Here’s a polished revision that remains clear, professional, and approachable:
I am looking for someone who can maintain my lawn once per month for approximately $80 per visit. I previously had someone handling the property maintenance, but they are no longer available due to other work commitments.
If you are interested or would like additional details, please feel free to contact me at 202-921-6611.
Thank you, and I look forward to hearing from you.