Rental Property Rules in Delaware (2026)
16 rules on the books across Delaware, 4 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Rent Control
Local limits on how much landlords can raise rent each year, including which properties are covered and exemptions for newer buildings.
Just Cause Eviction
Protections requiring landlords to have a valid reason to evict tenants, such as nonpayment of rent, lease violations, or owner move-in.
Rental Registration
Requirements for landlords to register rental properties with the city, including inspection programs, fees, and occupancy standards.
Wilmington
Significant RestrictionsLandlords must get a business license and occupancy notification before renting any dwelling unit in Wilmington, or…
Read full rule →New Castle County
Some RestrictionsNew Castle County landlords must register every rental unit with the Department of Land Use before renting it out and…
Read full rule →Security Deposit Rules
Caps on how much landlords may collect as security deposits, return deadlines, itemized-deduction requirements, and tenant remedies for wrongfully withheld deposits.
Rent Increase Notice
How much advance written notice a landlord must give before raising the rent on a month-to-month or expiring lease, and how state notice rules differ from any local rent-control caps.
Landlord Entry & Notice
How much advance notice a landlord must give before entering an occupied unit, the permitted reasons (repairs, showings, inspections), allowed hours, and the emergency exceptions under state law.
Repairs & Habitability
The implied warranty of habitability, how long a landlord has to fix essential services (heat, water, plumbing, mold), and tenant remedies such as repair-and-deduct, rent withholding, or breaking the lease.
Delaware: statewide
StatewideHeavy RestrictionsDel. Code tit. 25 § 5305 requires landlords to comply with applicable building and housing codes, provide a unit that…
Read full rule →New Castle County
Significant RestrictionsNew Castle County landlords must respond to emergency habitability conditions, no heat, water, or electricity, within…
Read full rule →Wilmington
Significant RestrictionsWilmington's Housing Code lets the commissioner of licenses and inspections condemn any dwelling as unfit for human…
Read full rule →Kent County
Some RestrictionsKent County's Housing Code sets minimum habitability standards for every rental dwelling in the unincorporated county…
Read full rule →Sussex County
Some RestrictionsSussex County's Housing Code sets the minimum conditions a residential building and its premises must meet before an…
Read full rule →Late Fees & Grace Periods
Whether late rent fees are capped, any required grace period before a fee can be charged, and limits on bounced-check (NSF) and other add-on charges under state law.
Lease Termination & Notice to Vacate
Notice required to end a month-to-month tenancy, the rules and penalties for breaking a fixed-term lease early, and early-termination protections for active-duty military, domestic-violence survivors, and medical hardships.
Eviction Notice & Process
The notice a landlord must give before filing to evict, pay-or-quit and cure-or-quit periods, no-cause termination notice, how long the court eviction process takes in this state, and the tenant's options to respond or cure.
Squatter's Rights & Adverse Possession
When an occupant without a lease gains legal protections, the line between a trespasser and a squatter, how many years of continuous possession adverse possession requires in this state, and how an owner lawfully removes a squatter.