A public consultation was launched at the beginning of the year to allow residents to have their say over the future of Manor Green Residence.
The respite care unit, which forms part of Manor Green School site, has been closed since July 2011 due to a £20,000 funding shortfall.
The meeting is due to be held at Windsor Guildhall in the High Street at 7.30pm.
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The Met Office has issued a yellow alert for Windsor and Maidenhead, Slough and Wokingham, warning that rain moving eastwards across the south of the country may turn to snow in some places.