Website Call now
Website
Call

Ideas that start with a Sketch, end with a Proposal

Sketchproposal Limited is a dynamic architectural practice established to provide comprehensive and tailored design solutions for a diverse range of building projects. Led by Jonathon Williams, a chartered member of the Royal Institute of British Architects (RIBA) with over 25 years of experience, the company is dedicated to delivering high-quality, sustainable, and innovative architectural services.

Grounded in a commitment to client satisfaction, Sketchproposal Limited prides itself on its collaborative approach, working closely with clients throughout every stage of the project lifecycle to understand their unique needs, aspirations, and budgetary constraints.

Services Offered

From initial concept sketching to the completion of detailed construction proposals, Sketchproposal Limited offers a comprehensive suite of architectural services encompassing:

  • Consultation

Our team provides expert advice on a multitude of property-related matters, including acquisition and development strategies, maintenance and repair solutions, and the sensitive conservation and restoration of historic buildings.

  • Architectural Design

We meticulously craft architectural designs that are both aesthetically pleasing and functionally efficient. Our designs prioritize the use of sustainable materials, incorporate energy-efficient strategies, and demonstrate a keen understanding of environmental considerations.

  • Planning Submissions

Navigating the complexities of the planning process can be daunting. Sketchproposal Limited expertly prepares and submits planning applications to local authorities, ensuring adherence to all relevant regulations and guidelines. This includes securing consents for projects within conservation areas and listed buildings.

  • Detailed Technical Drawings

We produce high-quality technical drawings that provide a clear and comprehensive blueprint for construction teams. These drawings adhere to industry standards and are meticulously prepared for submission to local building control departments.

  • Contract Administration

Skilled in contract management, our team ensures all parties involved in a project adhere to the terms, conditions, rights, and obligations outlined in the building contract. Our vigilance protects both clients and contractors throughout the construction process.

  • 3D Visualisations

We bring architectural designs to life through immersive 3D visualizations. Clients can experience their future space through interactive walk-throughs and fly animations that incorporate daylight analysis and geographical context, providing a clear understanding of the design's impact.

Adopting BIM Best Practices

We leverage the latest Building Information Modelling (BIM) technology, delivering projects to a Level 2 standard. Architectural design software such as Autodesk CAD and Trimble Sketchup are utilised to create detailed, collaborative, and efficient models that enhance communication and streamline the project workflow.

Architect Fees Explained

Our fees are transparent and tailored to the specific requirements of each project.

Drawing upon extensive experience and a deep understanding of industry standards, we offer competitive and value-driven architectural services. Often, clients seek competitive fees and a service that provides excellent value for their investment.

While it is tempting to pursue the lowest fees, it is crucial to remember that architectural expertise is a valuable asset. A well-designed and executed project mitigates risks, minimizes unforeseen costs, and ultimately safeguards the client's long term investment. Our services represent a responsible investment in the success of your building project.

Please note that architect fees can vary broadly depending on the project's complexity, scope, and location. They typically range from 5 to 12% of the overall project cost.

Served areas
  • Northampton, Towcester, Milton Keynes, Newport Pagnell
Business details
  • Year established: 2010
  • Employees: 1
Highlights and features
  • Client-focused sole practising architect
Associations and certifications
  • Royal Institute of British Architects
  • Architects Registration Board
  • Association of Consultant Architects
Payment methods
  • Cash
  • Checks
  • Bank transfers
Services
We provide Concept Design services that bring your project to life through clear, professionally produced illustrations communicating your vision effectively. Our initial design concepts cover extensions, renovations and new builds, tailored to your brief. We present considered layout options alongside visual sketches of both interior and exterior perspectives. Early-stage feasibility advice is included to support informed decision-making.
Measured Studies
Report
Measured studies, including dimensional checks, form the backbone of a successful architectural project. We provide accurately scaled drawings and site layout plans. We also deliver high-accuracy digital models for design and planning purposes. These outputs ensure precise coordination throughout each stage of development. We maintain consistency to support effective design and planning outcomes.
Planning Drawings & Planning Application Support
Report
We produce professional drawings and documentation required for submission to Local Planning Authorities. Our services include full planning drawing packages, householder applications, outline planning applications, permitted development advice, and Design and Access statements. We oversee the entire process from start to finish. We ensure every submission is compliant, accurate, and clearly presented.
Building Regulations
Report
We convert approved plans into detailed technical drawings suitable for construction and Building Control approval. We provide annotated technical plans, sections and detailed specifications. We ensure structural integration and coordination with engineers information. We offer support for Building Control submissions and guidance on compliance covering fire safety, insulation, drainage and structural requirements.
Architectural Consultation & Feasibility Studies
Report
We provide architectural consultation and feasibility studies for those uncertain about what may be achievable with their property. Our service delivers expert guidance before drawings are commissioned. We deliver expert guidance before drawings are commissioned. We carry out planning probability analysis alongside a detailed constraints and opportunities report. In addition, we explore massing and layout options and undertake compliance checks with local planning policy.
People
Jonathon Williams
Jonathon Williams
Architect & Director
Prior to working independently Jonathon worked for several large architectural practices based in London and the home counties. He has a broad range of design experience and an aptitude for technical detailing due to his educational background in construction studies.
Photos
Reviews (2)
Write a Review
Luci Galliford
Mar 07, 2026
Having used Jonathon on multiple projects I wouldn’t hesitate to recommend his services. His work is of the highest standard, his communication second to none and he has seen projects through to completion without my need to chase or request engagement with third parties (building control etc) Highly recommend, you would struggle to find better standards elsewhere
Broomfield Residential Care
Feb 26, 2026
Have had a pleasure of dealing with Sketchproposal for a number of years across several complex commercial projects. The personal service and attention to details from Jonathon is what keeps us returning. The combination to technical expertise and focus on client relations is excellent.