Ttykuu

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 = datetime.datetime.now()

#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