I had a construction-to-permanent loan (cons loan for first half of yr, then perm loan) with two different int rates and int. paid. How do I calculate avg. mort. balance?

[brirad4]

had a home construction loan (@ 3.75%) with increasing balance Jan - May

[ToddL99]

Add the ending mortgage balances for each month and divide by 5 - this will give you the average mortgage balance.