tradespeople take pride in exceeding expectations.
Reliability You Can Count On
When we say we'll be there at 8am Monday morning, we're there. Our team understands your time is valuable and having builders in your home requires trust. We honour that trust with punctuality and professionalism.
Meticulous & Tidy
We maintain a clean, organised work site throughout your project. At the end of each day, we clean up properly. Your home is your sanctuary, and we treat it with respect.
Clear Communicators
No jargon, no surprises. We explain everything in plain English, keep you updated regularly, and welcome your questions at any time.
Our Values
- Integrity First — We do what we say we'll do
- Craftsmanship Matters — Pride in every detail
- Respect for Your Home — Treated as if it were our own
- Clear Communication — No surprises, no confusion
- Customer Satisfaction — Your happiness is our success
Get Your Free Quote Today
Ready to start your project? Contact JT Allen for a free, no-obligation consultation.
- 07734 975051
- sales@jtallen.co.uk
- 12 Waterford, Battlesbridge, Essex, SS2 7GT