What some people do is pay $x amount for house cleaning then pay hourly minimum wage for drive time. Example: if minimum wage is $7.25 per hour and it takes 15 minutes to travel to next job, they pay $1.81 for that drive time. Over the week that small amount will add up. So.... you better make sure YOU can afford it as a business owner before you decide you want to be nice to the employee. Over 1 year, depending on drive time and number of houses cleaned it could be a minimum of $1000 ++ just 1 employee. And $1000 is on the low side.
I'll give a better example. Back in another life when we had 12 employees we saved $12,000+ a year by not emptying trash containers in houses. And... not 1 customer ever complained about it. With the way I set up pay we did not pay drive time either so we saved another $12,000+ in drive time pay. While that is a small amount to an employee ($18 a week), it was a minimum $24,000 SAVED for us as a company ($461.50 a week)!