Landlord repair effort when returning security deposit

[Bill Flannagan]

I recently completed my first year of being a landlord. The lease has ended and I owe the tenants part of their security deposit back. I had to have some repairs completed. Some things I had to sub out and have invoices to backup the cost. However some of the work I did myself. It took time and feel I should account for the labor for the repairs. Am I correct in charging for the time it took me to repair the property to its original state? If so, how do I account for those costs when itemizing the costs in returning the remaining amount of the security deposit? Thanks in advance for your help! Bill