Renter has more people in house then original lease agreement

[Eric Holm]

I rented a 2 bedroom, 1&1/2 bath duplex to single mom and daughter 3 1/2 years ago for 975 a month. She is now on a month by month rental agreement. Last Sept, her dad and and an invalid man he cares for moved in.

It was to be a temporary situation while on a waiting list for low income senior housing. I told renter to pay 20.00 more per month for added water and septic. Total then was 995.   Im out of the area for 8 months a out of the year and did not keep up with what my market value is supposed to be. It is 1,550 per month per unit.... a place identical to mine. Currently, The dad and invalid are still there. October 1, I raised the rent to 1,045.  And now, I find out a boyfriend and his child are also there. The dad told me that it too is just temporary til the end of the month when the boyfriend will move into his mother’s winter house somewhere nearby.  I’m planning to send the renter notice to comply within 30 days to have no more than 4 people maximum living there.  And since our original lease agreement was a single mom and daughter then come December 1 , if 4 people are living there,I will be raising the rent again closer to market value.  Does anyone see a problem with me doing this?  What would you do?