Guide

How to object to a neighbour’s planning application

The 21-day deadline, the points councils weigh, the points they ignore, and the order to write it in. UK, 2026. Not legal advice.

The short answer

Find the application on your council’s planning website, note the “comments by” date, and send a written comment that sticks to planning points: light, privacy, size and outlook, the character of the street, parking and highway safety, noise. Quote the drawing numbers. Leave out anything personal. That is the whole method; the rest of this page is the detail.

1. Find the application and the deadline

Every council in England and Wales publishes applications on its planning portal (search “[your council] planning applications”). You will usually get a letter or see a site notice with the application reference, something like 26/01234/HSE. Open it and read the drawings, the application form and the “Design and Access” or supporting statement if there is one. The page shows a deadline for comments; councils normally allow 21 days from the notice or letter. Late comments are often still read if the decision has not been made, but do not count on it.

2. Object on planning points only

Councils can only weigh “material planning considerations”. Your letter is strongest when every paragraph is one of these, backed by a fact from the drawings:

  • Loss of light or sunlight to a habitable room or garden. Say which window, which direction it faces, and how far and how high the new wall is.
  • Overlooking and loss of privacy. Which new window or balcony looks into which of your rooms or your garden, and at what distance.
  • Overbearing size and loss of outlook. Depth beyond the existing rear wall, height to the eaves and ridge, how close to the boundary.
  • Design and character of the street or a conservation area: materials, roof form, whether anything similar exists nearby.
  • Parking, access and highway safety. Lost spaces, a new drive onto a busy road, visibility.
  • Noise and disturbance from the use (a home business, a flat conversion, a late-night use), not from the building work itself.
  • Trees, wildlife and flooding where the application touches a protected tree, a hedge, a watercourse or a flood zone.

Most councils publish their own list, usually on the page for commenting on applications, and many also publish residential design guidance with specific tests (a “45-degree rule” for light, a minimum distance between facing windows). Quote the council’s own guidance back to it where it applies; that is the most persuasive sentence you can write.

3. Leave these out, or they weaken the letter

Councils say they ignore these, and a letter full of them is read less carefully:

  • Loss of a view.
  • Loss of property value.
  • Disputes with the neighbour, their motives, or how they have behaved.
  • Noise, dust and parking during the building work.
  • Boundary, covenant and right-to-light disputes: these are civil matters between you and the neighbour, not planning.
  • Anything the applicant could build anyway under permitted development rights.

4. Write it in this order

  1. Your name and address, the application reference and the site address, and the words “I object to this application”.
  2. One short line on where you are in relation to the site (next door, sharing the rear boundary, opposite).
  3. One numbered paragraph per planning point, each with a fact from the drawings (drawing number, dimension, window) and the effect on you.
  4. What you ask for: refusal, or a specific change (reduce the depth to 3 m, obscure-glaze the side window, lower the ridge).
  5. A line asking to be told of the decision and of any committee date.

Keep it to one or two pages. Be polite about the applicant; the case officer reads hundreds of these and a calm, specific letter stands out.

Example paragraph

2. Loss of light and outlook

The proposed two-storey rear extension would project approximately 6 metres beyond the existing rear wall, directly along the shared boundary with my property. My kitchen window and the first 15 metres of my garden face that boundary and receive their direct sunlight in the morning. Drawing 03 shows the extension’s eaves at roughly 3 metres above ground, which would place that window and garden in shadow for much of the morning. I ask the council to assess the effect on daylight to my habitable rooms against its own residential design guidance.

That is one of five points in our free sample letter, which is fictional and labelled as a sample. The one-page checklist of the seven points councils weigh is free by email.

5. Send it the right way

Submit through the council’s portal (the “comment on this application” button) or by email to the planning department, quoting the reference. Portal comments are published with your name and usually your address, so write it knowing the applicant will read it. Keep a copy. If neighbours share your concern, each should send their own letter in their own words; one letter with many signatures counts as one comment, and identical copied letters are weighed lightly.

6. After you send it

Most householder applications are decided by an officer within 8 weeks. If the application goes to a planning committee, many councils let objectors speak for three minutes; the committee page tells you how to register. If the application is approved, there is no third-party right of appeal, which is why the letter during the consultation period is the moment that matters.

If you would rather we wrote it

Send us the application reference and what worries you. We read the public application and drawings, and write the letter in your name, organised under the points above, with the drawing numbers quoted, back within 1 day. £49, including VAT. It is not legal advice; you read it and submit it yourself.

Sources: the Planning Practice Guidance on material considerations (gov.uk) and the comment guidance councils publish on their planning pages, read 15 October 2026. Rules and deadlines vary by council; the application page is the final word on the date.

Questions

How long do I have to object to a planning application?
Usually 21 days from the neighbour notification letter or the site notice. The application page on the council's planning portal shows the exact date for comments. Comments sent after that are sometimes still read if no decision has been made, but there is no guarantee.
What counts as a valid objection to a planning application?
Material planning considerations: loss of light or sunlight, overlooking and loss of privacy, overbearing size and loss of outlook, design and the character of the area, parking and highway safety, noise from the use, and effects on protected trees, wildlife or flooding. Loss of a view, loss of property value and disputes with the neighbour do not count.
Can I object anonymously?
Most councils publish comments with the name and address of the person who made them, and many will not accept anonymous comments. Check your council's planning page before you send.
Does an objection letter need a solicitor?
No. Anyone affected can comment, and the council weighs the planning points, not who wrote them. Our letter is written from your facts in your name and is not legal advice.

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