Business Details
19 Years
experience
Residential Architecture & Sustainable Design Solutions
Maria Demargne Architects specialises in creating beautifully designed, naturally lit spaces that harmonise with modern living requirements while prioritising environmental sustainability. With over two decades of experience in residential architecture, including projects within conservation areas, we deliver tailored contemporary solutions aligned with individual client needs, building constraints, and budgetary considerations. Our founder, Maria Demargne, graduated from E.T.S.A.B. Barcelona in 1997 and holds a Masters in Environmental Design in Architecture from the University of Cambridge.Since establishing the practice in 2007, we have completed 160 projects, cultivating long-term client relationships and a trusted network of contractors and consultants. Our comprehensive services span concept development, planning approvals, technical design, and construction supervision, with a particular emphasis on energy-efficient renovations, extensions, and adaptive reuse of basements and lofts. Operating across Kew, Richmond, and West London, we combine architectural innovation with practical expertise to enhance property value and occupant wellbeing.
Services
Residential Projects
Full Renovations
Extensions
Loft Conversions
Basements
Landscaping
Garden Buildings
Sustainable Design
Commercial Services
Details
- Year established: 2007
Highlights and features
- Specialists in conservation area projects with 20+ years' experience
- Comprehensive service from planning to construction supervision
- Proven track record of 160 completed residential projects
- Established network of trusted contractors and consultants
- Focus on energy-efficient, naturally lit architectural solutions
Services
Residential Projects
We specialise in creating tailored residential solutions that enhance living spaces while maintaining architectural integrity. Our expertise includes navigating planning constraints in conservation areas to deliver modern, functional homes. Projects range from complete renovations to new-build commissions across London.
Full Renovations
Comprehensive property transformations that improve functionality, aesthetics, and energy efficiency. Our renovations often incorporate extensions to maximise space potential while preserving original building character. We manage all aspects from initial design to final construction.
Extensions
Design and implementation of single or multi-storey extensions that optimise natural light and spatial flow. We create seamless architectural integrations that respect existing structures while meeting modern living requirements in both urban and conservation settings.
Loft Conversions
Cost-effective space solutions that convert underutilised loft areas into functional living spaces. Our designs prioritise daylight integration and energy efficiency, transforming rooftops into valuable rooms while maintaining building aesthetics.
Basements
Specialist basement developments for properties where vertical expansion isn't feasible. We create light-filled subterranean spaces that comply with conservation area regulations, offering alternative solutions for space constraints in sensitive locations.
People
Maria Demargne
Founder & Architect
Graduated from E.T.S.A.B. Barcelona (1997) and holds a Masters in Environmental Design from Cambridge. With 20+ years' experience in residential architecture, she established the practice in 2007 after working at NRAP on major projects.
Questions
What architectural services do you specialise in?
We focus on residential projects including renovations, extensions, loft conversions, and basement developments, with particular expertise in conservation area work and sustainable design solutions across London.
How do you handle conservation area projects?
Our approach combines contemporary design with sensitive adaptation to historic contexts, ensuring compliance with planning regulations while delivering modern living spaces that respect architectural heritage.
What project sizes do you typically handle?
We work on projects ranging from small-scale renovations to comprehensive property transformations, tailoring our services to both individual homeowner needs and larger commercial commissions.
How involved are you during construction?
We provide full project management including site supervision and contract administration, maintaining continuous oversight from initial concept through to final construction completion.
What sustainability features do you incorporate?
Our designs prioritise natural light optimisation, energy-efficient materials, and thermal performance improvements, creating environmentally responsible spaces that reduce long-term running costs.
