Delaware Security Deposit Rules (2026): The 20-Day Deadline, the One-Month Cap and Move-Out Cleaning

Delaware gives landlords one of the shortest deadlines in the region: 20 days after the lease ends to return a security deposit or send an itemized list of damages. Miss it, and the landlord can owe double the amount wrongfully kept. This guide explains the rules in Delaware’s Landlord-Tenant Code in plain English and shows how to leave a rental so cleaning costs you nothing. It is general information, not legal advice; laws change, so check the current statute for your situation.

Delaware deposit rules at a glance

Delaware security deposit rules (25 Del. C. § 5514)

Rule	What it says
Deposit cap	One month’s rent for leases of a year or more, and for month-to-month tenancies that have lasted a year; furnished units are excluded
Pet deposit	Up to one month’s rent, separate from the security deposit; none for a certified support animal
Where it is held	In a federally insured bank with a Delaware office, in an account used only for deposits; the landlord must tell you where
Return deadline	20 days after the lease ends
Itemized list	Damages and estimated repair costs for each item, within the same 20 days; no list counts as agreeing nothing is owed
Penalty	Double the amount wrongfully withheld if the money isn’t returned on time
Disputing the list	Object in writing within 10 days of receiving the payment and list, or you may be taken to accept it

The forwarding address matters

The landlord sends the refund and the list to the address in your lease or to a forwarding address you give in writing at or before the end of the tenancy. If you give no address, the landlord is excused from the notice and from double damages, although you can still claim unused deposit in writing within a year. Put your new address in an email or letter on the day you hand back the keys, and keep a copy.

What can be deducted

The deposit can cover unpaid rent and late charges, some costs of re-renting after an early termination, and damage caused by the tenant that goes beyond normal wear and tear. The statute’s wording also refers to damage that “cannot be corrected by painting and ordinary cleaning,” which is one more reason to leave the home clean and photographed: a landlord who finds a clean unit has very little to list.

Wear and tear or chargeable? Common Delaware move-out items

Item	Usually wear and tear	Usually chargeable
Walls	Light scuffs, faded paint, small nail holes	Large holes, marker, grease left on kitchen walls
Floors and carpet	Worn walkways, light fading	Pet stains, burns, heavy soil
Kitchen	Aged finishes	Greasy oven and hood, food left in the fridge
Bathroom	Worn grout, older fixtures	Mildew and scale left to build up
Storage	Old stains on concrete	Belongings and trash left behind

Pet deposits and pet hair

Delaware lets a landlord take a separate pet deposit of up to one month’s rent, on top of the security deposit, but not for a certified support animal of a resident with a disability. Damage caused by a pet comes out of the pet deposit first, and only then out of the security deposit. Pet hair is the cleaning issue we see most with pets: it gathers along baseboards, on stairs, in vents and in carpet. Add pet hair removal and carpet extraction to your move-out clean, and photograph the carpets afterwards.

Leaving early

If you end a lease early, the deposit can also cover some of the landlord’s reasonable costs of re-renting, within limits set by the statute, as well as rent you still owe. Read your lease and the termination rules before you give notice, and get any agreement to end early in writing, including what happens to the deposit.

Mildew: the Delaware problem landlords notice

Humid summers make mildew the most common cleaning issue we see in Delaware bathrooms: black spots on grout and caulk, around window frames and on the bathroom ceiling. Left long enough it stains, and a landlord may treat it as neglect rather than wear. Run the fan during and after showers, wipe wet tile, and clean grout monthly in summer. Before you move out, give mildew special attention; caulk that stays black after cleaning may need replacing.

Start at move-in

Every deposit dispute comes back to the condition of the home on the day you moved in. Delaware doesn’t give tenants a ready-made inspection form, so make your own record. Before any furniture arrives, take dated photos and a slow video of every room, including inside the oven, fridge, cabinets and closets, the bathroom grout and caulk, the windows and the floors. Email a short list of existing damage to your landlord and keep the reply. If the home was handed over dirty, say so in writing then; it is far harder to prove at the end.

Questions to ask your landlord before you leave

• Will there be a walk-through, and can I be there?
• Is there anything you want cleaned or fixed before I go?
• Does the lease require professional carpet cleaning?
• Where should the keys go, and how will the hand-back date be confirmed?
• Where is my deposit held? You are entitled to know.

Ask by email so you have a dated record. A landlord who names problems before you leave gives you the chance to put them right for less than a deduction would cost.

Students and shared leases in Newark

Many Newark rentals are shared by students on one lease, which usually means one deposit and one list of deductions after everyone has gone. Agree in writing who cleans which room, and book one clean for the whole unit after the last person moves out; rooms cleaned on different days rarely pass a walk-through. If leases end the same week as finals or graduation, book the clean early, because those days fill up.

A move-out plan that protects your deposit

• At move-in: photograph and video every room, including inside appliances and cabinets, and email a list of existing damage to your landlord
• A month out: check your lease for notice and cleaning clauses
• Two weeks out: book your clean and ask for a walk-through date
• The day before: defrost and empty the fridge and freezer
• Moving day: remove everything, including the basement, garage and storage
• Cleaning day: kitchen, bathrooms, mildew, vents, tracks and floors, then photograph each room
• Key handover: give your forwarding address in writing
• Day 20: if nothing has arrived, write to the landlord quoting the 20-day rule

If your deposit isn’t returned

Start with a short, dated letter: when you left, your forwarding address, the deposit amount and the 20-day rule. If you disagree with deductions, say so in writing within 10 days of receiving the list. If that doesn’t resolve it, the Justice of the Peace Court hears most deposit disputes in Delaware, and the state’s consumer protection and legal aid services can explain your options. Bring your lease, photos, cleaning receipt and copies of everything you sent.

What a move-out clean costs

Our move-out cleaning starts at $190, and our 3 Delaware move cleans so far had a median job total of $706, add-ons included. Your own price is confirmed before you book. See what affects move-out cleaning prices in Delaware, book a move-out clean in Newark or Wilmington, or get a free quote.