https://api-prod.corelogic.com/trestle/odata/Property?$filter=not(BedroomsTotal le 3) and (PropertyType eq 'Residential')&$select=ListingKey,BedroomsTotal,PropertyType,StreetName,StreetNumber,City,ModificationTimestamp,OriginatingSystemName,OriginatingSystemSubName,Appliances,ListingContractDate,AssociationFeeFrequency,BedroomsTotal&$top=11
A boolean ‘Not’ must enclose its operands in a parenthesis with not as an operator i.e. not(City eq ‘Elkwood’).