About Us

GPO Designs provides Architectural Services and specialises in the preparation of House Extension Plans, Planning Permission Applications, Building Control Applications and Planning Appeals for new build houses, house extensions, loft conversions, garage conversions, outbuildings, mobile homes and annexes together with work to commercial buildings. If you are not sure what is possible or what a house extension or conversion would look like we can help by producing a realistic artists impression which shows your property or site with and without the changes. 


GPO Designs was established in 2010 by Mike and Georgina Otter. The business was started in response to a gap in the market for high quality, low cost Extension Plans, House Plans, Planning Application and Building Control Application services.


Our aim is to offer a high quality service for the best possible price. GPO Designs initially offered services only within Essex but we now cover a much wider area.  In July 2022 we started a new service serving the Frinton on Sea, Great Holland, Kirby Cross, Kirby le Soken, Walton on the Naze and Clacton on Sea areas.


During 2013 we extended our operating area for our Premium Planning Services to include the entire South East of England (including Hertfordshire, Kent, Essex, Surrey, Bedfordshire, Buckinghamshire, West Sussex, Berkshire, and Cambridgeshire) . More locally we are are also targeting our Premium Planning Application and Building Plans services to South Woodham Ferrers, Chelmsford, Danbury, Maldon, Southend, Colchester, Hornchurch, Brentwood and surrounding areas.

We are registered with the LABC Partner Authority Scheme which allows us to offer a superior building control service in partnership with the Chelmsford City Council Building Control department.

Meet the team

Photograph of Mike Otter (Company Director)

Mike Otter, MSci (Hons)

Company Director

Mike studied at the University of Durham, leaving with a Masters degree in 1998 and has worked in Engineering Project Management and Design ever since.

Following on from involvement in a series of property refurbishments and extension projects it became clear that there was a need for high quality low cost drawings and application services. Our first plans were submitted in 2010 and GPO Designs was established.


Photgraph of Georgina Otter

Georgina Otter, BA (Hons), MA (Hons)

Georgina completed a BA degree in Criminology followed by a Masters Degree at the Lancaster University Management School.  George worked for many years as a Senior Executive Officer for the UK Government handling court Appeals and providing legal advice.  George applies her skills from her previous studies and work to provide full time support for GPO Designs.

We're pleased to offer:

  • Weekend & Evening Appointments
  • Fixed Prices with no hidden extras
  • Fast Track Services
  • Appointments 7 days/ week 8am-8pm
  • Free Professional Telephone Advice
  • Professional service
  • High quality deliverables

Terms and Conditions