Solent Disturbance Mitigation Project (SDMP)

All applications for planning permission or prior approval for new residential development across the city received after Monday 7 July 2014 need to provide a means of mitigating the development's impact upon the ecological importance of the Special Protection Areas within and around the Solent. Map of the Solent Disturbance Mitigation Project around the Solent

Whilst applicants may propose alternative measures to mitigate the direct impact of their development on the Solent SPA, the simplest way of mitigating will be through the Solent Disturbance Mitigation Project.

This requires applicants to either:

  • make a financial contribution of £176/dwelling either before planning permission is granted or by completing the SDMP Agreement and sending the completed form along with mitigation contribution to the Planning Agreements Officer at the Local Planning Authority.

    or

  • by completing the Unilateral Undertaking before planning permission is granted with an undertaking that the payment of £176/dwelling will be made before the development is implemented. Please note that on submission of the Unilateral Undertaking, to the Planning Agreements Officer at the Local Planning Authority, a £75 fee/cheque will also need to be submitted to cover checking fees by the council's legal team.

To apply for mitigation, please choose one of the following options:

SDMP Agreement Fill in the Habitats Mitigation Contribution Agreement and submit to the Local Planning Authority, along with the SDMP Mitigation Contribution of £176 per residential unit. 

Unilateral Undertaking Fill in and submit the council's standard Unilateral Undertaking with the planning application, along with the £75 checking fee.

For either option please submit the necessary information to the Planning Agreements Officer early enough to ensure the application process isn't delayed or refused.

Further information on the calculation/setting of the £176 is available from the Appendix to the Interim Mitigation Framework.

Further details of how the contributions will be collected and spent are set out in the attached documents and further information regarding the SDMP can be found on the Portsmouth Solent Disturbance and Mitigation Project site. If your enquiry relates to a specific application case please contact the planning case officer, or phone the duty planning officer on 023 8083 2603.

Background information

Policy CS22 of the council’s Local Development Framework Core Strategy suggests that the additional growth in the city, in combination with growth in neighbouring areas, could lead to adverse effects on European sites of nature and biodiversity value if appropriate management and mitigation, as required by the Conservation of Habitats and Species Regulations (2010), is not provided.
All applications for planning permission or prior approval for new residential development across the city received after Monday 7 July 2014 will need to provide a means of mitigating the development’s impact upon the ecological importance of the Special Protection Areas within and around the Solent. Failure to do so will result in the planning application being refused as contrary to Policy CS22 and the Conservation of Habitats and Species Regulations (2010).

To assist applicants meet their obligations the Partnership for Urban South Hampshire (PUSH), which includes Southampton City Council, has adopted the Solent Disturbance Mitigation Project (SDMP). The Solent Disturbance Mitigation Project now provides evidence to Natural England and local planning authorities that new development within 5.6km of the Solent coastline may have an adverse effect on internationally protected birds. The Solent Disturbance Mitigation Project is explained further in the PUSH report May 2014.

At the PUSH meeting on 25 March 2014 the affected council’s agreed to implement the SDMP through the planning applications process.

SCC Cabinet approved the project on 19 August 2014. Cabinet's report on Solent Disturbance and Mitigation Project.