make arcpy script quicker

The script below is used to update a shp which is missing values from another .shp using a spatial reference. It’s taking about 19 minutes to run through ~53,000 rows. Any ideas on how I can make it quicker?

enter code here import arc module and datetime import arcpy, datetime

# Get start time  start =  #Create an error class class NoExist(Exception):     pass  #Get Dataset locations  (need to turn this into a toolbox)  dataSetFolder = arcpy.GetParameterAsText(0) propertyDataset = arcpy.GetParameterAsText(1) suburbsDataset = arcpy.GetParameterAsText(2)  #Test locations exist try:      if not arcpy.Exists(dataSetFolder):         raise NoExist     elif not arcpy.Exists(propertyDataset):         raise NoExist     elif not arcpy.Exists(suburbsDataset):         raise NoExist      arcpy.env.workspace = dataSetFolder  # if data doesnt exist display error message         except NoExist:     print "No data available"     arcpy.AddMessage("No data available")     # construct variable list fc_p = propertyDataset fc_s = suburbsDataset fields = arcpy.ListFields(fc_p) LOCALITYList = []  # build query (blank string) and assign fields to variables query = '"LOCALITY" = \'\'' field_p = ['FID','LOCALITY'] field_s = ['FID', 'ADMINAREA']  # Make feature layers of each of the files arcpy.MakeFeatureLayer_management(fc_s,'suburbs_lyr') arcpy.MakeFeatureLayer_management(fc_p,'properties_lyr')   # use update cursor to identify properties without associated locality with arcpy.da.UpdateCursor('properties_lyr', field_p,query) as Urows:     for Urow in Urows:         # second query for FID while using cursor through rows         query2 = '"FID" = ' + str(Urow[0])         # make a temp layer with the results and then select properties which  are contained in suburbs layer         arcpy.MakeFeatureLayer_management(fc_p,'Temp_properties_lyr', query2)         arcpy.SelectLayerByLocation_management('suburbs_lyr', "CONTAINS",  'Temp_properties_lyr')         # Search cursor to scroll through suburbs         for Srow in arcpy.da.SearchCursor('suburbs_lyr',field_s):             #variable to record result of ADMINAREA in search cursor             Suburb = Srow[1]         # set value of temp properties layer LOCALITY to Suburbs ADMINAREA             Urow[1] = Suburb         print Urow         # continue through rows         Urows.updateRow(Urow)         # place reults into list         LOCALITYList.append(Suburb)         # delete temp properties layer         arcpy.Delete_management('Temp_properties_lyr')  #Delete cursors del Urows