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18 Years
experience
Expert Architectural Services in London
Established in 2008 by chartered CIAT architect Paul Cramphorn, our practice specialises in transforming residential and commercial spaces through expert architectural design and planning consultancy. We provide end-to-end solutions for property owners and developers across London and Hertfordshire, with a proven track record of securing planning approvals for over 2,000 projects. Our team combines technical expertise with creative design to deliver spaces that balance aesthetic appeal with functional requirements. We maintain strong relationships with local authorities and offer comprehensive support from initial concept to building regulations compliance. Our four-step process ensures clients receive tailored designs, expert handling of planning documentation, and access to trusted contractors. With a 97.5% success rate in planning applications and 100% building regulations approval, we prioritise transparency and client involvement throughout every project.

Our multidisciplinary team includes chartered architectural technologists and ARB-registered architects with combined experience spanning decades. We serve both residential and commercial clients, offering feasibility studies, permitted development certificates, and technical drawing services. Our commitment to quality design for all budgets has earned us recognition from industry peers and consistent positive feedback from clients. As a CIAT Chartered Registered Practice, we uphold the highest professional standards while maintaining competitive pricing compared to traditional architectural firms.
Services
Loft Conversions House Extensions Garage Conversions Basement Conversions New Build Dwellings Flat Conversions Planning Permission Feasibility Studies Building Regulations Permitted Development
Details
  • Year established: 2008
Highlights and features
  • Chartered CIAT and ARB-registered professionals with 15+ years' experience
  • 97.5% success rate in planning applications across all London boroughs
  • Comprehensive four-step process from design to approved planning permission
  • Free initial consultations and office consultations for viable projects
  • Proven track record with 2,000+ completed projects since 2008
Associations and certifications
  • Chartered Institute of Architectural Technologists (CIAT)
  • Architects Registration Board (ARB)
What people say
Excellent service Highly recommend Very thorough Efficient completion Expertly advised
Services
Loft Conversions
We specialise in converting loft spaces into functional living areas while ensuring compliance with building regulations. Our team handles all aspects from initial design to planning permission and technical drawings. Clients benefit from maximised space utilisation and increased property value through our expert conversions.
House Extensions
Our house extension services cover rear, side, and full extensions with tailored design solutions. We manage the complete process including feasibility studies, planning applications, and building regulations approval. Clients receive practical living space expansions that enhance both functionality and property aesthetics.
Planning Permission
We provide expert guidance for securing planning permission across all London boroughs. Our services include risk assessment, planning arguments, and council negotiations. With a 97.5% success rate, we ensure applications meet local policies and have the strongest chance of approval.
Building Regulations
Our detailed technical drawings ensure full compliance with building regulations standards. We prepare comprehensive documentation covering structural details, insulation, and safety requirements. Clients benefit from our 100% approval rate in regulatory submissions and reduced construction risks.
Feasibility Studies
We conduct thorough feasibility studies to evaluate potential property development opportunities. Our reports identify constraints, planning likelihood, and budget requirements. Clients receive informed recommendations to ensure viable projects before committing to full design work.
People
Paul Cramphorn
Director/Founder/Chartered Architectural Technologist
Founder of Detailed Planning with over 10 years' experience in architectural technology. Holds a BSc (Hons) and is a chartered member of CIAT. Specialises in extensions, new builds, and conversions. Combines technical expertise with creative design solutions.
Emily Buckingham
Chartered Architectural Technologist/Accounts Manager
Senior designer with BA (Hons) and CIAT membership. Oversees design process from concept to completion. Combines architectural expertise with financial management skills to deliver cost-effective solutions for clients.
Chris Watkins
Architectural Technologist/Designer
Chartered architectural technologist with BSc (Hons) from University of Derby. Specialises in technical design aspects and detail-oriented solutions. Maintains up-to-date knowledge of industry developments to ensure modern, compliant designs.
Filippo Rossi
ARB Registered Architect
Experienced architect registered with the Architects Registration Board. Trained in Italy with expertise in technical design and project management. Known for delivering high-quality results through attention to detail and creative problem-solving.
Daniel Cieslak
Architectural Technologist/Designer
Graduate from Edinburgh Napier University with practical experience across diverse projects. Focuses on how architectural changes positively impact clients' lives. Applies technical knowledge to create functional, aesthetically pleasing spaces.
Questions
What architectural services do you offer in London?
We provide comprehensive architectural services including loft conversions, house extensions, planning permission applications, building regulations compliance, feasibility studies, and permitted development certificates across all London boroughs.
How can you help with planning permission in London?
Our expert team handles all aspects of London planning applications, including risk assessment, council negotiations, and documentation preparation. We have a 97.5% success rate in securing approvals across various property types.
Do you work with residential and commercial clients?
Yes, we serve both residential and commercial clients. Our services cover residential projects like basement conversions and commercial work including shop front alterations and change of use applications.
What areas do you cover?
We operate across all London boroughs including North London, East London, South London, and West London, plus Hertfordshire areas such as St Albans, Hatfield, and Harpenden.
Can you help with building regulations compliance?
Yes, we prepare detailed technical drawings meeting all building regulations requirements. Our team ensures 100% approval rate for regulatory submissions while minimising construction risks and delays.
What is your planning application success rate?
We maintain a 97.5% success rate for planning applications and 100% approval for building regulations submissions, reflecting our expertise in meeting council requirements and addressing potential issues proactively.