Comprehensive design, construction and project management
for discerning clients across London's residential sector
At Structum, we offer a comprehensive range of services across the residential sector of the construction industry. Established in 2009, we have since maintained our stellar reputation of quality and efficiency throughout the entire building process.
We work in close collaboration with our in-house contractors, architects, project managers and engineers.
This allows us to offer a wider range of services from private residential projects to much larger corporate developments. We act as the main contractor on a vast array of projects, co-ordinating all stages from initial design through to project completion.
At Structum we are able to provide a comprehensive service tailored to the needs of each project, as well as to the needs of our clients. We aim to ensure that each project is delivered to the highest specification standards, within the agreed budget and timeframes.
At Structum, we envision an industry where all participants of the built environment from architects to structural engineers can communicate seamlessly with a focus on quality and efficiency in the building process.
Our mission is to under-promise and over-deliver on all our projects, with a non-compromising attitude toward delivering buildings with exceptional quality assurance, keeping costs within budgets and delivering projects within specified timeframes.
Discover how Structum transforms exceptional properties across London through masterful design, meticulous planning, and flawless execution. Each project represents our unwavering commitment to excellence.
A sophisticated rear extension transforms a charming two-bedroom property into a contemporary family home.
This beautifully proportioned two-bedroom property in one of Notting Hill's most desirable streets presented an opportunity to create additional living space whilst enhancing the connection between interior and garden. Our clients, a young professional couple, sought to maximise their ground floor footprint and create a light-filled kitchen and dining area perfect for entertaining.
Working closely with architects specialising in conservation area developments, we designed a contemporary glass and steel extension that complements the Victorian property's original character. The 450 square foot addition features floor-to-ceiling sliding glass doors, integrated underfloor heating, and bespoke joinery throughout. Structural calculations and steel beam installation were executed with precision to create an open-plan space that flows seamlessly from the traditional front reception rooms.
Planning approval in this sought-after conservation area required careful consultation with local authorities. Our expertise in navigating planning regulations ensured approval within the first submission. The nine-month build programme was completed on schedule, with the property remaining habitable throughout thanks to meticulous project sequencing and dust mitigation strategies.
Extension
1,350 sq ft
9 Months
2 Bed
£1,164,500
Structum delivered exactly what we envisioned. Their attention to detail and commitment to quality transformed our home. The extension feels like it's always been part of the house, and we now have the perfect space for entertaining.
Elegant conservatory addition and master suite upgrade elevate this prestigious two-bedroom property.
Located within one of Belgravia's most distinguished garden squares, this two-bedroom apartment presented a unique opportunity for enhancement. Our clients, discerning international buyers, required additional living space and a luxurious master suite befitting the property's prime location and period features.
The scope encompassed two primary elements: a bespoke conservatory extension creating 300 square feet of additional reception space, and the transformation of the master bedroom to include a spa-quality en-suite bathroom. The conservatory design required meticulous attention to conservation area regulations, with every detail—from the heritage-style glazing to the sympathetic roof design—carefully considered to gain planning approval.
Our craftsmen worked with precision to integrate the new conservatory seamlessly with the property's Victorian architecture. The master en-suite features marble surfaces sourced from Italy, Dornbracht fixtures, underfloor heating, and a freestanding soaking tub positioned to capture natural light. The twelve-month project timeline allowed for the careful sourcing of materials and execution of work to the highest specification.
Extension & Refurb
1,650 sq ft
12 Months
2 Bed
£2,312,000
The quality of workmanship is exceptional. Structum's ability to navigate the complexities of working in a conservation area while delivering to such high standards demonstrates their expertise. The conservatory and en-suite have completely transformed how we live in the property.
Total transformation of a one-bedroom apartment into a contemporary urban retreat.
This charming one-bedroom apartment in the heart of Wimbledon Village presented an opportunity for complete reinvention. The property, whilst structurally sound, featured outdated fixtures, inefficient layouts, and finishes that failed to reflect the prestigious location. Our client, a young professional relocating to London, sought a modern, efficient living space that maximised every square foot.
The comprehensive renovation encompassed every aspect of the interior: complete rewiring and plumbing replacement, removal of internal walls to create an open-plan living area, installation of a bespoke kitchen with integrated appliances, and a luxurious bathroom transformation featuring contemporary tiles and premium fixtures. We specified engineered oak flooring throughout, integrated LED lighting, and underfloor heating in the bathroom for year-round comfort.
Working within the constraints of an occupied building with shared access required meticulous planning and considerate execution. Our team coordinated all trades efficiently, maintained clear communication with building management and neighbours, and completed the eight-month renovation on schedule. The result is a sophisticated, turnkey apartment that perfectly balances style, functionality, and location.
Full Renovation
650 sq ft
8 Months
1 Bed
£410,125
Structum transformed my apartment beyond recognition. Every detail was considered, from the layout to the lighting. The quality of finishes is exceptional, and they completed everything on time despite the challenges of working in an occupied building.
Sensitive extension and interior reconfiguration adds essential bathroom space to period cottage.
This characterful two-bedroom Victorian cottage in a quiet Hammersmith street possessed considerable charm but a significant limitation: a single bathroom serving both bedrooms and living areas. Our clients, a young couple planning to start a family, required a practical solution that would add a second bathroom without compromising the cottage's period character or sacrificing living space.
Working with conservation-focused architects, we designed a modest single-storey rear extension creating 120 square feet of additional space. This allowed us to install a fully equipped second bathroom on the ground floor whilst simultaneously reconfiguring the first floor to create an en-suite shower room for the master bedroom. The design carefully respected the cottage's Victorian proportions and materiality, using traditional brickwork externally and period-appropriate fixtures and fittings internally.
The ten-month project required careful navigation of planning restrictions in this residential area. Our expertise in local authority liaison secured approval, and our craftsmen executed the work with minimal disruption to the neighbouring properties. The new bathroom features underfloor heating, a freestanding bathtub, and separate shower enclosure, whilst the upstairs en-suite provides convenient morning functionality. The result enhances the property's practicality whilst preserving its period appeal.
Extension & Addition
950 sq ft
10 Months
2 Bed
£700,188
Structum understood exactly what we needed and delivered beautifully. The extension looks like it's always been part of the cottage, and having two bathrooms has completely changed how we live in the house. Their attention to period detail was impressive.
Bespoke garden annexe creates versatile living space with complete independence and modern comfort.
This detached garden annexe project in the sought-after Harrow on the Hill area presented an exciting opportunity to create a completely self-contained one-bedroom dwelling within a mature residential garden. Our clients, homeowners with a substantial property and extensive grounds, required flexible accommodation that could serve multiple purposes: a home office, guest suite, or potential rental income opportunity, all whilst maintaining their main house's privacy.
Working closely with planning consultants and architects specialising in permitted development, we designed a contemporary 550 square foot structure that maximised the permitted development allowances whilst creating a practical and stylish living space. The single-storey build features an open-plan kitchen and living area with bi-fold doors opening onto a private terrace, a generously proportioned bedroom with built-in storage, and a luxurious wet room-style bathroom with underfloor heating throughout.
The construction utilised a timber frame system with brick exterior cladding to complement the main house, high-performance insulation exceeding building regulations, and triple-glazed windows for energy efficiency. All services—electricity, water, and drainage—were carefully connected from the main property whilst maintaining independence. The eleven-month build programme included comprehensive landscaping to integrate the annexe seamlessly into the established garden setting. The result is a versatile, high-specification dwelling that adds substantial value and functionality to the property.
New Build Annexe
550 sq ft
11 Months
1 Bed
£210,588
Structum delivered a garden annexe that exceeded all our expectations. The quality of construction is exceptional, and it's proven incredibly versatile—we've used it as a guest suite, home office, and now it generates rental income. The attention to detail and project management throughout was first-class.
From initial concept to final handover, we manage every aspect of your residential construction project with meticulous attention to detail and unwavering commitment to excellence.
With a history of delivering sustainable design and build projects, we offer a complete solution package for developers, offering administrative and technical support from the conception to completion phases, always mindful of set budgets and timeframes.
From the initial stages of feasibility studies and planning, technical design and execution, right through to the monitoring, delivery, and marketing stages, we work very closely with our clients, gaining a comprehensive understanding of their needs in order to deliver the outstanding results Structum has become known for.
Our commercial contracts have covered a broad array of projects which have been some of our most fulfilling work so far. In complete contrast to the smaller residential works on extensions, our team at Structum have worked on full property renovations and complete refurbishment projects for commercial use.
Having grown as a strong team of experts with extensive knowledge and experience in the construction industry, we are able to offer consultancy services to advise, plan, and execute conversion projects of any size, with the knowledge that conversions present more of a challenge than straightforward new-build projects.
We use our extensive experience when it comes to joint venture projects. Unlike other contractors, our aim is simple: offer our clients the best quality product at the least possible inconvenience.
As the construction industry appears to be evolving rapidly with the continued introduction of advanced technologies, we pride ourselves in keeping abreast of such changes in order to take advantage of the amazing opportunities such technologies offer for innovation and the augmentation of our capabilities.
Over the past five years, the company has made a strategic and considered decision to be highly selective with the clients and projects it takes on. This approach ensures the best possible outcomes and allows us to provide clients with truly bespoke and exclusive services.
As such, all new enquiries are considered on an invitation-only basis. Prospective clients should complete the online enquiry form. Submissions are reviewed carefully, and only those that meet the company's criteria will receive a response.
At present, due to a full schedule and ongoing commitments to existing clients, we are not accepting new projects. A waiting list is in operation, with availability projected for October–November 2026.
In the event of earlier availability, clients on the waiting list will be contacted in the order in which they were accepted.
Complete the enquiry form below to be considered for our exclusive client roster. All submissions are reviewed carefully, and only those meeting our criteria will receive a response.
Structum Build
Unit 3 AB, 34-35 Hatton Garden
Holborn, London
EC1N 8DX
United Kingdom
All enquiry submissions are reviewed within 5-7 business days. Only applications meeting our selection criteria will receive a response.
October - November 2026
Monday - Friday: 9:00 AM - 6:00 PM
Saturday - Sunday: Closed