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IMPORTANT NOTICE:  As of October 1, 2020 the City of Ottawa is advancing their Mechanical review and inspection requirements, which will affect your permit process.  The MVDS form is being replaced with a Mechanical Design Report (MDR). Any questions about the program should be re-directed to the City.  buildingpermits@ottawa.ca or call:  613-580-2424 x29312

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Along with an Application for a Permit to Construct, the City of Ottawa requires a Mechanical Design Report (MDR) and a Full Mechanical Design, which includes but not limited to, heat loss/gain calculation, duct layout and design, radiant layout and design, ventilation layout and design to be completed by a Certified Design Firm. The MDR form is intended to ensure that the Ontario Building Code’s 2012 requirements for ventilation, heating and cooling equipment are met. One MDR form supported by a full mechanical design is required for each dwelling unit (apartment, house, semi, civic address).
If you have any questions regarding this process please call our office. 1-877-522-4822 x203.

NOTE: MDR is not an independent form which can be completed in 1-2 business days; it is a part of a Full Mechanical Design package. The production and delivery time depends on the size and the complexity of the project.
Ottawa MDR Form
Ottawa Residential Mechanical Ventilation Design Summary Form