Design with delivery in mind
Bring commercial, design and construction input together early, coordinating specialist consultants around the project’s objectives.

RESIDENTIAL CONTRACTING
Luxury extensions, apartments, new-build mansards and complete residential transformations across London and the Home Counties. Contracting projects from £200,000 to £2 million.
Discuss your building project
YOUR HOME. YOUR VISION.
We work as the contractor for private homeowners and residential developers, delivering substantial extensions, new residential accommodation and carefully coordinated alterations to existing buildings.
Bring us your architect’s drawings, or involve us earlier through our integrated Design & Build service. We connect the scope, budget and programme before work starts.
CONNECTED EXPERTISE
St Leonards House Ltd. is a sister company to MBmay. Together, we connect development advice, design coordination and practical construction delivery to pursue optimum design, greater efficiency and a well-coordinated build.
Bring commercial, design and construction input together early, coordinating specialist consultants around the project’s objectives.
Consider buildability, specification, procurement, cost and programme together to help reduce avoidable changes and wasted effort.
Carry the agreed brief into coordinated site delivery, with clear responsibilities and communication between the project team.
WHAT WE BUILD
From a beautifully detailed extension to a complete apartment scheme, our services bring the structure, spaces and finishing details together. The images below are illustrative design examples, not photographs of our completed projects.

Create generous kitchen, dining and living spaces that connect the home to its garden. We coordinate structural openings, glazing, building services and finishes around the existing property.

Make better use of the footprint of your home, from a glazed side return to a substantial side extension, with careful attention to access, neighbouring properties and the junctions between old and new.

Deliver new apartments and residential conversions with coordinated layouts, building services, acoustic requirements and high-quality interiors, from structural works through to the final finish.

Add considered roof-level accommodation with newly constructed mansards. We bring together structural works, slate and lead detailing, dormers and interior fit-out within the approved design.

Turn unused roof space into bedrooms, bathrooms or flexible living accommodation, coordinating the staircase, insulation, daylight and practical headroom.

Reimagine coach houses, garages and other outbuildings as self-contained apartments or guest annexes, subject to the necessary consents, with services and access planned from the outset.

Create a dedicated space for fitness, wellbeing or work, with a considered approach to structure, glazing, ventilation, insulation and the surrounding garden.
LOCAL EXPERIENCE
Our work has taken us across some of London and the Home Counties’ established residential neighbourhoods. Locations where we have worked include:
Planning a project elsewhere in London or the Home Counties? Get in touch to discuss your location and scope.
PEOPLE, PROTECTION & DELIVERY
We have built a trusted network of fully certified partners and subcontractors. We also work alongside our clients’ nominated specialists, coordinating responsibilities, information and site activity to support efficient delivery.
Our established partners and subcontractors work with the wider project team and your nominated specialists, bringing their expertise together around the agreed scope, specification and programme.
St Leonards House Ltd. carries £10 million in liability insurance cover.
We have achieved 10-year build warranties on our in-house developments.
Explore our developments and warrantiesFROM BRIEF TO BUILD
Agree the scope and responsibilities early, then keep design, procurement and site activity connected as the work progresses.
Understand your drawings, property, priorities and target programme.
Clarify the works, interfaces, specification and proposed delivery approach.
Manage construction activity and communicate progress and decisions.
Work through inspections, snagging and completion requirements.
LEADERSHIP EXPERIENCE
Selected projects from the leadership team’s earlier roles, as published by MBmay. These represent the team’s wider experience and are separate from St Leonards House’s direct developments.
View photographSeafront residential buildings.
View photographResidential development experience.
View photographResidential development experience.
View photographSelected UK residential project.
View photographSelected UK residential project.
View photographFrom the leadership team’s project archive.
Work with St Leonards House, MB MAY and our trusted professional network from concept through to completion.
Explore Design & BuildSee the direct developments undertaken by St Leonards House Ltd.
View our developmentsLONDON & THE HOME COUNTIES
Tell us about your property, proposed works, budget and preferred timescale. For projects from £200,000 to £2 million, send us your drawings or a short brief to start the conversation.
Email info@slhouse.co.uk