Planning & Feasibility Package
Know what you can build — before you spend thousands.
At SY Design Studio, we provide professional planning feasibility services to help homeowners, developers, and investors understand what can be built on a site before committing to full architectural drawings or construction costs. Our fixed-fee planning advice covers Permitted Development rights, planning policy constraints, and development potential, helping you avoid refusals, delays, and unnecessary expense.
Clear advice. Fixed fees. Confident decisions.
Before committing to drawings, builders, or a property purchase, our Planning & Feasibility Packages give you straight, professional advice on what’s possible, what’s risky, and what route gives you the best chance of approval.
We strip away the jargon and give you clear answers — saving you time, money, and stress.
Why start with a planning & feasibility check?
Planning rules in the UK can be complex, site-specific, and full of hidden constraints. Many homeowners and developers only discover problems after paying for drawings or submitting an application.
Our planning-led approach helps you:
-Avoid costly redesigns ❌
-Understand Permitted Development vs Planning Permission ✔️
-Reduce refusal risk 📉
-Make informed decisions from day one 🧠
Based in West London, we regularly advise clients across Hounslow, Ealing, Hillingdon, Richmond, Brent and surrounding areas. Our in-depth knowledge of local planning policies and council requirements allows us to provide clear, honest guidance tailored to each site.
Our Planning & Feasibility Services
Planning Feasibility Check
Fast, affordable advice before you commit
If you’re thinking about an extension, loft conversion, or property purchase, this is the perfect starting point.
What we do:
-Review planning history and site constraints
-Check local and London Plan policies
-Assess Permitted Development rights
-Identify risks, red flags, and opportunities
-Advise the best route forward
Best for:
Homeowners, first-time developers, and buyers wanting clarity before spending money.
Permitted Development (PD) Report
Know if your project qualifies — in writing
Permitted Development sounds simple, but small mistakes can invalidate it. Our PD Report gives you a clear, written assessment of what is and isn’t allowed.
What’s included:
-Full PD compliance check
-Clear explanation of size, height & volume limits
-Identification of anything that breaks PD rules
-Advice on Lawful Development Certificates (LDC)
Best for:
Rear extensions, loft conversions, side extensions, and outbuildings.
Development Feasibility Pack
Smart planning strategy for developers & investors
Thinking about converting, extending, or redeveloping a site? This package focuses on maximising value while managing planning risk.
What’s included:
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Site & planning policy appraisal
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Development potential review
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Unit yield and layout options
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Planning risk rating (Low / Medium / High)
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Clear strategy on how to proceed
Best for:
Developers, landlords, investors, and property professionals.
Our Concept Design & Planning Packages
Our comprehensive and affordable design packages include everything you need to get your building project started, from early concept design through to planning submission.
What’s Included:
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A dedicated architectural design team
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Optional measured survey site visit (additional fee applies)
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Full planning permission advice and assessment against local and national policies
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Screen-sharing session and/or video call (optional)
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All drawings required for the planning application
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Unlimited design revisions
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Optional 3D model showing existing and proposed designs
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Initial feasibility review by an experienced team
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OS map licence (valid for 1 year)
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Planning permission drawings prepared within 2–3 weeks
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Submission of either a full planning application or a Certificate of Lawful Development
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We act as your agent throughout the application, liaising with the council on your behalf
(Local authority planning fees are not included)
Our packages are suitable for house extensions, loft conversions, renovations, and self-build projects.
Let SY Design Studio Plan and Design Your Next Project
Get in touch today to discuss your project and request a free initial consultation and quotation.
What’s Next?
Once planning permission or a Certificate of Lawful Development is secured, your project is ready to move to the next stage.
We can continue to support you with building regulations drawings, structural calculations, and ongoing design input throughout construction. Our team remains available to provide planning and design advice, helping ensure your project runs smoothly through to completion.
Spotlight On: House Extensions
Depending on the size, design, and materials used, a house extension may fall under permitted development or require full planning permission.
Our team can advise on the best route for your project and prepare the drawings needed to move forward with confidence.
Our other services
Your building control application is supported by a detailed set of building regulation drawings and technical construction details. These drawings demonstrate compliance with current Building Regulations and provide clear information for building control approval and construction.
Building Regulation Drawings
Our 3D realistic renders bring your project to life before construction begins. They provide a clear, accurate visual of the proposed design, helping you understand the layout, materials, and overall appearance while supporting design decisions and planning discussions.
3D Realistic Renders
