Tool 5 - Potential Build-Out Analysis

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Islands Trust

TOOL 5 - Potential Build-Out Analysis
5.1 Subdivision Potential Mapping Methodology

The purpose of this mapping analysis is to calculate the total number of residential lots that could
hypothetically be created by subdivision within a local trust area or major island under the current
zoning. The outcome is delineated on a map showing subdividable parcels, the total number of additional
potential lots for each parcel, and a summary table.

1. Where a planning project requires a subdivision potential map, the project manager will consult with
the Information Services Manager early in the project development stage to establish the scope of
the exercise and determine if internal staff resources will be available or if the project budget needs
to identify specific funding to support an external contractor. The project manager and Information
Services Manager will coordinate the timeline for the mapping work.

2. The project manager or delegated planner will complete an Excel table provided by Information
Services identifying existing residential zones and their associated minimum average lot size (in
hectares).

3. GIS will utilize the presented model and associated Python algorithm to calculate the maximum
number of additional lots per parcel (subdivision potential).

4. Standard Exclusion Criteria Include the following:
e Zones where residential use is only permitted as an accessary use.
e Local Trust Area (LTA) associated islands, except where subject of a project.
e Parks or Protected Areas.
e Strata common property.

5. Adraft map will be prepared by Information Systems for review by the designated planner. The
designated planner will verify and adjust the preliminary results, considering island-specific
exceptions. Examples include:

e Remainder lots where further subdivision is restricted by covenant

e Comprehensive Development zones

e Corporate Co-ops

e Other local trust committee (LTC) covenants which restrict further development.

6. Following review by the designated planner, a final version will be produced by Information Systems
as a pdf. The map shall be produced using a standard format, include a summary table, be dated and

include the following disclaimer note:

"Limits on future subdivision potential which may exist but are not considered include lot
configurations, park dedication, access, servicing requirements, topography, and covenants."

Islands Trust Housing Options Toolkit, 2024 1

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Islands Trust

5.2 Dwelling Potential Map Methodology

The purpose of this mapping analysis is to calculate the total number of dwellings that could
hypothetically be developed within a local trust area or major island under the current zoning. The
outcome is delineated on a map showing vacant parcels and the total number of additional potential
dwellings, and a summary table of potential additional dwellings by zone. The exercise can be limited to
calculating potential dwellings alone, but is typically unde

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