Building work is due to start tomorrow on a new library and sensory room at Boyn Grove Community Resource Centre.
The £380,000 project will add a single-storey extension, externally accessed toilets, and extra parking spaces to the centre, which is used by people with learning difficulties and dementia in Maidenhead.
The library will be open to the wider public.
It will be the Royal Borough's newest and 14th library, which will serve the 31,000 people who live within one mile of the Courthouse Road site.
It will be open for 30 hours a week, including Saturdays and Sundays. School children will be able to take advantage of homework help on weekday afternoons.
It is also served by a bus stop on Courthouse Road.
Cllr Eileen Quick (Con, Clewer East), cabinet member for leisure and libraries, said: "Around 10,000 people in the surrounding area will be much closer to a library - particularly important for older and younger residents who are more reliant on walking or cycling to local facilities."
A new sensory room will be installed for those with learning difficulties and disabilities.
Cllr David Coppinger (Con, Bray) said: "We have a really popular resource centre at Boyn Grove and it is ideally placed to offer even more amenities for local residents, including the new sensory room."
The mayor of Windsor and Maidenhead, Cllr Andrew Jenner unveiled a plaque this morning marking the start of construction.
The council expect the project to be finished next Spring.
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