with open('2015v1.csv', 'rt') as infile:
    with open('2015v1_edit.csv', 'wt') as outfile:
        writer = csv.writer(outfile)
reader = csv.reader(infile)
writer.writerow(next(reader))
for row in reader:
    if int(row[0]) not in Property_ID_To_Delete:
        writer.writerow(row)
Создайте новый CSV-файл, исключающий строки из старого CSV-файла.