Delaware Rent Increase Laws for Landlords (2026)
What Delaware law requires
Delaware is one of the 19 US jurisdictions with a statute that speaks directly to raising rent. It requires 60 days' notice before an increase takes effect, in writing.
Citation: Del. Code Ann. tit. 25, §§ 5107-5108 · read the source
How much can you raise it in Delaware?
There is no statutory ceiling. No cap on the amount. A landlord proposing a modified agreement, which includes a rent increase, must give 60 days' written notice before the agreement expires.
Only four US jurisdictions cap the size of an increase - California, Oregon, Washington and the District of Columbia. Delaware is not one of them, so the amount is a business decision, not a legal one. The usual constraint is practical: a tenant who leaves over an increase costs you a turnover, and a turnover costs more than the increase was worth.
Can you raise rent mid-lease in Delaware?
No. A fixed-term lease fixes the rent for the term. An increase takes effect at renewal, or on a month-to-month tenancy after proper notice. The exception is a lease that contains its own escalation clause agreed at signing.
Serving the notice so it holds up
Most rent increases that fall apart fall apart on the date, not the amount: the notice went out too late, or nobody can prove when it went out. Count the days from delivery, not from the day you wrote it, and keep the proof.
LandlordPro generates the notice against the state's rule, dates it, records when it was sent, and carries the new rent onto the rent roll on the right day so the ledger and the notice agree.
Generate the notice, keep the proof
Free for 2 properties and up to 4 units. No credit card.
Start freeFrequently asked questions
How much notice does a landlord have to give to raise rent in Delaware?
60 days in writing, under Del. Code Ann. tit. 25, §§ 5107-5108.
Is there a limit on how much rent can be raised in Delaware?
No. Delaware sets no cap on the size of an increase. Only California, Oregon, Washington and the District of Columbia cap the amount.
Can rent be raised during a lease in Delaware?
No, unless the lease itself provides for it. A fixed-term lease fixes the rent for the term; an increase belongs at renewal or on a month-to-month tenancy after notice.
Does a Delaware rent increase notice have to be in writing?
Yes.
Do city rules change this in Delaware?
We found no local rent regulation in Delaware, but ordinances change faster than statutes. Check with the municipality before serving notice on a large increase.