Great feedback everyone ...
More ideas are rolling in ... instead of adding 15% margin I would like to shoot for 30%. I'm thinking of the following but this might get too complicated.
See 4 person household example below.
Base Rental Amount = $2200/month
Average Utilities = $230/month (2 year data w/ 2 person household)
1. Add 30% margin to average utility cost
2. Include the following in the lease
a. Each additional person (after 2) will add $75/month for utilities. In this example we have a 4 person household.
b. Monthly Rental = $2650 (This is actually the average utilities from past 2 years divided by .7 + base amount + $150 for 2 additional people. Round down to $2650)
c. Tenant will be responsible for utilities in excess of $478 per month (230 divided by .7 + 150).
d. Landlord will rebate tenant utilities in excess of actual monthly total.
e. Landlord will provide tenant with a check at the end of lease for the excess amount.
f. Tenant has the option of rolling the excess into a new lease
A colleague of mine mentioned that I could give the tenant a rebate if I want to keep them. Offering a rebate of any excess at the end of the lease may influence the tenant to roll the rebate into a new lease.
This is just another idea and again I understand this may get too complicated.