A Step-by-Step Guide to Planning a Building Project in Cornwall

Everything You Need to Know About Planning, Permissions, and Construction in Cornwall 👍

Planning a building project in Cornwall—whether it’s a home extension, renovation, or a new build—can be an exciting yet complex process. From securing planning permission to ensuring compliance with local building regulations, each step requires careful thought and expertise.

Cornwall’s unique landscape, rich architectural heritage, and Areas of Outstanding Natural Beauty (AONB) mean that planning approvals can sometimes be challenging. However, with the right approach and professional support, your project can run smoothly from start to finish.

In this guide, we’ll break down the key steps to planning a successful building project in Cornwall, including practical insights, regulatory advice, and tips on avoiding common pitfalls.

🛠️ Step 1: Define Your Project Goals and Budget ✅

The first step is to establish a clear vision for your project and determine how much you are willing to invest. Key considerations include:

• Project Scope – Are you planning an extension, loft conversion, new build, or full renovation?
• Purpose – Are you building for personal use, resale, or rental investment?
• Budgeting Smartly – Factor in planning fees, architectural design, materials, labour costs, and a contingency fund (typically 10-20% of your budget for unexpected expenses).
• Sustainability Goals – Cornwall has a strong focus on eco-friendly building. Are you incorporating solar panels, heat pumps, or sustainable materials?

💡 Tip: Trevaskis Design Solutions LTD can help you establish a realistic budget and ensure your vision aligns with both your needs and planning regulations.

🛠️ Step 2: Work with a Professional for Feasibility and Design ✅

Once your goals are clear, the next step is to determine whether your project is feasible, practical, and compliant with local regulations.

At Trevaskis Design Solutions LTD, we provide:

• Concept Design & Feasibility Studies – We assess whether your ideas are viable and achievable within your budget.
• Measured Building Surveys – Essential for extensions and renovations, we create accurate digital plans of your existing property.
• Planning Consultancy – We guide you through the planning permission process, increasing your chances of approval.

💡 Did you know? Cornwall has a high percentage of listed buildings and conservation areas, meaning additional restrictions may apply. A professional can help navigate these complexities.

🛠️ Step 3: Understand Planning Permission and Building Regulations ✅

Many projects require planning permission, but certain permitted development rights allow smaller alterations without approval. Understanding the difference is crucial.

🔹 Projects that usually require planning permission:

• New builds or significant structural changes
• Extensions beyond certain size limits
• Building in conservation areas or AONB
• Converting barns or outbuildings into homes

🔹 Projects that may fall under permitted development (no planning permission required):

• Small rear extensions (within size limits)
• Certain loft conversions
• Garage conversions

🔹 Building Regulations – Even if planning permission isn’t needed, your project must comply with UK Building Regulations, covering structural safety, fire protection, energy efficiency, and accessibility.

💡 Tip: You can check whether your project needs planning permission by visiting Cornwall Council’s Planning Portal.

🛠️ Step 4: Submit Planning Applications and Secure Approvals ✅

If your project requires planning permission, you’ll need to submit a planning application to the local authority. This process includes:

1. Creating Detailed Drawings – These must meet council requirements and show how your project fits within its surroundings.
2. Submitting a Design & Access Statement – Explaining how your design considers the local area and its impact.
3. Consultation Period (8-13 weeks) – The council will review the application and may seek input from neighbours or planning officers.

💡 Avoid Delays! Many applications are rejected due to incorrect or incomplete documentation. Trevaskis Design Solutions LTD ensures your submission is accurate and fully compliant, improving approval chances.

🛠️ Step 5: Hire the Right Contractors and Source Materials ✅

With planning approval secured, the focus shifts to construction. Choosing the right builders, suppliers, and materials is key to avoiding delays and budget overruns.

🔹 Finding Reliable Contractors:

• Look for well-reviewed, accredited builders.
• Ask for previous project examples and references.
• Ensure they have insurance and warranties in place.

🔹 Choosing the Right Materials:

• Weather-resistant materials are vital for Cornwall’s coastal climate.
• Sustainable options (e.g., reclaimed timber, natural stone) are increasingly favoured.
• Energy-efficient choices help reduce long-term running costs.

💡 Tip: Trevaskis Design Solutions LTD can recommend trusted builders and suppliers to ensure high-quality construction.

🛠️ Step 6: Oversee Construction and Stay on Track ✅

Once work begins, regular monitoring and communication help prevent problems. Key considerations include:

• Regular Site Inspections – Check progress and quality.
• Managing Unexpected Challenges – Weather delays, material shortages, or changes to plans.
• Ensuring Safety & Compliance – Your project must meet all health and safety regulations.

💡 Avoid Stress! Our team can project manage the entire process, ensuring smooth progress and handling any challenges that arise.

🛠️ Step 7: Final Inspections, Snagging, and Completion ✅

As your project nears completion, final checks ensure everything meets expectations. This includes:

• Snagging Inspections – Identifying any defects or minor fixes needed.
• Final Building Control Approval – Your local authority must sign off on compliance.
• Warranty & Guarantee Documents – Ensuring materials and workmanship are covered.

💡 Did you know? Many builders offer a 12-month defect liability period, meaning they will fix minor issues post-completion.

🛠️ Make the Process Easy with Trevaskis Design Solutions LTD ✅

Planning a building project in Cornwall doesn’t have to be stressful. With the right expertise and careful planning, you can achieve a seamless, compliant, and high-quality build.

At Trevaskis Design Solutions LTD, we take care of everything from design and planning to approvals and contractor recommendations. Our expertise ensures your project is efficient, cost-effective, and fully compliant with Cornwall’s regulations.

📞 Contact us today for expert advice on planning your building project:
🔹 Phone: 07585 709 807
🔹 Email: rob@tdesignsolutions.co.uk

Let’s bring your vision to life—without the stress!