Md. Code, Real. Prop. § 8-209

(a)    (1)    This section applies only to a residential lease.

(2)    This section does not apply to a landlord who has provided written notice of the intent to terminate a tenancy in accordance with § 8–402(c)(2) of this article.

(b)    (1)    A landlord shall notify a tenant in writing before increasing the tenant’s rent.

(2)    (i)    The notice required under paragraph (1) of this subsection shall:

1.    Be sent by first–class mail with a certificate of mailing; or

2.    If elected by the tenant, sent by electronic delivery in at least one of the following forms:

A.    An e–mail message;

B.    A text message; or

C.    Through an electronic tenant portal.

(ii)    The electronic delivery method shall provide the landlord with proof of transmission of the notice.

(iii)    A landlord may not condition the acceptance of a lease application on the tenant’s election to receive notice under this subsection by electronic delivery.

(3)    A landlord shall provide the notice required under paragraph (1) of this subsection:

(i)    For tenancies for a term of more than 1 month, at least 90 days in advance of the rent increase;

(ii)    For tenancies for a term of more than 1 week, but not more than 1 month, at least 60 days in advance of the rent increase; and

(iii)    For tenancies for a term of 1 week or less:

1.    At least 7 days in advance of the rent increase if the parties have a written lease; or

2.    At least 21 days in advance of the rent increase if the parties do not have a written lease.

(c)    This section does not affect or supersede any local law or ordinance that requires additional notice or provides additional tenant protections.

Official Maryland Rental Forms