The actual Community Charges have not yet been set at any of the PW resorts where there are apartments, so there is no way of knowing what they will be on either La Torre or Hacienda Riquelme. Common guess is around 100 - 120 Euros per month, but could easily be quite different at the various resorts depending on resort size, number of residents, facilities to cover, etc. There are significant differences between LT and HR for instance in size and upkeep needs, which is what the Community Charges relate to.
There has not been a legal Community set-up yet at La Torre so no charges have yet been established for any properties there. Mar Menor are all villas or townhouses at the moment and their Community Charges are roughly about 180-220 per month.
Do not assume though that apartments will necessary be cheaper than villas .... the upkeep of the communal areas of an apartment block such as Carpark, Gardens, Pools, Lifts, Stairs etc are far greater than a villa, albeit more to share the cost.
Examples of Golf at Mar menor .... no rates yet for La Torre
18 holes : 77 E in high season and 55 E in Low season
Annual ticket 1,315 E 6Mthly ticket 945 E Wkly 160 E