D.G. Biddle & Associates Limited also works closely with Municipal and Provincial Government Approval Agencies to ensure Design Plans meet all Design Criteria and Ontario Building Code.

We offer a full range of services for single lot residential in-fills, commercial re-developments and institutional land uses.

We have extensive experience working with Municipal and other Approval Partners to advance each project as expeditiously as possible.


  • Site Grading Design
  • Municipal Site Services Design, including storm sewers, sanitary sewers, domestic water and fire lines
  • Erosion and Sediment Control Plans
  • Private On-Site Septic System Design
  • Private On-Site Fire Fighting Reservoir Design
  • Site Lighting as Photometrics
  • Electrical Site Servicing
  • Preparation of Site Servicing Designs for new construction and re-development properties (storm sewers, sanitary sewers and water servicing)
  • Development of Site Grading Designs to accommodate existing perimeter drainage patterns and to provide for on-site drainage needs
  • Storm Water Management Designs are unique to each property. We look to solutions which are functional, practical and most importantly economical


  • Whitby Christian Assembly - Church Addition, Whitby
  • Algoma Orchards – New Construction, Newcastle
  • Region of Durham EMS Facility – New Construction, Oshawa
  • MacGillvery Public School – Building Addition, Courtice
  • Neb’s Funworld – New Construction, Building Additons, Oshawa
  • TVM – Peterborough
  • Student Residence – 1305 Simcoe Street North, Oshawa
  • Ajax Go Station, Parking Lot Expansion – Ajax
  • Plaza Re-Development – King / Townline / Eastlawn, Oshawa
  • Callbeck Animal Hospital – Whitby
  • Ultramar Gas Station – Highway 89, New Tecumseth

Birchdale Subdivion, Courtice

Round-a-bout, Darlington Green Subdivision, Bowmanville