To estimate the lease end value so far in the future would be a difficult exercise. You might consider estimating what it might be if it was calculated today (knowing it will not be calculated until lease end). To do so you would need to estimate the freehold value of your unit (“B”) today and then you could subtract off the appraised value of the land using the 2022 range of $441 to $485 per buildable square foot identified for your strata (“C). As an arithmetic example (using meaningless values not based on any data), if the appraised value as freehold today was $150,000 “B” would equal $150,000. If it was a 1,000 buildable square foot unit and the appraised land value was $60/buildable square foot, “C” would equal $60,000. Assuming “D” is $0, “B” – “C” – “D” would be $150,000 – $60,000 – $0 or $90,000.