Let say I have a method (example taken from another post):

public IQueryable<CityBlock> GetCityBlocks(){
    var results = from o in db.city_blocks
                  let buildings = GetBuildingsOnBlock(o.block_id) //returns Iqueryable
                  select new CityBlock {
                      BuildingsOnBlock = buildings,
                      BlockOwner = o.block_owner
                  };
    return results;
}

In the calling method I add Skip() and Take() methods plus some filtering and then do a ToList().

The trouble is that I am getting dozens of database calls - one for all the city blocks and then a separate one for each building.

Is there a way that I can refactor this code to just make two calls: one for the city blocks and one for all the buildings