A Step-by-Step Guide for Homeowners
If you’re planning an extension, loft conversion, or major renovation in Hertfordshire, chances are you’ll need planning permission. But the application process can be confusing, especially if it’s your first time. This guide walks you through how to apply for planning permission in Hertfordshire, from checking requirements to submitting your application and dealing with objections.
According to Planning Portal, over 400,000 planning applications are submitted in the UK each year. Knowing the steps early can save you time, money, and frustration later.
What Is Planning Permission?
Planning permission is formal approval from your local authority to build or make changes to a property. It’s designed to ensure developments are safe, sustainable, and in keeping with local character and regulations.
Not all works need full planning permission, some fall under permitted development rights. We’ll cover that in another blog, but for now, let’s assume your project does need consent.
Step 1: Check If You Need Planning Permission
Before you do anything else, visit the Planning Portal and use the interactive guides to check whether your project requires permission.
Common works that usually need planning approval include:
- Major extensions or loft conversions
- Flat conversions or change of use (e.g. from residential to business)
- Building a new home on a separate plot
- Adding dormers or altering the roof shape significantly
- Properties in conservation areas or listed buildings
Hertfordshire councils may also have local rules that override national guidelines, so it’s worth checking with your specific borough (e.g. St Albans District Council, Hertsmere, or Watford Borough Council).
Step 2: Speak to a Surveyor or Planning Consultant
While not mandatory, it’s wise to get advice from a RICS-accredited surveyor or a planning consultant before applying. They can:
- Advise whether permission is needed
- Highlight risks or likely objections
- Recommend design tweaks to improve approval chances
- Help prepare supporting documentation
Lloyd Dixon Group is an experienced team of property surveyors in London, St Albans, Hertfordshire and Mayfair. To get a quote or speak to us, please call 075 95 534 101.
Step 3: Prepare Your Application
Your application must include:
- Completed forms (via the Planning Portal)
- Scaled drawings of your existing and proposed plans
- Location and site plans
- Design and access statement (for larger or sensitive projects)
- Application fee (use the fee calculator here)
Your architect or surveyor can usually prepare the technical drawings for you.
Step 4: Submit to the Local Planning Authority
Most Hertfordshire councils accept applications through the Planning Portal, which forwards your submission to your local authority. You’ll receive a confirmation email and a reference number for tracking.
Once validated, the council begins a formal consultation process.
Step 5: Public Consultation and Objections
The council will notify neighbours and post notices near the site. There’s a 21-day window for comments or objections.
Common reasons for refusal include:
- Privacy or overlooking concerns
- Design out of keeping with the area
- Obstruction of light or views
- Conflicts with conservation rules or planning policies
Your planning officer will consider all responses before making a decision.
Step 6: Wait for a Decision
Planning officers aim to decide within:
- 8 weeks for smaller projects
- 13 weeks for larger or complex developments
They may approve your plans, approve with conditions, or refuse permission. If refused, you can amend and resubmit or appeal to the Planning Inspectorate.
Step 7: Begin Your Build (If Approved)
Once approved, you’ll receive a formal decision notice. You typically have 3 years to start work.
Don’t forget:
- You may also need Building Regulations approval
- Start dates must be within the approval period
- Keep your neighbours informed to minimise disruption
Lloyd Dixon Group can assist with project monitoring, contract administration and compliance throughout the build.
Do You Need Help With Surveys or Drawings?
At Lloyd Dixon Group, we help clients through the planning journey — from measured surveys and drawings to contract administration and defect diagnosis. Whether you’re improving your home or managing a larger development, we’re here to guide you.
To get a quote or speak to us, call 075 95 534 101 or visit our contact page.
See More:
What Defects Do Building Surveys Usually Reveal? (and Why You Should Care)
What Is Project Monitoring in Property Development and Why Does It Matter?
What Are Dilapidations and What Do They Mean for Landlords and Tenants?