Suing for Adverse Possession in Delaware: The 20-Year Statutory Rule Explained

Current as of: September 15, 2026 Zoning, Land Use & Boundary Disputes Delaware
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Under Delaware law, claiming ownership of someone else's land via adverse possession requires 20 years of continuous, open, and hostile use without the owner's permission.

Boundary disputes are common in Delaware, whether you live in a dense neighborhood in Wilmington or on sprawling acreage in Sussex County. Sometimes, a neighbor's fence, driveway, or garden crosses the property line for decades. If you or a neighbor have been using a piece of land for a very long time, the legal concept of "adverse possession" (often called squatter's rights) might come into play. This guide explains the strict 20-year statutory rule in Delaware, how hostile and open possession works, and what you can do to protect your residential or agricultural property.

Step-by-Step Process for Adverse Possession in Delaware

Proving or defending against adverse possession in Delaware is incredibly difficult. The courts strongly favor the original, deeded property owner. To establish a viable adverse possession claim, the claimant generally must satisfy a rigorous set of legal requirements.

Step 1: Calculating the 20-Year Statutory Period in Delaware

The most important rule for adverse possession in Delaware is the timeframe. Under 10 Del. C. § 7901, a person must exclusively occupy the land for a continuous and uninterrupted period of 20 years. If the squatter abandons the property for even a few months, or if the true owner reasserts control during that two-decade window, the 20-year clock resets to zero.

Step 2: Hostile and Open Possession Explained

"Hostile" does not mean violent; in legal terms, it simply means the squatter is using the land without the true owner's permission. Furthermore, the use must be "open and notorious." This means the squatter is not hiding their use of the property in the middle of the night. Their actions must be so visible and obvious (like building a fence, paving a driveway, or mowing a lawn daily in Dover or Newark) that any reasonable property owner would notice the trespass.

Step 3: Claims on State-Owned Land vs. Private Lots

It is crucial to understand who owns the land. In Delaware, you cannot claim adverse possession against government property. Whether it is a state park managed by the government, county-owned land in Georgetown, or a municipal sidewalk in Wilmington, state-owned land is entirely immune. Adverse possession only applies to privately owned residential, commercial, or agricultural lots.

Step 4: How Landowners Can Interrupt a Squatter's Timeline

Under Delaware law, merely sending a cease-and-desist letter, posting signs, or calling local police will not interrupt an adverse possession timeline. As the Delaware Court of Chancery established in Tumulty v. Schreppler, 132 A.3d 4 (DE Court of Chancery 2015), interrupting the statutory 20-year period requires the true owner to actually oust the adverse possessor. This means the owner must either physically re-enter and possess the land in a manner that completely excludes the squatter, obtain a judgment in an ejectment action under 10 Del. C. § 6701 filed in the Delaware Superior Court, Wilmington (or your county courthouse) or a quiet title action in Chancery Court, or secure a written agreement where the squatter explicitly acknowledges title and accepts permissive use.

Step 5: Filing a Quiet Title Action

If the 20 years have passed and the squatter believes they own the land, they must file a "Quiet Title" lawsuit in the Delaware Court of Chancery, Georgetown (or the applicable county branch). A judge will review historical surveys, aerial photographs, and witness testimonies before deciding whether to legally transfer the property deed to the squatter.

How Much Does it Cost to Litigate in Delaware?

Fighting over a strip of land is often more expensive than the land itself is worth, but it is necessary to clear the title.

Litigation ExpenseEstimated Cost in Delaware
Boundary Survey by a Licensed Professional$500 - $2,500 depending on lot size and terrain
Attorney Retainer Fees$3,500 - $10,000+ to initiate a Quiet Title action
Court Filing Fees$250 - $400 for Chancery or Superior Court filings
Title Search and Abstract$200 - $500 to review historic deeds and claims

How Long Does the Process Take?

Once a Quiet Title lawsuit is filed, resolving an adverse possession dispute in Delaware typically takes 12 to 24 months. Gathering decades of evidence, securing expert testimony from land surveyors, and waiting for a trial date in the Court of Chancery can be a lengthy and methodical process.

Frequently Asked Questions (FAQ)

Do I have to pay property taxes to claim adverse possession in Delaware?

Unlike some states that strictly require the squatter to pay property taxes to claim adverse possession, Delaware law generally does not make tax payment an absolute requirement. However, paying taxes on the disputed land is incredibly strong evidence of "open and notorious" ownership claims.

Can I claim adverse possession if I rented the house?

No. If you have a lease agreement, you are paying rent and have the owner's permission to be there. This means your possession is not "hostile," making an adverse possession claim impossible.

What happens if the property owner is a minor or mentally incapacitated?

Delaware law provides tolling exceptions under 10 Del. C. § 7903. If the true owner is under a legal disability (like being a minor or legally incompetent) when the squatter first enters the land, the 20-year clock may be paused until the disability is removed.

Can I just tear down a neighbor's fence if it's on my property?

Taking matters into your own hands by destroying property is highly discouraged and can lead to criminal mischief charges. You should consult with a lawyer to send a demand letter or seek a court injunction to force the neighbor to remove it legally.


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