The first Romanesque building on the island is the Basilica of San Gavino in Porto Torres, Giudicato of Torres, which was started under the reign of the Judike Gonario I of Torres Lacon-Gunale (circa 1015–1038). The new basilica was erected near an area where there was an early Christian necropolis and two ancient basilicas datable to the 5th-7th century, the Judike hired workers in Pisa to build it. On the death of Gonnario he was succeeded by his son Barisone I of Torres who continued the construction of the basilica, which was completed before 1063. At the same time Barisone I opened the season of immigration of monastic orders on the island, in fact in 1063 he asked Desiderio di Benevento, abbot of Montecassino, to send a group of monks to take possession of a large area and its appurtenances: including the churches of Santa Maria di Bubalis (identified with Nostra Segnora de Mesumundu) and the church of saints Elia and Enoc, located on top of Mount Santu in the territory of Siligo. In 1089 Constantine I of Cagliari Judike of Cagliari, donated to the abbot of Abbey of Saint-Victor de Marseille, Richard, the Basilica of San Saturnino and other properties for the monks to found a monastery. From then on, for several decades many religious orders arrived on the island, including the Camaldolese, the Vallombrosians, the Cistercians, the Victorians, etc. Following this phenomenon, through the considerable financial commitment of the local nobility (mayorales), numerous private churches were founded, so the development of Romanesque architecture took place which, on the island, took on original and very interesting features.

Giulio Carlo Argan identifies in the Sardinian Romanesque of the 11th and 12th centuries a "particular attitude" to the two new Lombard and Tuscan currents,^[2] which are often merged producing unprecedented results. As in the case of San Nicola di Trullas (before 1113) in Semestene (SS), the palatine chapel of Santa Maria del Regno (1107) in Ardara or the San Nicola di Silanis (before 1122) of Sedini (SS) and the Basilica of San Simplicio in Olbia (11th-12th century) just to name a few. There is no shortage of examples of exclusively Lombard architecture, as in the case of the Church of San Pietro di Zuri by master Anselmo da Como.

There are also numerous French-derived architectures built on behalf of the Marseille monks by Provençal workers, in some cases assisted by local workers trained in Italy. These include the church of San Platano in Villaspeciosa, the church of San Gemiliano in Sestu, San Lorenzo in Cagliari, San Saturnino di Ussana and the first plant of Santa Maria di Uta (CA). But not only the Benedictines of San Vittore acted on the island, but also other orders from beyond the Alps such as the Cistercians, the Templars and the Lerinenses.

Among the Romanesque architecture of Sardinia numerous examples of churches of narrow Tuscan origin can highlighted, such as the Basilica di Saccargia in Codrongianos and the Cathedral of San Pietro di Sorres, Borutta (SS), the Church of Nostra Signora di Tergu or the Cathedral of Santa Giusta of the homonymous center (OR) and the church of San Nicola di Ottana (NU).

Remarkable are also the defensive structures such as the numerous castles and towers of the city of Cagliari, including the Tower of San Pancrazio and the Tower of the Elephant, designed by the Sardinian architect Giovanni Capula.

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  Saccargia, lateral view
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  Church of San Pietro delle Immagini or del Crocifisso, Bulzi
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  Cathedral of Santa Maria di Monserrato, Tratalias
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  Church of San Michele di Salvènero, Ploaghe
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  Cathedral of Sant'Antioco di Bisarcio, Ozieri
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  San Nicola, Ottana
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  San Pietro di Sorres, Borutta
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  Cathedral of San Pantaleo, Dolianova
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  Cathedral of Santa Giusta, Santa Giusta
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  Nostra signora of Tergu
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  Church of San Pietro di Zuri, Ghilarza
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  Church of San Pietro Extramuros, Bosa

• Rassu, Massimo (2008). Templari e ospitalieri in Sardegna. Dolianova. ISBN 88-89978-60-0.{{cite book}}: CS1 maint: location missing publisher (link) ISBN 9788889978603
• Pittui, Frank (2005). Note sulle genealogie e la poetica della chiesa di San Nicola di Silanos. Sedini. in Sacer, n. 12. Sassari.{{cite book}}: CS1 maint: location missing publisher (link) (presente on line sul sito Indipendentzia.net.
• VV., AA. (1997). Speciale Anglona Medievale in Sardegna Antica.
• Coroneo, Roberto (1993). Architettura romanica dalla metà del Mille al primo ‘300. Nuoro: Ilisso. ISBN 88-85098-24-X.
• Serra, Renata (1988). Sardegna Romanica. Milano: Jaca Book. ISBN 88-16-60096-9.
• Sari, Aldo (1981). Nuove testimonianze architettoniche per la conoscenza del Medioevo in Sardegna in Archivio Storico Sardo vol. XXXII.
• VV., AA. (1988). I Cistercensi in Sardegna. in Rivista Cistercense.{{cite book}}: CS1 maint: location missing publisher (link)
• Argan, Giulio Carlo (1978). L’architettura protocristiana, preromanica e romanica. Bari.{{cite book}}: CS1 maint: location missing publisher (link)
• Zanetti, Ginevra (1976). I Cistercensi in Sardegna - Le abbazie di S. Maria di Corte, di Paulis e di Coros. in « Archivio Storico Sardo di Sassari».{{cite book}}: CS1 maint: location missing publisher (link)
• Boscolo, Alberto (1958). L'abbazia di San Vittore, Pisa e la Sardegna. Padova.{{cite book}}: CS1 maint: location missing publisher (link)
• Delogu, Raffaello (1953). L 'Architettura del Medioevo in Sardegna. Roma.{{cite book}}: CS1 maint: location missing publisher (link) (ristampa anastatica, Sassari, 1988)
• Scano, Dionigi (1929). Chiese Medioevali di Sardegna. Firenze.{{cite book}}: CS1 maint: location missing publisher (link) (ristampa anastatica, Cagliari, 1991)
• Salvatore Chessa, L'insediamento umano medioevale nella curatoria di Montes (Comuni di Osilo e Tergu), Sassari, Magnum, 2002, scheda "Bualis-Bainzolu", pp. 145–51 (per la collocazione della chiesa cassinese di Santa Maria in Bubalis o Bualis nell'attuale territorio di Tergu).