Making an Application

Three Rivers receives 84% of applications online and we recommend that you make your planning application via the Planning Portal.  Registration is easy and you can complete your application form, upload supporting documents and pay fees online.
Planning Portal

  • The benefits of applying online include:
  • Immediate delivery and acknowledgement
  • Online help function when completing applications
  • Online payment

If you prefer, you can submit your application along with supporting documents by post or in person:

Via email: 
Via post: Three Rivers House in Rickmansworth.
Payment via phone: 01923 776611


In accordance with national guidance published by the Department for Communities and Local Government, Three Rivers District Council has created a list of local requirements for the validation of planning applications.  This has been incorporated into a validation checklist which encompasses national requirements (including the application form, the correct fee, ownership certificates and other specific details) as well as local validation requirements. 

Please note a planning application cannot be processed until all the necessary supporting information and the appropriate fee is received.  

Validation Checklist (doc)

Application Forms and Fees
Required Plans (pdf)
Buying a Plan
Design and Access Guidance (pdf)
Community Infrastructure Levy (CIL)

With regard to affordable housing, if viability is an issue a Viability Assessment / Financial Appraisal must be submitted.  This viability information will be assessed by an independent financial advisor, the cost of which shall be borne by the applicant/developer.  These costs are:

9 units or less: £1500 plus VAT 
10 or more units: £2000 plus VAT
Large schemes: Fee to be negotiated on an individual basis

Supplementary Planning Documents

Please note that the relevant fee (payable to Three Rivers District Council for inward transmission) must be paid up-front at the time of validation, and must be a separate payment to the planning application fee.

Useful Documents:

Local Biodiversity Checklist (doc)
Draft Unilateral Undertaking (doc)
Draft Section 106 Agreement (doc)

Suggested Next Steps