https://www.quora.com/I-m-a-landlord-and-I-have-to-increase-rent-but-I-know-my-tenants-can-t-afford-the-new-price-What-should-I-do/answer/Eileen-Wood-2?ch=15&oid=365978410&share=71a784be&srid=u2DwPy&target_type=answer