Mark Downey - Architectural Designer


Specialising in residential transformations across East Sussex and the South East. I help homeowners and developers turn ambitious ideas into build-ready realities, navigating the complexities of Planning Permission and Building Regulations so you don’t have to.

07731149049 | [email protected]


How can I help?

Unlocking the full potential of your property. Whether you’re looking to extend your current home, renovate an existing space, or embark on a new-build project, I provide the architectural expertise to turn your vision into a build-ready reality.From home extensions and loft conversions to garage conversions, internal remodels, garden rooms, replacement dwellings, and new build homes, I support projects of all scales. Whether your plans require full planning permission or fall under permitted development, I provide the expertise and drawings needed to turn an idea into a clear, buildable plan. I also assist with many other types of residential projects, so if you’re unsure where to start, feel free to Get in touch to discuss your ideas.Bespoke Residential Design:
Creative spatial planning for extensions, loft conversions, and internal renovations tailored to your lifestyle.
Planning & Permitted Development:
Expert navigation of the planning system to secure approvals and maximize your property's potential.
Building Regulations:
High-precision technical drawing packages to ensure full compliance and smooth Building Control approval.
Detailed Contractor Packs:
Comprehensive specifications that allow builders to provide accurate quotes and build with confidence.
End-to-End Guidance:
Clear, professional advice to help you navigate the complexities of UK construction without the stress.
I believe the design process should be simple and smooth. To save you the headache of project management, I act as your central point of contact—coordinating seamlessly with third-party professionals, such as structural engineers and surveyors, to ensure every technical detail is aligned before your build begins.

Unsure which permissions or designs you need?
Get in touch and I’ll guide you through the process, from initial ideas to the best next steps.


Ready to discuss your project?

From the first spark of an idea to the technical details of planning and building regulations, I’m here to guide you through every step. I offer a free initial consultation tailored entirely to your schedule. Whether you’d prefer to meet at your property or chat via phone or video call, we can discuss your vision and determine the best path forward for your project.