
Register a new site or request a guide price
For Buildmark warranty and insurance cover on your development
Register a new site or request a guide price
If you are registering a new site with us for warranty and insurance cover, please complete a Site Notification and Initial Notice (SNIN) form. If you would like a free, no obligation quote, please download and complete the guide price form.
Complete a guide price form
Download formWhen to submit your 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
Address
You can send your completed forms to the address below or if you are an NHBC Portal user, you can upload your SNIN directly via the ‘Company Docs’ link.
NHBC, NHBC House, Davy Avenue, Knowlhill, Milton Keynes,Bucks, MK5 8FP

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.
What happens next?
If you have any questions, please call us on 0344 633 1000 and ask to speak with one of our Customer Service Advisors.
The process is as follows:
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 register your plots and 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 also 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
Guide Price Request

Guide Price Request Form
Published:What happens next?
If you have any questions, please call us on 0344 633 1000 and ask to speak with one of our Customer Service Advisors.
The process is as follows:
Step 1 Send us your guide price request
Step 2 We will review the details and send you a guide price
Step 3 If you’re happy with the guide price, please complete a SNIN or, if your development is 7 storeys or higher, complete a Major Projects Application Form
Step 4 We will then contact you to explain all the steps involved in getting your plots registered and how you can provide details to your buyers’ legal representatives

Need Help?
If you have any questions please call our customer services team on 0344 633 1000 and ask for ‘Customer Services’ or email cssupport@nhbc.co.uk