Delaware Rent Increase Notice Letter

State Cap: No statute. Delaware law does not limit residential rent increases.

Notice Period: 60 days for month-to-month tenancies, with the notice period beginning on the first day of the month following actual notice (25 Del. C. § 5106(d); 25 Del. C. § 5107(a)).

Proof of Service: Landlords must deliver written notice by personal delivery, leaving a copy at the tenant’s dwelling with an adult resident, or sending it by registered, certified, or first-class mail with a certificate of mailing (25 Del. C. § 5113(a)).

Prohibited Acts: Landlords cannot increase rent in retaliation for tenants reporting code violations, joining a tenants’ organization, or exercising statutory rights, or for discriminatory reasons under fair housing laws (25 Del. C. § 5516; 6 Del. C. § 4603).