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Portability Calculations

Generally, there are two major components in calculating portability known as upsizing and downsizing. Here is how it works:

Portability

Upsizing Example

Prior Home

New Home

Market Value
$250,000
Market Value
$400,000
Save Our Homes Assessment Difference
- $100,000
Transfer of Assessment Difference (PORT)
- $100,000
Assessment Value
$150,000
Assessed Value
$300,000

 

Portability

Downsizing Example

Prior Home

New Home

Market Value
$250,000
Market Value
$150,000
Save Our Homes Assessment Difference
- $100,000
Transfer of Assessment Difference* (PORT)
- $60,000
Assessment Value
$150,000
Assessed Value
$90,000

*Note: The amount Save Our Homes Assessment Difference transferred is apportioned at 60%. Here is how it is calculated: 150,000 / 250,000 x 150,000 = $90,000 (New Assessed Value). Also, Portability benefits may be reduced if the benefit is split among multiple homestead owners and the maximum amount of Save Our Homes Assessment Difference that can be transferred is limited to $500,000.