Our Accreditations

Our accreditations, affiliations and awards.

Planning requires strict adherence to accreditations and affiliations. These certifications not only reassure clients but prove our credentials and robust quality assurance policies. Below, you’ll find our accreditations and affiliations, including the universally respected ISO 9001:2015.

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Royal Town Planning Institute

The leading membership organisation and a Chartered Institute responsible for maintaining professional standards and accrediting world class planning courses nationally and internationally.

DHA are extremely proud to have been awarded Planning Team of the Year 2021 by RTPI South East. The judges noted that "DHA have imaginative multi-disciplinary approaches and a diverse range of projects, and that feed back from clients on some major schemes was very positive about the role that DHA had performed, going above and beyond".

DHA were also finalists for the National RTPI Awards 2022.

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ISO 14001 Accredited

We are ISO 14001 certified which formally acknowledges our commitment to sustainability and our drive to minimise our environmental footprint

Royal Institution of Chartered Surveyors

RICS is the world's leading professional body for qualifications and standards in land, property, infrastructure and construction.

The Chartered Institute of Logistics and Transport

The leading professional body for professionals who work in supply chain, logistics and transport.

Kent Invicta Chamber of Commerce

The Kent Invicta Chamber of Commerce is a membership organisation which provides a full range of business support services across Kent, ranging from networking, international trade, business support to representation.

ISO 9001 Accredited

We are ISO 9001 certified to ensure our consistent approach to providing the highest standard of service is maintained. You can find a copy of our Quality Policy here.

Institute of Environmental Management and Assessment

The global professional body for individuals and organisations working, studying or interested in the environment and sustainability.

Chartered Institution of Highways and Transportation

A learned society concerned specifically with the planning, design, construction, maintenance and operation of land-based transport systems and infrastructure.

Sussex Chamber of Commerce

Representing businesses of all sizes and sectors from across the County of Sussex and beyond, the Sussex Champer of Commerce support business growth, champion key issues and drive sustainable economic growth.

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Solar Energy UK

Solar Energy UK represents over 300+ member companies operating in the UK energy sector and beyond. We fully support the Solar Energy UK’s ambition to help secure 70GW of solar energy by 2035.

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Eclipse House, Eclipse Park, Sittingbourne Road, Maidstone, Kent ME14 3EN

Telephone: 01622 776 226 Full details

Astral Towers, Betts Way, Crawley RH10 9XA

Telephone: 01293 221320 Full details

Metal Box Factory 30 Great Guildford Street London SE1 0HS

Telephone: 020 3005 9725 Full details