A decision on Tesco's plans for the Golden Harp is set to be made by Royal Borough councillors at a meeting on Wednesday.
The supermarket does not need change of use planning permission to turn the pub into an Express store but has six applications on the table.
If approved by Maidenhead development control panel they would allow it to make a number of changes to the building in Furze Platt Road.
Tesco already owns the lease and wants to add a shop front, signage, a cash machine, an external plant, bollards and a new service vehicle route.
Residents, who set up Furze Platt Action Group to battle the takeover, have stepped up their anti-Tesco campaign by calling on pub owner Enterprise Inns to give them the chance to buy the building.
In a letter distributed locally, action group chairman Mark Newcombe said: "We are proposing to restore the Golden Harp to a community pub.
"This means we are working for you, to create a pub which you, as a resident will be proud of."
The group's ideas for the building include re-designing the interior to include two areas - one for the bar and one for dining and other uses - and it is asking people to email email@example.com with suggestions.
It has written to Tesco chairman Sir Richard Broadbent, appealing to the retailer to 'withdraw gracefully' from the site.
Enterprise Inns has also been sent a letter urging it to listen to the people of Furze Platt.
Petitions against the plans containing nearly 4,000 signatures have been handed to the borough.
Council officers have recommended the panel defers making decisions on the Tesco applications at this stage.
The meeting starts at 7pm at the town hall. Members of the public can attend.
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