Interior Alteration

If you are removing a load bearing wall, you may require engineered beams and there may be changes to HVAC components. If you are not sure if a wall is load bearing contact a BCIN qualified designer, architect or engineer. For any permit that contains a load bearing wall removal provide complete framing plans for the whole house. Show all existing and proposed conditions, all point loads from above through to the foundation. Show any proposed changes to HVAC components. Where extensive interior renovations are proposed additional HVAC materials may be required.

• Existing floor plan for the floor level where the wall is being removed with a demolition plan and any temporary shoring (provide stamped shoring detail). 
  • Indicate direction and span of existing floor joists. 
  • Show existing beams and posts. 
  • Show existing supply outlet and return air inlets location (including the grill opening size of the returns). 
  • The integrity of the HVAC system shall be maintained at all times. All rooms or spaces affected by changes shall have adequate heat sources.
• Proposed plan for the floor level where the wall is being removed. 
  • Indicate direction and span of floor joists. 
  • Show proposed beam locations, sizes, supports. Distance measured from the new beam to the next wall or beam that is supporting the floor joists (for each side of the beam). 
  • Show changes to supply outlets and return air inlets (including the grill opening size of the returns) or provide a note indicating ‘existing HVAC to remain’, if no HVAC changes are proposed. 
  • If ductwork is to be rerouted, existing and proposed configuration should be shown.
• Plan views for all floor levels above and below where the wall is being removed. 
  • Indicate direction and span of all floor joists. 
  • Show all existing/proposed beams, their sizes and post locations. Distance measured from the beam to the next wall or beam that is supporting the floor joists (for each side of the beam).

Windows and exterior doors

If you are making changes to the building façade for windows or doors you will need heritage approval.

Heritage properties are managed to conserve important cultural heritage attributes. Properties on the town's heritage registry require heritage approval. Learn more on our Heritage Planning page or contact a town Heritage Planner for assistance at 905-845-6601 ext. 3870 or 3875. 

New construction or physical changes to your building or land may result in additional property taxes being levied.  These changes may result in an increase of value to your property, and the town is legislated to issue additional property tax billings due to an increase in value. 

• The Municipal Property Assessment Corporation (MPAC) can provide the Town with increased property values (supplementary and/or omitted assessment) for the current tax year and two years prior when: 
  • land is omitted from the assessment roll 
  • use of the property changes 
  • property is improved due to construction, an addition, or renovation 
• You will receive a Property Assessment Change Notice from MPAC, informing you of the supplementary and/or omitted assessment value. 
• Supplementary and/or omitted residential property tax bills are calculated by multiplying the supplementary and/or omitted assessment value by the tax rate for the applicable tax year. 
• MPAC has authority to assign omitted and/or supplementary assessment for the current year and two years prior. 
• If you own a new property or have purchased a home in a new subdivision, the first regular bill you receive from the Town may only be for the portion relating to land value. You should expect a supplementary and/or omitted bill for the structure to follow. 
• Supplementary and/or omitted assessments are issued under the authority of Section 34 and 33 of the Assessment Act. 

For more information on supplementary and omitted taxes, visit our Property Assessments & Appeals page or email tax@oakville.ca.