[3] After finding this arrangement inadequate, the county leaders decided to procure a purpose-built shire hall: the site they selected was open land on the opposite side of Glanhwfa Road.

[4][5] The new building was designed by Lloyd Williams of Denbigh in the Jacobethan style, built by O. M. Roberts & Sons of Porthmadog in rubble masonry at a cost of £4,453 and was completed in 1899.

[1] The design involved a symmetrical main frontage with five gabled bays facing onto the Glanhwfa Road with the end bays slightly projected forward; the central bay, which also slightly projected forward, featured a round headed doorway with a fanlight flanked by pilasters supporting a segmental moulded surround with a keystone; there was a Venetian window on the first floor and the gable above contained a roundel with the county coat of arms.

[6] The building was extended to the south by a link passage and two extra bays to a design by the county architect, Joseph Owen, in 1912.

[9] However, the shire hall continued to serve as the local registry office as well as the meeting place of Llangefni Town Council.