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Postnuptial Agreement as an Instrument for Protecting the Land Rights of Indonesian Citizens in Mixed Marriages

Law Research Review Quarterly · Vol. 12 No. 1 (2026) · pp. 331–353

DOI
10.15294/llrq.v12i1.41890
ISSN
2716-3415
Published
2026-02-13
Publisher
Universitas Negeri Semarang
Language
eng

Abstract

Land occupies a strategic position in the Indonesian agricultural legal system, in which the right to land ownership is reserved for Indonesian citizens (WNI) only, in accordance with Article 21 of the Basic Agrarian Law (UUPA). This provision poses a problem for WNI who are in mixed marriages. The reason for this is that the joint property system can lead to land ownership rights being regarded as mixed ownership and thus run the risk of passing into the hands of foreign nationals (WNA). This study analyzes the role of marriage contracts as a legal solution to protect the land ownership rights of WNI in mixed marriages. The study uses a legal-normative method with a legislative and conceptual approach. The results of the study show that Constitutional Court Decision No. 69/PUU-XIII/2015 recognizes prenuptial agreements concluded after marriage, allowing for retroactive separation of property. Furthermore, this protection is reinforced by Government Regulation No. 18 of 2021, Article 70, which states that Indonesian citizens married to foreigners can retain land rights based on a property division agreement. This is further reinforced by technical regulations issued by the Ministry of Agrarian Affairs and Spatial Planning/National Land Agency, which provide legal certainty and administrative mechanisms for land ownership. Overall, marriage contracts serve as an important tool for protecting the constitutional rights of Indonesian citizens, preventing control of land by foreigners, and ensuring justice and legal certainty in mixed marriages.

Keywords

Collaboration network of the authors

12 authors · 11 co-authorship links

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Co-authorOrganisationJoint articles
Hani Fasatun Hasanah HasanahAffiliation unknown1
Odesduto SimamoraAffiliation unknown1
Tahta PerjalananAffiliation unknown1
septi indah lestari septiAffiliation unknown1
Adinda Intan CahyaniAffiliation unknown1
Viesta Tya Amanda WidyasputriAffiliation unknown1
Rahma AliaAffiliation unknown1
Tama Amelia Putri SijabatAffiliation unknown1
Ranma maAffiliation unknown1
Marlina Dewi SetianiAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.unnes.ac.id/journals/snh/oai, first harvested 6 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc)
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	<dc:title xml:lang="en">Postnuptial Agreement as an Instrument for Protecting the Land Rights of Indonesian Citizens in Mixed Marriages</dc:title>
	<dc:creator xml:lang="en">Putri, Fara Diva Arrum Clarisa </dc:creator>
	<dc:creator xml:lang="en">Baidhowi</dc:creator>
	<dc:subject xml:lang="en">Posnuptial Agreement</dc:subject>
	<dc:subject xml:lang="en">Mixed Marriage</dc:subject>
	<dc:subject xml:lang="en">Land Ownership Rights</dc:subject>
	<dc:subject xml:lang="en">Legal Protection</dc:subject>
	<dc:description xml:lang="en">Land occupies a strategic position in the Indonesian agricultural legal system, in which the right to land ownership is reserved for Indonesian citizens (WNI) only, in accordance with Article 21 of the Basic Agrarian Law (UUPA). This provision poses a problem for WNI who are in mixed marriages. The reason for this is that the joint property system can lead to land ownership rights being regarded as mixed ownership and thus run the risk of passing into the hands of foreign nationals (WNA). This study analyzes the role of marriage contracts as a legal solution to protect the land ownership rights of WNI in mixed marriages. The study uses a legal-normative method with a legislative and conceptual approach. The results of the study show that Constitutional Court Decision No. 69/PUU-XIII/2015 recognizes prenuptial agreements concluded after marriage, allowing for retroactive separation of property. Furthermore, this protection is reinforced by Government Regulation No. 18 of 2021, Article 70, which states that Indonesian citizens married to foreigners can retain land rights based on a property division agreement. This is further reinforced by technical regulations issued by the Ministry of Agrarian Affairs and Spatial Planning/National Land Agency, which provide legal certainty and administrative mechanisms for land ownership. Overall, marriage contracts serve as an important tool for protecting the constitutional rights of Indonesian citizens, preventing control of land by foreigners, and ensuring justice and legal certainty in mixed marriages.</dc:description>
	<dc:publisher xml:lang="en">Universitas Negeri Semarang</dc:publisher>
	<dc:date>2026-02-13</dc:date>
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	<dc:identifier>https://journal.unnes.ac.id/journals/snh/article/view/41890</dc:identifier>
	<dc:identifier>10.15294/llrq.v12i1.41890</dc:identifier>
	<dc:source xml:lang="en">Law Research Review Quarterly; Vol. 12 No. 1 (2026): Articles in press; 331-353 </dc:source>
	<dc:source>2716-3415</dc:source>
	<dc:source>10.15294/llrq.v12i1</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.unnes.ac.id/journals/snh/article/view/41890/8512</dc:relation>
	<dc:rights xml:lang="en">Copyright (c) 2026 Law Research Review Quarterly</dc:rights>
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