By Timothy Rhone

            Imagine you’re looking for a housemate. You put an ad out online and find someone who seems trustworthy. You don’t have the capability to do a formal background check; yet, everything about them seems legitimate. Then, a month later, unannounced, probation officers search your home. They find recreational drugs in the common area and arrest your housemate, calling the police to help them secure the drugs. The police come and search the rest of the house, including your bedroom, where they find more recreational drugs. They arrest you and bring possession charges against you. Was that search legal? Should it be?

            The Fourth Amendment to the United States Constitution guarantees our protection against “unreasonable search and seizures.”[1] It further protects us from searches performed without warrants, or under warrants which fail to describe the place or person to be searched.[2] However, probation agreements typically require the probationer to waive these fourth amendment rights.[3] Allowing probation officers to search the probationer’s property for any violations of their agreement—drugs, weapons, contraband—makes sense. Probation is a much more economical alternative to incarceration and is typically seen as both more effective and better for the probationer.[4]

            To ensure these programs succeed, the government needs a method to sustain them. Consented-to warrantless searches of probationers’ properties are one such method.[5] Probationers can live with non-probationers. These non-probationers are not party to the probation agreement and therefore haven’t expressly consented to waiving their Fourth Amendment rights. At the federal level, probationers “must warn any other occupants that the premises may be subject to searches pursuant” to their probation agreement.[6]

            Both federal and state courts have generally held that anyone knowingly living with a probationer has a diminished right to privacy.[7] Specifically, that the probationer’s consent via their probation agreement renders valid any warrantless search of areas of “shared authority.”[8] This is intuitive. If you know the person you live with is a probationer subject to unannounced, warrantless searches, it follows that you have consented to those searches.[9] By volunteering to live with the probationer, you have volunteered to the conditions of their probation that affect your shared spaces.

            But what if you didn’t volunteer to live with a probationer? In our hypothetical, we discussed a situation in which the non-probationer was unaware that their housemate was on probation. The rules from Matlock tell the probationer to warn other occupants of the potential for searches.[10] However, no probation officer would know of any failure to disclose or be able to enforce disclosure until they showed up to the house. Probationers have incentive to not disclose their status to potential roommates to obtain housing. As a result, the burden would be on the potential housemate to ensure they had checked probation records before allowing a new roommate into their home. This seems unfair and unreasonable to expect a layperson to understand this as a risk.

            If the probationer did not disclose their status, a housemate would have no way of knowing a search was coming. The Supreme Court’s theory that by knowingly deciding to live with a probationer you’ve consented to the conditions of their probation would “evaporate.”[11] If you don’t know that your housemate is a probationer, you can’t consent to the elements of their agreement which necessarily effect you. Without that consent, any search would not only be without a warrant but would be executed against a person who had not waived their Fourth Amendment rights. Such a search would be unconstitutional.[12] Likewise, any evidence gathered because of a search would be inadmissible.[13] This is a significant gap in the law, which creates the substantial possibility that the Fourth Amendment’s protection of the people of the United States can be flouted quite easily. This gap seems to be unaddressed by the Supreme Court or Federal legislation. It is certainly not fixed by the Federal Probation-Conditions Statute.[14] A search of state statutes likewise turns up little.

            The reason for this lack is cited by the Minnesota court in State v. Bursch: courts are unwilling to make rulings on something that could “effectively thwart all probation searches.”[15] One can follow their logic. Exempting any evidence found in a probation search where it could potentially belong to an unknowing household member would create a significant loophole. A strategic probationer would choose to live with housemates to avoid unannounced searches.[16] If this were the case, probation officers would likely cease searching any probationer’s premises if another person lived on it. After all, if any evidence they gathered could be dodged by a claim that it belongs to the unknowing non-probationer why spend the time and money on a search?

            So, we find ourselves with a dilemma. Either an unknowing household member is subject to warrantless search or seizure because of their Probationer roommate; or the probationer’s agreement can’t be appropriately enforced. A few cases address this. They have held that evidence found in a search and used against a non-probationer is void if the search was conducted over the “express refusal of consent by a physically present resident.”[17] However, this does not address an issue where a search is conducted when only the Probationer is home, or when no one is home.

            This gap must be filled. A statute to address the ambiguity that searches in these circumstances produce. The language of that statute should show proper deference to the Fourth Amendment. Its exact language will not be speculated on here, but it should ensure that probation and parole officers cannot execute a search without a warrant where a non-probationer household member might be unaware of their housemate’s status. Further, this burden of ensuring knowledge should be placed on either the probationer or the probation officer, not the unwitting housemate. That could be as simple as the probationer providing other occupants’ names and contact information, and probation officers ensuring notification of those occupants before commencing the normal unannounced search schedule. Alternatively, it could consist of the housemates signing affidavits or waivers that the probationer delivers to probation upon their initial notification of address. No matter the method, this ambiguity needs a solution which alleviates the burden to an unwitting housemate. A statutory solution would be the clearest and most efficient, and both federal and state legislatures should work to ensure this gap in our law is rectified.

[1] U.S. Const. amend. IV.

[2] Id.

[3] R. C. Phillips, Fourth Waiver Searches, 1996 L. Env’t Q. 5–8, 39.

[4] Frank Porporino, Prison vs. Probation…Which Is More Effective?, Int’l Ass’n Corr. & Forensic Psych. (Feb. 21, 2022).

[5] 18 U.S.C. § 3563(b)(16).

[6] Search and Seizure (Probation and Supervised Release Conditions), U.S. Courts (last visited Sept. 16, 2025), https://www.uscourts.gov/about-federal-courts/probation-and-pretrial-services/post-conviction-supervision/overview-probation-and-supervised-release-conditions/chapter-3-search-and-seizure-probation-and-supervised-release.

[7] See United States v. Matlock, 415 U.S. 164, 94 S. Ct. 988 (1974) (confirming a non-probationer knowingly living with a probationer have diminished freedoms from warrantless searches); see also United States v. Harden, 104 F.4th 830, 834 (11th Cir. 2024); State v. Bursch, 905 N.W.2d 884 (Minn. Ct. App. 2017); State v. Green, 349 So. 3d 503 (Fla. Dist. Ct. App. 2022).

[8] Matlock, 415 U.S. at 170.

[9] Bursch, 905 N.W.2d at 893.

[10] Matlock, 415 U.S. at 170.

[11] Barajas v. City of Rohnert Park, 159 F. Supp. 3d 1016, 1025 (N.D. Cal. 2016).

[12] U.S. Const. amend. IV.

[13] Cornell Law School, Unreasonable Search and Seizure, Wex (last visited Sept. 19, 2025), https://www.law.cornell.edu/wex/unreasonable_search_and_seizure.

[14] 18 U.S.C. § 3563.

[15] State v. Bursch, 905 N.W.2d 884, 892 (Minn. Ct. App. 2017) (citing State v. West, 517 N.W.2d 482, 486 (Wis. 1994).

[16] Id.

[17] Georgia v. Randolph, 547 U.S. 103, 120 (2006).