Builders in St Albans · Hertfordshire & North London

Construction, Renovation
& Conversion Specialists

Built properly, managed transparently.

JBP Developments is a construction company based in St Albans, delivering renovations, conversions and turnkey new builds across Hertfordshire, Bedfordshire and North London. From design and cost planning through to construction and completion, one team manages the entire project for property owners, investors and architects.

About JBP Developments

Complex residential projects, built properly

Our work covers turnkey new builds and design and build projects, renovations of period and listed buildings, and conversions and refurbishments, including HMOs.

Most of our projects involve an existing building that has to change a lot: new structure, extra floors, more bedrooms and bathrooms, or a heritage building brought back into use. One team handles the design, the cost and the build, so you deal with the people responsible for the work from the first drawings to handover.

Shared kitchen with cooking stations, a period fireplace and decorative ceiling at the Greencroft Gardens HMO, West Hampstead
Greencroft Gardens, West Hampstead: a townhouse extended by two floors and converted into a 28-bedroom HMO.
Selected work

Recent conversions and projects

A listed barn conversion at Beaumont Mews in St Albans, a 28-bedroom HMO conversion at Greencroft Gardens in West Hampstead and a turnkey timber-frame home in Chorleywood. Each case study covers the scope, the main challenges and how we delivered it.

6Featured case studies
£5.15mCombined project value
Since 2015Founded in St Albans
16–46Week programmes
Why JBP

What makes JBP different

Plenty of builders can put up a new home. Fewer are comfortable inside a listed barn or a townhouse that needs two more floors. That is where most of our work happens.

01

Led by construction managers

Our directors are construction managers by profession, so decisions on your project are made by people who understand the design, the cost and the build.

02

Experienced with difficult buildings

Underpinning and two extra floors at Greencroft Gardens. A listed barn rebuilt around its original frame at Beaumont Mews. Hidden structural defects at Maida Vale, turned into an extra bedroom and three bathrooms.

03

One team from drawings to handover

Design, cost and construction sit with one team, so nothing falls into the gap between the people who draw it and the people who build it.

04

You always know where things stand

Site reports, photos, costs and decisions are recorded as the work happens, and you get regular updates in plain English.

Who we work for

Built for homeowners, investors and architects

Homeowners, property investors and architects each need something different from a builder. Here is how we work with each of them.

01

Homeowners

New homes, conversions and major refurbishments delivered turnkey by one team, like our timber-frame new build in Chorleywood.

02

Property investors and landlords

HMO conversions and refurbishments that add bedrooms and bathrooms, from a four-bedroom refurbishment in Tottenham to a 28-bedroom conversion in West Hampstead.

Finished residential interior by JBP Developments
For architects & consultants

A contractor who protects the design intent

We join professional teams at pre-construction stage to test buildability, coordinate technical information and keep everyone informed through the build.

01 Early contractor involvement
02 Tender and scope review
03 Design coordination
04 Cost and programme input
Client feedback

What our clients say

“Their dedication to quality… every aspect of the project is completed to the highest standards.”Mrs Lewis
“The team at JBP was professional, reliable, and truly dedicated to delivering the best possible outcome for my family.”Mr Higham
Before you enquire

Questions clients ask before starting

The questions homeowners, investors and architects most often ask us first.

Still shaping your brief? Read our guides to planning a construction project and what a turnkey construction service involves.

£150k+Typical featured project value
3 regionsHertfordshire, Bedfordshire and North London
Any stageFeasibility through aftercare
What construction services does JBP provide?

Our main services are HMO conversions and turnkey design and build. We also offer traditional construction for architect-led projects, project management, cost consultancy, technical management, and maintenance and aftercare.

Where does JBP work?

We are based in St Albans and work across Hertfordshire, Bedfordshire and North London. Our HMO projects include West Hampstead, Maida Vale, Tottenham and Tooting.

When should we involve JBP?

As early as you can, so buildability, programme and cost can be reviewed before work reaches site. We can also join at tender or construction stage if the design is already developed.

Does JBP work with architects and consultants?

Yes. JBP works with architects, structural engineers, services consultants and other professional teams through tendering, technical coordination and construction delivery.

How will our project be managed?

You get a named contact, regular progress reports with photos, and early warning of any decision that could affect cost or programme.

What should we send with an initial enquiry?

A short description, the location, any drawings or photos, a rough budget and your timescale. If you don’t have everything yet, we can work out what’s missing on the first call.

Talk to us about your project

Tell us what you’re planning. The first conversation is free.

Start a project enquiry →
Call 07782 338715Start an enquiry

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