Jeddah Historic District Program announced the discovery of 1200 years old architectural patterns of the Othman bin Affan Mosque

The Othman bin Affan Mosque's 1,200-year-old architectural patterns were found, according to the Jeddah Historic District Programme (JHDP). The statement was made in conjunction with the release of the findings from the Archaeology Project's initial phase in Historic Jeddah. According to the Saudi Press Agency, the archaeological investigations helped to comprehend the mosque's historical architectural patterns and led to the discovery of hundreds of archaeological material remnants, some of which date back about 1200 years.

The mosque has been restored on several occasions over its long history, according to archaeological studies. The mosque's construction phases were all part of the traditional Jeddah architectural style, which was typified by an open courtyard and a covered prayer hall. The mosque's final stage, which is represented by its current form, was left out of these phases. The construction took place in the 14th century AH, which is equivalent to the late 20th century, yet the mosque's area and mihrab stayed the same for more than a millennium.

Studies have shown that, despite the mosque's 400-year tile usage, the majority of maintenance and rebuilding work was done in accordance with the floor's height and patterns, which alternated between conventional tiles, plaster, and clay tiles. Research shows that at every stage of the repair process, floor masons have been using the same tiles, which date back to the 14th century AH, since the end of the Mamluk era (15–16th century).

Archaeologists have discovered ground tanks filled with clean water that were left behind by individuals in charge of creating them about 800 years ago. These findings suggest that the creation of the ground water tank under the mosque was one of the most significant alterations that took place in the mosque. 

Numerous archaeological finds from the Othman bin Affan Mosque span 1,200 years of its history. These include pieces of Chinese porcelain in white and blue that date back to the 11th century AH (17th century AD), Chinese celadon vessels with grey and green glazes from the 4th and 6th centuries AH, and fragments of white, green, and yellow glazed pottery from the 3rd and 4th centuries AH. Experts estimate that these finds are among the oldest artefacts ever found in the mosque.

According to a recent announcement from the JHDP, up to 25,000 artefact fragments from the Jeddah Historic Area have been found that date back to the Islamic caliphates during the first two centuries of the Hijri Calendar, or the 7th and 8th centuries AD.