Access to Arun District Council’s buildings is being strictly limited.
The council has closed its offices to the general public except for people who have become suddenly homeless.
A statement from the council says: “We are operating restricted access to council buildings. The majority of our staff will be working away from the offices.
“Access to buildings will be limited to those people who are homeless on the day. Please use our online and phone services wherever possible as we continue to provide key services, just in a different way.”
The measure affects Bognor Regis Town Hall and the Arun Civic Centre in Littlehampton among other sites.
Bognor Regis Town Council has closed its offices in the town hall. It said: “However, the town council continues to work to support the local community with staff working from home.”
West Sussex County Council is working with Arun and has helped residents in the controlled parking zone around the town centre by easing its restrictions.
A spokesman said: “For residents who need to park on street during self-isolation, a dispensation notice is now available for £10 per vehicle and is valid for 12 weeks.
“It is valid in any on-street bay, including pay and display bays and limited waiting bays but not on yellow lines, taxi ranks, loading bays or disabled bays.”
The same notice is available for NHS staff for free.
On-street parking enforcement will continue with a strict focus on safety and the movement of vehicles.