At the beginning of the 20th century, the separately standing bell tower was considered the second oldest structure of the ensemble. Exact data on the time of its construction has not survived, but it is mentioned in the inventory of 1681 as already existing, with a burned head and roof. The bell tower had nine bells, and a tenth, weighing 200 poods, was on the ground. It also featured large iron clockworks. Later, the bell tower was completed: its upper part was raised and covered with a tent. The architecture of the new ringing tier and the tented roof dates back to the 17th century, while the lower part of the bell tower was likely built in the late 16th century, simultaneously with the church of Anthony and Theodosius. Originally, the bell tower had a round shape and consisted of three tiers. The two lower tiers housed rooms for monks, while the upper floor contained the ringing tier and the clock room. The exterior walls were divided by ten pilasters and buttresses, with no windows in the two lower tiers.

In the late 17th century, a new octagonal structure was erected over the old part, incorporating the original round ringing tier. The new ringing was executed in the architectural forms of the 17th century, with arched openings on the faces of the octagon. The corner columns were adorned with small columns and two beams. The tops of the columns were marked by a profiled impost, and the arches were outlined with a stepped archivolt, transitioning into horizontal steps that widened the top of the octagon. The bell tower's tent had a slender silhouette, transitioning into an octagonal prism with a small cupola, decorated with an ornate cross and chains. The tent was decorated with dormers and small windows with triangular pediments.

The enlarged bell tower acquired lightness and elegance, which became especially important as new structures became significantly larger, and in its previous dimensions, the bell tower could have been lost among other buildings of the ensemble.

The bell tower of the Svyensky Monastery was an outstanding example of 16th and 17th-century architecture. Its composition, with pronounced verticality and the contrast of the airy top with the massive base, added variety to the architectural ensemble. Unfortunately, this monument was irretrievably lost.