What is the Party Wall Act 3 metre rule?

The Party Wall act covers excavations within 3 metres of an Adjoining Owner, if the lowest point of the excavation will be lower than the underside of the footings to the party wall (or parts of their property which are within three metres of the proposed excavation).

Therefore, if the proposed excavation will exceed the depth of any existing footings, then a Notice will need to be served, by the legal owner of the land who is instigating the building works.

In order to be valid, a ‘Three Metre’ Notice will also need to include a section drawing, showing the depth of the new excavations proposed, and its position relative to pre – existing property.

Experienced party wall Surveyors will make a reasoned assumption about the depth of the existing foundations to a property, based on its date of construction, and other factors.

In some instances, a trial pit is dug, to ascertain the existing foundations, but this may be carried out to verify design assumptions, once the party wall process is further forward.

The homebuyer's report carried out by Harding Chartered Surveyors was clear informative and timely. The level of detail was just what I needed in order to appreciate what the property needed doing and to help me with my decision to proceed with the purchase process.
Party Wall Act 3 metre rule
Sara Thomas
09:07 19 Jan 21
Really helpful, made the process easy and really efficient service even though it was over the holiday period. Would def recommend / use again
Party Wall Act 3 metre rule
Aimee Glensor
19:09 08 Jan 21
Kate is very responsive and also took time to advise me on the phone at the very beginning. Scott Ingham did our report. It was thorough and informative. Felt in safe professional hands throughout.
Party Wall Act 3 metre rule
Claudio Mascolo
18:24 30 Nov 20
Party Wall Act 3 metre rule
Carina Lau
15:50 20 Nov 20
Fast responses from Kate were much appreciated. Thanks to Jason for undertaking the inspection.
Party Wall Act 3 metre rule
Farid Malik
11:24 11 Nov 20
Party Wall Act 3 metre rule
John Simmons
15:53 29 Oct 20
Scott completed a survey for me on a flat purchase and both he and Kate were great - very quick to respond, knowledgeable, thorough and happy to address any additional questions I had. Would definitely recommend and use them again.
Party Wall Act 3 metre rule
Martina Glaser
17:56 28 Oct 20
David Toogood produced a very thorough survey, and was extremely helpful and friendly in giving us balanced and clear advice. His in-depth report was detailed and painstaking, with lots of illustrative photos. the survey was a not inconsiderable expense, but one that we feel is fully justified by the quality of work produced.Recommended!
Party Wall Act 3 metre rule
15:12 17 Oct 20
I requested Harding to provide a valuation for a lease extension. Albert Wellington was in charge of my property and he was extremely professional and helpful in addressing all my concerns. I would recommend him and the company with no hesitation.
Party Wall Act 3 metre rule
Bene Walters
10:47 05 Oct 20
I was very impressed with how quickly Harding's got my survey booked in a and the surveyor was very responsive to the questions I had following the report. Very professional.
Party Wall Act 3 metre rule
16:16 26 Sep 20
Quick, friendly and diligent.
Party Wall Act 3 metre rule
Jergan Callebaut
11:10 26 Sep 20
A very efficient, timely and thorough service for us, as we go through the house buying process. I'd definitely use them again.
Party Wall Act 3 metre rule
Claire Brown
14:17 19 Aug 20
Very satisfied with service. Report was delivered promptly and provided the information we needed.
Party Wall Act 3 metre rule
Nicholas R.
10:05 23 Jul 20
Very impressive. I was struggling to book a survey quickly as most Surveyors time frames were three weeks. Kate was very helpful and booked in a survey on the following day. What was more impressive was the report was ready the next day. Highly recommend.
Party Wall Act 3 metre rule
Nathan Stewart
08:02 22 Jun 20
Excellent service; professional, helpful, communicative and courteous as well as relatively quick. I would highly recommend.
Party Wall Act 3 metre rule
Richard Denison Gay
14:49 02 Jun 20
Harding Chartered Surveyors were recommended to me as I needed a property valuation to be completed. They kept me up-to-date throughout the process, were professional and a pleasure to deal with.
Party Wall Act 3 metre rule
nicola handley
20:58 11 Feb 20
Very efficient and professional. I had my survey few months ago before buying my house and I am still following the advice from the survey to fix and repair what needed. I dealt with Scott Ingham and I think he worked very accurately and checked everything very carefully. Highly recommended.
Party Wall Act 3 metre rule
Marianna Ciampa
14:25 30 Jan 20
Needed a valuation for a property purchase and can honestly say the service was 1st class from start to finish. Queries were dealt with promptly and followed up via telephone to make sure I was happy with the responses.The team are extremely knowledgeable.Thank you Kate, Albert, David and the rest of the team I will definitely use the company again.
Party Wall Act 3 metre rule
Amel Ahmed
16:15 13 Nov 19
Harding's were great - very responsive, gave a very clear and detailed report and were happy to run through their comments with me over the phone.
Party Wall Act 3 metre rule
Millie Jones
16:07 30 Oct 19
Brilliant thorough service!
Party Wall Act 3 metre rule
Emma Goldschmidt
16:21 01 Oct 19
Party Wall Act 3 metre rule
Jennifer Smith
11:12 30 Aug 19
Dealt with James Brook, very efficient and professional, James had the report sent out to us within 24hrs. would highly recommend.
Party Wall Act 3 metre rule
Harry Coaker
09:46 22 Aug 19
Party Wall Act 3 metre rule
Karen Royal
21:33 14 Aug 19
Harding Chartered Surveyors are a very professional business who handled a challenging task for us with ease. I highly recommend them and will be using their services again.
Party Wall Act 3 metre rule
David Good
10:34 20 Jul 19
Very efficient service and very detailed report. We are very satisfied.
Party Wall Act 3 metre rule
Karen Ng
22:30 01 Jul 19
Really quick turn around and professional service.
Party Wall Act 3 metre rule
Lily Kwong
10:38 24 Jun 19
Party Wall Act 3 metre rule
Sue Hodgkins
16:42 20 Jun 19
Have used for years and always been very happy. Competitive on service and always good on deadlines and quality. Recommended.
Party Wall Act 3 metre rule
Neill Ghosh
14:22 11 Jun 19
Party Wall Act 3 metre rule
tom binks
17:56 09 Apr 19
The surveyor turned up on time as planned to survey the roof, both inside and out, then was happy to discuss it all with us afterwards. Bit tricky in high winds. Report arrived 2 days later, just what we needed. Professional and thorough. Recommended.
Party Wall Act 3 metre rule
Kevin Loughlin
20:27 28 Mar 19
Quick, responsive and very thorough. Would definitely recommend Hardings to others, and will come back to them the next time I need a survey completed.
Party Wall Act 3 metre rule
Jon Brennan
09:44 01 Mar 19
Quick, efficient and excellent service. Came as a recommendation from a friend and we’d happily recommend too.
Party Wall Act 3 metre rule
Abi and Andy La Fontaine
20:57 20 Feb 19
Party Wall Act 3 metre rule
Bradley Roth
01:56 16 Feb 19
Thorough and professional surveyors. Very happy with their service. Highly recommended.
Party Wall Act 3 metre rule
Giulio Pepe
16:25 16 Dec 18
Party Wall Act 3 metre rule
Margaret Rowley
16:09 03 Dec 18
Good, thorough, and promptly scheduled homebuyer survey in Fulham. The surveyor called me and explained everything clearly.
Party Wall Act 3 metre rule
Simon Wilson
15:54 10 Nov 18
I highly recommend David. Very good technical knowledge. He was always available for our questions, which included a detailed call on the same day as the survey. The written survey report was clear, detailed and included pictures and estimates of the cost of repairs.
Party Wall Act 3 metre rule
Daniel Vernazza
10:41 29 Apr 18
David gave us a fantastic service and has been a huge help during our property purchase process. We have had 2 surveys carried out, both of which were arranged very promptly. Thorough and extremely useful telephone calls and full written reports were received shortly afterwards. David's reports and advice have been invaluable to us.
Party Wall Act 3 metre rule
James Palairet
11:16 09 Jan 18
I have worked with David and his team as a buying agent for many years now. The service they offer is an excellent one, timely with a commonsensical approach. I would recommend them to anyone.
Party Wall Act 3 metre rule
Sarah Dixon
14:13 08 Jan 18
James provided a very professional and thorough service, highly recommended.
Party Wall Act 3 metre rule
William Sharples
08:57 05 Oct 17
Very experienced firm and friendly staff. Highly recommended.
Party Wall Act 3 metre rule
Elif Erdine
14:30 04 Oct 17
Party Wall Act 3 metre rule

At Harding Chartered Surveyors, we’re a team of independent and impartial RICS surveyors that can carry out party wall matters. If you have any questions or need advice don’t hesitate to call us on 020 3598 6730.

Party Wall Act 3 metre rule
Why us?

  • Independent firm of RICS Chartered Surveyors

    Established in 1997, Harding Chartered Surveyors have helped thousands of families, individuals and businesses with their property needs for over two decades.

  • Expert Property Advice

    The Harding’s team consists of RICS Chartered Surveyors and registered valuers with expertise in Building Surveys, Valuation, Leasehold Reform, Party Wall matters, Taxation valuation, and Expert witness.

  • In-depth Reports & Recommendation

    Comprehensive reports featuring written reports, photographs and quotes for any required works. Our Chartered Surveyors use advanced equipment, such as Pole Cams, to inspect every accessible nook and cranny of the property.

  • Excellent Customer Service

    Harding’s is proudly independent and has no links or ties with any banks or building societies, allowing us to focus directly upon the client and their requirements.