Register a new site

If you are registering a new site with us for warranty and insurance cover, please complete a Site Notification and Initial Notice (SNIN) form.

two people in site safety clothing and hard hats inspecting work done on site

Submitting a SNIN

Please submit your SNIN form as far in advance of starting work on site as possible but at the latest:

Standard, non-hazardous sites: 4 weeks before start date

Hazardous or non-traditional sites: 8 weeks before start date

If you are a  My NHBC Portal user, you can upload your SNIN directly via the ‘Company Docs’ link or you can send your completed forms to:

NHBC House, Davy Avenue, Knowlhill, Milton Keynes, Bucks, MK5 8FP.

Download SNIN form

What happens next?

Step 1 We’ll process your SNIN form and generate a site reference number

Step 2 We will ask you to complete a Product Plot Schedule about the plots you’d like to register for warranty

Step 3 We will issue you with a formal quote for Buildmark Cover

Step 4 Once you have paid for Buildmark cover, we will send you confirmation of your policy number(s)

Step 5 We will send you a link to our Conveyancer Portal, along with activation codes for each plot that you can pass on to your home buyers’ legal representative

Reg 16E: Intended commencement of work declaration

Download Proforma

7 storeys or more?

If your project is 7 storeys or above or exceeding 18 metres (whichever is reached first), or a scheme that has been deemed high risk then we class them as a Major Project, and you need to complete and submit our Major Projects Application Form.

a photo of a man wearing a headset smiling

Need Help?

If you have any questions please call our customer services team on 0344 633 1000 and ask for ‘Customer Services’ or email

Contact us