State rules
No cap on the amount; a rent increase needs 60 days' written notice.
| Amount cap | No cap on the amount. |
|---|---|
| Notice for an increase | 60 days' written notice for a change in a month-to-month tenancy. |
| Frequency | No statewide frequency limit beyond the notice and lease rules. |
| Retaliation window | Retaliation is barred, as everywhere; the presumption window varies — document your dates. |
| Local rent caps | Not barred statewide; check your city. |
| Sources | 25 Del. C. § 5106 |
Delaware is different for parks: a lot-rent increase above the CPI-U must pass the state's rent-justification process, with arbitration if residents object.
Own a manufactured home on a rented lot? Delaware has a dedicated park file: lot-rent rules for Delaware parks.
Rules checked October 2026
Sources: 25 Del. C. § 5106. Information, not legal advice.