Selected work · Hertfordshire & London

Construction case studies:
HMO conversions and turnkey builds

Six recent projects in London and Hertfordshire, from a 28-bedroom HMO in West Hampstead to a listed barn conversion in St Albans, with contract values from £150k to £1.3m.

6Featured case studies
£5.15mCombined project value
16–46Week programmes
1 teamDesign to handover
The evidence

What each project involved

Every project brought its own mix of structure, approvals, programme and budget pressures. Each case study sets out the brief, the main challenges and how we delivered it, working with the client, architects, consultants and trades.

Completed Beaumont Mews barn conversion in St Albans
01Listed conversion
Case study 01

Beaumont Mews

St Albans£1.3m46 weeks

Design-and-build conversion of a listed barn into seven holiday-letting apartments, balancing retained character with extensive structural work.

Project detail

Structural repairs, deep foundations and a floating reinforced-concrete slab were coordinated alongside green-belt and archaeological constraints. Original A-frames, flint and brick flooring were retained, with new curtain walling bringing light into the completed scheme.

Completed kitchen at Greencroft Gardens, West HampsteadSecond view of the completed shared kitchen at Greencroft Gardens
02HMO conversion
Case study 02

Greencroft Gardens

West Hampstead£1.2m39 weeks

A design-and-build conversion creating a 28-bedroom, 23-bathroom HMO while preserving and restoring the building’s period character.

Project detail

The programme included underpinning, lowering the existing structure, substantial steelwork and two additional floors. Careful sequencing allowed major interventions to proceed while protecting key heritage features.

Completed timber-frame new-build house in Chorleywood
03Timber-frame new build
Case study 03

Chorleywood

Chorleywood£600k24 weeks

A four-bedroom timber-frame home delivered as a turnkey project, integrating an air-source heat pump and other renewable technologies.

Project detail

JBP coordinated the technical information and buildability decisions needed to maintain momentum despite limited design information at the outset, delivering the complete home within a concentrated programme.

Completed residential conversion in Tooting, London
04HMO conversion and extension
Case study 04

Tooting

Tooting£1.2m28 weeks

Conversion and extension of a residential property into an 18-bedroom, 12-bathroom HMO with a high level of technical coordination.

Project detail

New drainage, utilities and structure were built into the retained building across changing levels, with detailing that respects the original house.

Completed HMO refurbishment in Maida Vale, London
05HMO refurbishment
Case study 05

Maida Vale

Maida Vale£700k24 weeks

A 10-bedroom, five-bathroom HMO refurbishment that required responsive structural problem-solving and design coordination.

Project detail

Structural defects found during the work led to design changes. JBP coordinated the response, and the reworked layout gained an extra bedroom and three more bathrooms.

£150kHMO refurbishment · 16 weeks
Case study 06

Berwick Road

Tottenham4-bed HMO16 weeks

A rundown semi-detached house in Tottenham turned into a four-bedroom HMO on a 16-week programme.

Project detail

Hidden structural problems were found during the work. We assessed them quickly, adjusted the plan and finished the property within the agreed programme.

How we deliver

How we deliver every project

Good results depend on the work behind the scenes: checking the information, planning the order of work, managing risk and keeping everyone informed.

01 Early buildability input
02 Design coordination
03 Cost visibility
04 Programme management
05 Site quality control
06 Planned handover

Planning an HMO conversion or turnkey build?

Tell us about the property and what you want to achieve, and we’ll call you back to talk it through.

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