Services for developers
and housebuilders

Whether you’re planning a small extension to your property or a large scale development we’re here to help.

Northern Ireland Water recognises the importance of supporting development and regeneration and confirms its commitment to delivery of services for householders and developers. We recognise the importance of working closely with you as the developer to provide workable solutions to your water and wastewater needs.

Who are Developer Services?

Developer Services are responsible for the provision of services associated with all aspects of development and housebuilding including first time service appraisal, diversions of watermains and sewers, watermains in new development, adoption of sewerage systems in new developments and dealing with watermain and sewer requisitions.

How to Contact Us

Development related queries should be emailed to developerservices[AT]niwater[DOT]com or posted to NI Water, Developer Services, Ballykeel Office, 188 Larne Road, Ballymena, BT42 3HA.

If you require further assistance please contact Servicing Team via 03457 440088 (Mon-Fri, 09:00 to 16:30, excluding Public / Bank holidays)

*Latest News* 

Record Request Applications – Temporary Suspension of some Services November 2021 

Northern Ireland Water has 10 working days to process applications for record request maps and applications are strictly processed in the order in which we receive them.

Due to unprecedented demands on this service, we have taken the decision to temporally suspend the following services:

  • Same day requests;
  • Next day requests &
  • 48 hour requests.

Applicants are requested to ensure that they submit their applications as early as possible to allow us sufficient time to process them and to ensure that application forms are current, properly completed, a site location map is provided and the correct fee submitted with the application.

Available services can be located at

  • Record Requests (A4) £16.00 +VAT = £19.20
  • Record Requests (A3) £18.00 +VAT = £21.60
  • Record Requests (A0/A1) £30.00 + VAT = £36.00
  • Additional printed copies £4.50 +VAT = £5.40

We anticipate normal service will resume on 1 February 2022 and we apologise for any inconvenience caused.

Revised PDE Form & Guidance Notes 

We have a revised Pre Development Enquiry (PDE) application (from 1st April 2021); this needs to be submitted as soon as is practicable and prior to any formal planning submission. The PDE Response will be valid for a period of 18 months. 

‘New’ Impact Assessments Forms (Water and Wastewater) 

Water Impact Assessment Form (Form Reference: W-IA). 

Wastewater Impact Assessment Form (Form Reference: WW-IA) 

Impact assessments are a new process being introduced to replace the current network capacity check process. The Impact Assessment applications are referral applications following the (PDE) Process. 

When you get your PDE response NI Water will advise if you need to move to undertake an impact assessment.

The Impact Assessment service is to assist developers in identifying any possible constraints that may be associated with servicing a development site in terms of water and/or wastewater infrastructure. The Impact Assessment can assist developers in understanding the potential costs and timescales involved in servicing a site prior to land acquisition or in advance of the submission of a planning application. Please refer to their respective Guidance Notes.

‘New’ Build Over Sewer Record Request and Retrospective Build Over Sewer Application 

Build Over Sewer Record Request (Form Reference: BO-RR).

Where you have a property built over a sewer and need to determine if a build over exists you will need to complete this application

 Our Build Over Agreement records will be examined to determine if there is any record of a previous build over agreement within the area identified.

Retrospective Build Over Sewer Application.  (Form Reference: RBO-AP) 

If no prior build over agreement can be found the next step in the process is completion of the ‘Retrospective Build Over Application Form’ for an extension which has been built over a sewer without prior consent from NI Water.

Query Procedure 

Northern Ireland Water are committed to delivering our services to you at a high standard, however if we do not meet the standard you expect, we would like to know.

We will look into the situation and try to put things right as quickly as possible. By telling us about your experience, you are helping us to make process improvements which will ensure better customer experience for the future. Please see below how to contact us if you have a query.

Your views are important to us and we encourage customers to get in touch. In this section you will find information on how to get help.

If you require clarification on any of our services or a submitted application, please contact the Technical Assessor (if known) by telephone on 03457440088 or email: Developerservices[AT]niwater[DOT]com

If your query is still not resolved or you are unable to reach the relevant member of staff, please email our Customer Engagement Team at Customerengagementleads[AT]niwater[DOT]com.  One of our CEL’s will contact you with the aim to provide a resolution to your query.


This section contains information needed to help you apply for a pre-development enquiry, development encroachment –odour assessment and records requests. You will also find guidance on the submission of digital format drawings of proposed site layouts.

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general panel


Whether you want to install a new water connection or are planning to build near a watermain, we can help you every step of the way. Our forms contain all the information needed to obtain a water supply to a property or development. Each type of activity contains the application form and guidance notes.

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services for devlopers


This contains all the information needed to obtain a consent to build over a public sewer, to connect to a public sewer, requisition a public sewer or divert a public sewer for your property or development.

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services for developers

Our charges and fees

Details of all the relevant fees relating to the applications for Development Services. Our charges for pre development enquiries, water connections, sewerage (wastewater) connections, and infrastructure changes can be found here.

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Services for developers

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