MAINE SUPREME JUDICIAL COURT Reporter of Decisions Decision: 2026 ME 31 Docket: Sag-25-369 Submitted On Briefs: February 18, 2026 Decided: April 2, 2026
Panel: MEAD, CONNORS, LAWRENCE, and DOUGLAS, JJ., and HJELM, A.R.J.
OAK HILL CONDOMINIUMS
v.
DIANE MARCHETTI et al.
LAWRENCE, J.
[¶1] Caroline Thibeault appeals from an order of the Superior Court
(Sagadahoc County, Billings, J.) denying her motion to intervene in a foreclosure
action that had been brought by Oak Hill Condominiums against Diane
Marchetti, Thibeault’s mother and the owner of the condominium unit subject
to the foreclosure action. Because we find no error in the court’s determination,
we affirm the court’s denial of Thibeault’s motion for intervention as of right,
filed pursuant to M.R. Civ. P. 24(a)(2), and her alternative motion for permissive
intervention, filed pursuant to M.R. Civ. P. 24(b). 2
I. BACKGROUND
[¶2] Marchetti owns a condominium unit in Oak Hill Condominiums
(the Condominiums). Thibeault, Marchetti’s daughter, occupies the unit along
with her son who has a disability, while Marchetti lives elsewhere.
[¶3] In January 2025, the Oak Hill Condominium Unit Owners
Association (Oak Hill) filed a complaint for foreclosure and sale of Marchetti’s
condominium unit. See 33 M.R.S. § 1603-116(a) (2025); 14 M.R.S. § 6321
(2025). The complaint alleged that Marchetti was in default for failing to pay
common charges and assessments, rule violation fines, and legal fees. The rule
violation fees were allegedly a result of Thibeault’s commercial use of
Marchetti’s condominium while occupying it. In response, Marchetti filed an
answer and asserted several affirmative defenses, including that Oak Hill “failed
to comply” with the Americans with Disabilities Act (ADA) and the Maine
Human Rights Act (MHRA) by failing to offer and provide an accommodation to
Thibeault and her son.
[¶4] In May 2025, Thibeault filed a motion to intervene as of right and,
in the alternative, for permissive intervention pursuant to M.R.
Civ. P. 24(a)(2)-(b). Thibeault sought intervention as of right because she
argued that she has a direct and substantial interest in the litigation as the 3
occupant of the unit, that her ability to assert and litigate claims under the Fair
Housing Act (FHA) and MHRA will be severely impaired if intervention is
denied, and that her interests are not adequately represented by Marchetti.
See M.R. Civ. P. 24(a)(2). Thibeault alternatively sought permissive
intervention because she contended that her claims and defenses generate
questions of law and fact in common with the foreclosure action. As required
by Rule 24, Thibeault attached to her motion an answer and affirmative
defenses, which included allegations that Oak Hill failed to comply with the
ADA, MHRA, and FHA by failing to offer a reasonable accommodation to her and
her son who occupy the unit. See M.R. Civ. P. 24(c). In response, Oak Hill filed
an objection to Thibeault’s motion to intervene, and Thibeault followed with a
reply to Oak Hill’s objection.
[¶5] The court summarily denied Thibeault’s motion to intervene both
as of right and permissively. Thibeault timely filed a notice of appeal.1
See M.R. App. P. 2B(c)(1).
1 Although an appeal from a denial of a motion to intervene is interlocutory, it falls within a clear
exception to the final judgment rule, and we therefore immediately review the court’s denial of Thibeault’s motion to intervene. See State v. MaineHealth, 2011 ME 115, ¶ 7, 31 A.3d 911 (recognizing an exception to the final judgment rule for appeals challenging the denial of a motion to intervene). 4
II. DISCUSSION
[¶6] We review a trial court’s ruling on a motion to intervene, both as of
right and permissively, “for error of law or abuse of discretion.” State v.
MaineHealth, 2011 ME 115, ¶ 7, 31 A.3d 911.
[¶7] Maine Rule of Civil Procedure 24 governs intervention, both as of
right and permissively, in civil suits. For a nonparty to intervene as of right,
Rule 24(a)(2) provides:
Upon timely application anyone shall be permitted to intervene in an action . . . when the applicant claims an interest relating to the property or transaction which is the subject of the action and the applicant is so situated that the disposition of the action may as a practical matter impair or impede the applicant’s ability to protect that interest, unless the applicant’s interest is adequately represented by existing parties.
In other words, a nonparty can intervene as of right if “(1) he claims an interest
in the property or transaction that is the subject of the action, and (2) he is so
situated that the disposition of the action may impair or impede his ability to
protect his interest, and (3) his interest is not adequately represented by the
existing parties to the action.” Doe v. Roe, 495 A.2d 1235, 1237 (Me. 1985); M.R.
Civ. P. 24(a)(2). Alternatively, a court may grant permissive intervention when
a nonparty’s “claim or defense and the main action have a question of law or
fact in common” and intervention will not “unduly delay or prejudice the 5
adjudication of the rights of the original parties.” M.R. Civ. P. 24(b);
In re Children of Mary J., 2019 ME 2, ¶ 6, 199 A.3d 231. We have previously
stated that Maine’s rule governing intervention is “virtually the same as the
federal rule.” Doe, 495 A.2d at 1237 n.4.
A. Intervention as of Right
[¶8] In concluding that the court did not err by denying Thibeault’s
motion to intervene as of right, we agree that she does not satisfy any of the
three prongs of Rule 24(a)(2).
[¶9] First, Thibeault argues that she has a direct, substantial, and legally
protectable interest for several reasons, including that she has occupancy rights
and federal and state statutory civil rights at stake in the underlying foreclosure
action.
[¶10] We have recognized that what constitutes an interest under
Rule 24(a)(2) “may elude precise and certain application in some instances,”
but have characterized the interest as a “direct interest at stake in the
underlying claim itself.” Doe, 495 A.2d at 1238. In this foreclosure action, the
interest at stake is one of ownership, an interest only Marchetti has as the sole
owner of the condominium unit. Further, only Marchetti has a contractual
relationship with Oak Hill because she purchased the unit subject to the terms, 6
conditions, and restrictions contained in the Condominiums’ Declaration,
which states that “[e]ach unit owner shall comply strictly with the Bylaws and
with the administrative rules and regulations adopted by the [Oak Hill] Board.”
(Emphasis added.) See 33 M.R.S. § 1602-101(a) (2025) (stating that real estate
of the condominium to be conveyed to unit owners must be described in the
Declaration that is recorded in the same manner as a deed). Thibeault and Oak
Hill do not have any contractual relationship, and so she is not subject to any
contractual agreement with Oak Hill; nor does Thibeault have a leasehold
interest because, as far as the record shows, there is no lease agreement
between Marchetti and Thibeault and Thibeault has no obligation to pay rent
to Marchetti. This makes Thibeault’s interest purely possessory as an occupant,
Free access — add to your briefcase to read the full text and ask questions with AI
MAINE SUPREME JUDICIAL COURT Reporter of Decisions Decision: 2026 ME 31 Docket: Sag-25-369 Submitted On Briefs: February 18, 2026 Decided: April 2, 2026
Panel: MEAD, CONNORS, LAWRENCE, and DOUGLAS, JJ., and HJELM, A.R.J.
OAK HILL CONDOMINIUMS
v.
DIANE MARCHETTI et al.
LAWRENCE, J.
[¶1] Caroline Thibeault appeals from an order of the Superior Court
(Sagadahoc County, Billings, J.) denying her motion to intervene in a foreclosure
action that had been brought by Oak Hill Condominiums against Diane
Marchetti, Thibeault’s mother and the owner of the condominium unit subject
to the foreclosure action. Because we find no error in the court’s determination,
we affirm the court’s denial of Thibeault’s motion for intervention as of right,
filed pursuant to M.R. Civ. P. 24(a)(2), and her alternative motion for permissive
intervention, filed pursuant to M.R. Civ. P. 24(b). 2
I. BACKGROUND
[¶2] Marchetti owns a condominium unit in Oak Hill Condominiums
(the Condominiums). Thibeault, Marchetti’s daughter, occupies the unit along
with her son who has a disability, while Marchetti lives elsewhere.
[¶3] In January 2025, the Oak Hill Condominium Unit Owners
Association (Oak Hill) filed a complaint for foreclosure and sale of Marchetti’s
condominium unit. See 33 M.R.S. § 1603-116(a) (2025); 14 M.R.S. § 6321
(2025). The complaint alleged that Marchetti was in default for failing to pay
common charges and assessments, rule violation fines, and legal fees. The rule
violation fees were allegedly a result of Thibeault’s commercial use of
Marchetti’s condominium while occupying it. In response, Marchetti filed an
answer and asserted several affirmative defenses, including that Oak Hill “failed
to comply” with the Americans with Disabilities Act (ADA) and the Maine
Human Rights Act (MHRA) by failing to offer and provide an accommodation to
Thibeault and her son.
[¶4] In May 2025, Thibeault filed a motion to intervene as of right and,
in the alternative, for permissive intervention pursuant to M.R.
Civ. P. 24(a)(2)-(b). Thibeault sought intervention as of right because she
argued that she has a direct and substantial interest in the litigation as the 3
occupant of the unit, that her ability to assert and litigate claims under the Fair
Housing Act (FHA) and MHRA will be severely impaired if intervention is
denied, and that her interests are not adequately represented by Marchetti.
See M.R. Civ. P. 24(a)(2). Thibeault alternatively sought permissive
intervention because she contended that her claims and defenses generate
questions of law and fact in common with the foreclosure action. As required
by Rule 24, Thibeault attached to her motion an answer and affirmative
defenses, which included allegations that Oak Hill failed to comply with the
ADA, MHRA, and FHA by failing to offer a reasonable accommodation to her and
her son who occupy the unit. See M.R. Civ. P. 24(c). In response, Oak Hill filed
an objection to Thibeault’s motion to intervene, and Thibeault followed with a
reply to Oak Hill’s objection.
[¶5] The court summarily denied Thibeault’s motion to intervene both
as of right and permissively. Thibeault timely filed a notice of appeal.1
See M.R. App. P. 2B(c)(1).
1 Although an appeal from a denial of a motion to intervene is interlocutory, it falls within a clear
exception to the final judgment rule, and we therefore immediately review the court’s denial of Thibeault’s motion to intervene. See State v. MaineHealth, 2011 ME 115, ¶ 7, 31 A.3d 911 (recognizing an exception to the final judgment rule for appeals challenging the denial of a motion to intervene). 4
II. DISCUSSION
[¶6] We review a trial court’s ruling on a motion to intervene, both as of
right and permissively, “for error of law or abuse of discretion.” State v.
MaineHealth, 2011 ME 115, ¶ 7, 31 A.3d 911.
[¶7] Maine Rule of Civil Procedure 24 governs intervention, both as of
right and permissively, in civil suits. For a nonparty to intervene as of right,
Rule 24(a)(2) provides:
Upon timely application anyone shall be permitted to intervene in an action . . . when the applicant claims an interest relating to the property or transaction which is the subject of the action and the applicant is so situated that the disposition of the action may as a practical matter impair or impede the applicant’s ability to protect that interest, unless the applicant’s interest is adequately represented by existing parties.
In other words, a nonparty can intervene as of right if “(1) he claims an interest
in the property or transaction that is the subject of the action, and (2) he is so
situated that the disposition of the action may impair or impede his ability to
protect his interest, and (3) his interest is not adequately represented by the
existing parties to the action.” Doe v. Roe, 495 A.2d 1235, 1237 (Me. 1985); M.R.
Civ. P. 24(a)(2). Alternatively, a court may grant permissive intervention when
a nonparty’s “claim or defense and the main action have a question of law or
fact in common” and intervention will not “unduly delay or prejudice the 5
adjudication of the rights of the original parties.” M.R. Civ. P. 24(b);
In re Children of Mary J., 2019 ME 2, ¶ 6, 199 A.3d 231. We have previously
stated that Maine’s rule governing intervention is “virtually the same as the
federal rule.” Doe, 495 A.2d at 1237 n.4.
A. Intervention as of Right
[¶8] In concluding that the court did not err by denying Thibeault’s
motion to intervene as of right, we agree that she does not satisfy any of the
three prongs of Rule 24(a)(2).
[¶9] First, Thibeault argues that she has a direct, substantial, and legally
protectable interest for several reasons, including that she has occupancy rights
and federal and state statutory civil rights at stake in the underlying foreclosure
action.
[¶10] We have recognized that what constitutes an interest under
Rule 24(a)(2) “may elude precise and certain application in some instances,”
but have characterized the interest as a “direct interest at stake in the
underlying claim itself.” Doe, 495 A.2d at 1238. In this foreclosure action, the
interest at stake is one of ownership, an interest only Marchetti has as the sole
owner of the condominium unit. Further, only Marchetti has a contractual
relationship with Oak Hill because she purchased the unit subject to the terms, 6
conditions, and restrictions contained in the Condominiums’ Declaration,
which states that “[e]ach unit owner shall comply strictly with the Bylaws and
with the administrative rules and regulations adopted by the [Oak Hill] Board.”
(Emphasis added.) See 33 M.R.S. § 1602-101(a) (2025) (stating that real estate
of the condominium to be conveyed to unit owners must be described in the
Declaration that is recorded in the same manner as a deed). Thibeault and Oak
Hill do not have any contractual relationship, and so she is not subject to any
contractual agreement with Oak Hill; nor does Thibeault have a leasehold
interest because, as far as the record shows, there is no lease agreement
between Marchetti and Thibeault and Thibeault has no obligation to pay rent
to Marchetti. This makes Thibeault’s interest purely possessory as an occupant,
an interest that would be a stake in any potential eviction proceeding.
Thibeault’s argument that her statutory and federal civil rights are the interests
at stake is unpersuasive because the underlying foreclosure action puts the
ownership rights of the unit at stake, not her civil rights or rights to housing.
[¶11] Second, beyond a lack of any legal interest that Thibeault has in the
foreclosure action, Thibeault’s argument that denying intervention will impair
or impede her ability to protect her purported interests is similarly
unpersuasive. Thibeault can seek protection of statutory civil rights through 7
filing a complaint with the Maine Human Rights Commission, a process which
she has already started, demonstrating that those rights are not impaired by
her exclusion as a party in this foreclosure action. See 5 M.R.S. §§ 4582-A(2),
4611 (2025). Additionally, Thibeault can assert a reasonable accommodation
defense in any eviction action, which Oak Hill might pursue depending on the
circumstances after the foreclosure action. See 14 M.R.S. §§ 6001(5), 6322-A
(2025); Hous. Auth. of Bangor v. Maheux, 2000 ME 60, ¶ 6, 748 A.2d 747. Finally,
Thibeault in fact is already active, albeit through Marchetti, in the foreclosure
action. Although Marchetti’s opposition to Oak Hill’s motion for summary
judgment was not before the court at the time it denied Thibeault’s motion,
Thibeault’s affidavit attached to the opposition underscores that she is
providing information and evidence relevant to the request for a reasonable
accommodation to Marchetti. Thibeault can provide, and already has provided,
affidavits and testimony in the foreclosure action, which shows that denying
her intervention will not prevent evidence based on her personal involvement
and firsthand knowledge from being presented and considered. Therefore,
even if Thibeault arguably had some interest in the foreclosure action, denying
intervention would not impair or impede her ability to personally engage in
protecting those purported interests. 8
[¶12] Third and finally, there is no question that Thibeault’s interests are
adequately represented by Marchetti. Marchetti’s objective is to prevent the
foreclosure of her condominium unit by asserting affirmative defenses,
including those under the ADA and MHRA. Thibeault’s objective if she were
permitted to intervene would also be to prevent the foreclosure action by
asserting several affirmative defenses, most of which are similar to or the same
as those asserted by Marchetti. See Sec. & Exch. Comm’n v. LBRY, Inc., 26 F.4th
96, 99 (1st Cir. 2022) (holding that a proposed intervenor’s interests were
adequately represented where the objectives lined up seamlessly by attacking
the same element of the claim at issue). Marchetti is represented by counsel
and, with the benefit of Thibeault’s assistance, has responded to all pleadings
and opposed Oak Hill’s motion for summary judgment, presenting an active
defense to the foreclosure action to protect her ownership interest. Thus,
insofar as Thibeault had any such interests, they are already adequately
represented by Marchetti because she has the same objective as Thibeault.
[¶13] Therefore, the court did not err or abuse its discretion in denying
Thibeault’s motion to intervene as of right. 9
B. Permissive Intervention
[¶14] We also conclude that the court did not err or abuse its discretion
in denying Thibeault’s motion for permissive intervention. When a proposed
intervenor seeks permissive intervention, there is the threshold requirement
that the intervenor’s “claim or defense and the main action have a question of
law or fact in common.” M.R. Civ. P. 24(b). Once that threshold requirement is
met, the court must then “consider whether intervention will unduly delay or
prejudice the adjudication of the rights of the original parties.” Id.
[¶15] In this case, Thibeault’s defenses present common questions of
both law and fact because the underlying defenses that Marchetti intends to
assert are the same as those that underpin a claim by Thibeault against Oak Hill
for housing discrimination. See 5 M.R.S. § 4582-A(2). Despite having common
questions of law and fact, however, joining Thibeault as a party would unduly
delay the foreclosure action. Oak Hill filed a motion for summary judgment in
March 2025, to which Thibeault would then need to file an opposition.
Marchetti has already submitted Thibeault’s lengthy affidavit in opposition to
Oak Hill’s motion for summary judgment. Moreover, as discussed above,
Thibeault’s defenses are being asserted and adequately presented by Marchetti.
See T-Mobile Ne. LLC v. Town of Barnstable, 969 F.3d 33, 41 (1st Cir. 2020) 10
(giving weight to whether the original parties to the action adequately
represented the interest of the proposed intervenors in its analysis of
permissive intervention). Effectively, the efforts contemplated by Thibeault
seem to be duplicative of the measures already advanced by Marchetti, which
would unduly delay the proceedings beyond what has already taken place.
Therefore, denial of permissive intervention was not an abuse of discretion by
the court.
The entry is:
Order denying Thibeault’s motion to intervene affirmed.
James E. Belleau, Esq., and Meredith W. Scott, Esq., Trafton, Matzen, Belleau & Frenette, LLP, Auburn, for appellant Caroline Thibeault
Jonathan M. Flagg, Esq., Flagg Law PLLC, Portsmouth, New Hampshire, for appellee Oak Hill Condominiums
Diane Marchetti did not file a brief
Sagadahoc County Superior Court docket number RE-2025-1 FOR CLERK REFERENCE ONLY