Plans for new local government offices costing £12.6m in North Somerset will go ahead after the council completed its purchase of a site in Clevedon.
Councillors approved plans to buy the former Clerical Medical building at Castlewood in January.
They said costs would be cut because they could stop renting smaller offices and added the move would not threaten jobs at Weston-super-Mare town hall.
Some council services will be located in Clevedon from the autumn onwards.
Councillor Nigel Ashton said: "We have been able to take advantage of the favourable market conditions and secure a site that meets our needs without resorting to the significant additional investment that would have been needed to build from scratch.
"Despite much speculation in recent weeks, I would also like to reassure residents, particularly those in Weston-super-Mare, that our plans to focus activities at the two sites will not be to the detriment of jobs in Weston town centre."