Short answer: Delaware landlord repair laws put an exact number on rent withholding: if heat, hot water, water or electricity stays off for 48 hours after you notify the landlord, 25 Del. C. § 5308 lets you keep two-thirds of the daily rent for every day the outage continues, or end the lease. For ordinary repairs, § 5307 allows repair and deduct capped at $400 or half a month’s rent, whichever is less, after 30 days’ written notice.
Delaware’s Residential Landlord-Tenant Code, Title 25, Part III, pairs those remedies with a 90-day retaliation presumption and, for older homes, a new lead-safe certification requirement. The rules reward tenants who put everything in writing and stay current on rent, so this guide flags each place where a missed step can cost you the remedy.
Delaware Landlord Repair Laws at a Glance
| Rule | Delaware | Statute |
|---|---|---|
| Landlord duties | Codes, safe and fit unit, clean common areas, repairs, working facilities, lead-safe (phasing in) | § 5305 |
| Lease termination | 15 days after written notice; immediate if uninhabitable or imminent threat | § 5306 |
| Repair and deduct | Lesser of $400 or half a month’s rent; 30 days to fix or 10 days to start | § 5307 |
| Essential services | After 48 hours: keep 2/3 of daily rent, terminate, or substitute housing | § 5308 |
| Tenant must report defects | In writing, as soon as practicable | § 5505 |
| Retaliation presumption | 90 days after complaint or legal remedy | § 5516(c) |
| Lead certification | Pre-1978 rentals certified lead-free or lead-safe before new tenancy | Chapter 54 |
What Delaware Landlords Must Maintain
Under 25 Del. C. § 5305(a), the landlord must at all times:
- comply with every state and local statute, code, regulation or ordinance on the unit’s maintenance, construction, use or appearance;
- provide a unit that does not endanger tenants’ health, welfare or safety and is fit for its stated purpose;
- keep common areas it maintains clean and sanitary;
- make all repairs needed to keep the unit in as good a condition as it was, or should have been, at the start of the tenancy;
- keep supplied electrical, plumbing and other facilities in good working order; and
- provide a unit free of lead-based paint hazards and certified lead-safe or lead-free as Chapter 54 requires.
Notice what is conditional. Under § 5305(b), trash removal and the supply of water, hot water, heat and electricity are landlord duties if the rental agreement so specifies. Check your lease: if it says you pay the electric company directly, an outage for your own nonpayment is not the landlord’s breach.
Under § 5305(d), proof that the unit meets building and housing codes is prima facie evidence the landlord has complied, so a clean inspection report helps the landlord and a citation helps you.
Shifting repairs to the tenant
Delaware allows it only through a conspicuous writing separate from the lease, under § 5305(c). The work must primarily benefit the unit, cannot be code-compliance work, and must be exchanged for adequate consideration or a rent reduction, in good faith. A landlord cannot make signing such an agreement a condition of renting.
Notice Rules on Both Sides
Delaware puts an affirmative reporting duty on tenants. Under § 5505(a), you must report in writing, as soon as practicable, any defect you have reason to believe the landlord should fix, and you can be liable for harm caused by a late report unless the landlord already had actual notice. That written report is also what starts the landlord’s repair clocks.
The clocks differ by remedy: 15 days for termination over a serious condition, 30 days (or 10 days to begin corrective steps) for repair and deduct, and 48 hours for essential services.
Ending the Lease Over Bad Conditions
Under § 5306(a), if a condition deprives you of a substantial part of the benefit of your bargain, you may give written notice and, if the landlord does not fix it within 15 days after receiving it, terminate the lease. If the condition makes the home uninhabitable or poses an imminent threat to your family’s health or safety, you may terminate immediately after notice, without going to Justice of the Peace Court.
If the landlord caused the condition willfully or negligently, you may recover the greater of your extra cost for equivalent substitute housing for the rest of the lease term, or one month’s rent plus your security deposit, under § 5306(c). A wrongful termination, including over a condition your household caused, leaves you bound by the lease.
Repair and Deduct: the $400 Cap
Section 5307 lets you fix a problem yourself if, after your written notice, the landlord fails to remedy it within 30 days or fails to begin reasonable corrective steps, such as getting an estimate, within 10 days. The work must be done “in a professional manner.” You may then deduct a reasonable sum up to $400 or one-half of a month’s rent, whichever is less, by giving the landlord receipts covering at least the amount deducted.
Three limits apply: no deduction for conditions your household’s lack of care caused, no use of the remedy if you are behind on rent, and you are liable for any injury or property damage caused by the repair work.
Heat, Hot Water, Water and Electricity
When the landlord substantially fails to provide hot water, heat, water or electricity, or a condition materially deprives you of the benefit of your bargain in violation of the lease or a code, and the failure continues 48 hours after actual or written notice, § 5308(a) lets you, by written notice:
- terminate the lease immediately; or
- keep two-thirds of the per diem rent for each day the service, or equivalent substitute housing, is not supplied.
If you stay and the service is still out, § 5308(b) adds a substitute-housing option: rent abates while you are out, and the landlord owes your extra housing cost up to one-half of the abated rent, unless it shows performance was impossible. Withholding does not cap your damages if your losses exceed the amount withheld.
The risk runs both ways. If a court finds you withheld or deducted wrongfully, the landlord may get possession or the amount withheld, and double that amount if you acted in bad faith, under § 5308(d).
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Fire, Lead and Other Specific Conditions
After fire or casualty that substantially impairs the unit through no fault of yours, § 5309 lets you move out and notify the landlord in writing within one week, ending the lease, or stay in the usable part and pay rent reduced in proportion to the lost value.
Delaware’s newer lead law, Chapter 54 of Title 25, requires owners of rental units built before January 1, 1978, to obtain a lead inspector’s certification that each unit is lead-free or lead-safe and file it with the state before a new tenancy begins, with a deadline no later than four years after an implementation date set by 85 Del. Laws c. 98. Leases on pre-1978 units must also disclose certification status. Mold and pest problems are judged under the code-compliance and health-and-safety duties in § 5305(a)(1)-(2).
Tenant Obligations
Section 5503 requires you to obey applicable codes, keep your space clean and safe, dispose of waste, keep plumbing fixtures clean, use systems reasonably, and not willfully or wantonly damage the unit or let guests do so. You also may not remove or disable a working smoke or carbon monoxide detector the landlord installed, including by pulling its batteries.
Retaliation and the 90-Day Presumption
Section 5516 prohibits a landlord from seeking possession, raising rent or cutting services after you complain in good faith about a code violation to the landlord or an enforcement authority, after a government agency files a violation notice, after you organize or lead a tenants’ organization, or after you pursue any legal right arising from the tenancy. If the landlord acts within 90 days, retaliation is presumed.
The landlord can defend by showing one of twelve listed grounds, such as a good-faith move-in, substantial remodeling, full code compliance, a prior termination notice, or a rent increase tied to documented tax or capital costs. A tenant who proves retaliation recovers three months’ rent or treble damages, whichever is greater, plus court costs but not attorney fees.
Worked Example: Lost Heat in Dover
Andre rents a Dover townhouse for $1,350 a month in a 30-day month, and his lease says the landlord supplies heat. The furnace fails on December 2 at 7 a.m. He calls the manager and emails a written notice at 8 a.m.
At 8 a.m. on December 4, 48 hours later, the heat is still off. Andre sends written notice that he will keep two-thirds of the per diem rent. His daily rent is $45, so he may keep $30 for each day without heat. If the heat returns on December 12, eight full days later, he deducts $240 from January’s rent, and he may still sue if his losses, such as space-heater electricity, were higher.
Writing Your Delaware Repair Notice
- date, unit address and the landlord’s notice address from the lease;
- each defect, when you noticed it, and whether it involves heat, water, hot water or electricity;
- the remedy and clock that applies: 48 hours (§ 5308), 15 days (§ 5306) or 30 days (§ 5307);
- a statement that your rent is current;
- delivery proof, since § 5505 requires a written report.
Our repair request letter generator drafts this for you, and the landlord entry notice guide explains Delaware’s 48-hour entry rule and its exception for repairs you request.
Frequently Asked Questions
How much rent can I withhold for no heat in Delaware?
Two-thirds of the daily rent for each day the outage continues after the first 48 hours from your notice, under 25 Del. C. § 5308. You must give written notice that you are withholding.
What is the most I can deduct for a repair in Delaware?
$400 or half a month’s rent, whichever is less, under § 5307, and only with receipts. On $700 rent the cap is $350; on $1,500 rent it is $400.
Can I use repair and deduct if I’m behind on rent?
No. Section 5307(c) bars tenants who are delinquent in rent from using the remedy.
Is my landlord always responsible for heat and water?
Only if the rental agreement says so. Section 5305(b) makes heat, water, hot water, electricity and trash removal landlord duties when the lease specifies them.
How long am I protected after reporting code violations?
An eviction attempt, rent increase or service cut within 90 days is presumed retaliatory under § 5516(c), though the landlord can rebut it with a listed defense.
Your next step is a written report to the landlord, sent today, naming the clock that applies. See also Delaware security deposit law and the repair laws hub for every state. This is general information, not legal advice; LSC’s legal help finder can connect you with free legal aid in Delaware.