HomeHarvest/examples/price_of_land.py

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2024-11-03 15:23:07 -08:00
"""
This script scrapes sold and pending sold land listings in past year for a list of zip codes and saves the data to individual Excel files.
It adds two columns to the data: 'lot_acres' and 'ppa' (price per acre) for user to analyze average price of land in a zip code.
"""
import os
import pandas as pd
from homeharvest import scrape_property
def get_property_details(zip: str, listing_type):
properties = scrape_property(location=zip, listing_type=listing_type, property_type=["land"], past_days=365)
if not properties.empty:
properties["lot_acres"] = properties["lot_sqft"].apply(lambda x: x / 43560 if pd.notnull(x) else None)
properties = properties[properties["sqft"].isnull()]
properties["ppa"] = properties.apply(
lambda row: (
int(
(
row["sold_price"]
if (pd.notnull(row["sold_price"]) and row["status"] == "SOLD")
else row["list_price"]
)
/ row["lot_acres"]
)
if pd.notnull(row["lot_acres"])
and row["lot_acres"] > 0
and (pd.notnull(row["sold_price"]) or pd.notnull(row["list_price"]))
else None
),
axis=1,
)
properties["ppa"] = properties["ppa"].astype("Int64")
selected_columns = [
"property_url",
"property_id",
"style",
"status",
"street",
"city",
"state",
"zip_code",
"county",
"list_date",
"last_sold_date",
"list_price",
"sold_price",
"lot_sqft",
"lot_acres",
"ppa",
]
properties = properties[selected_columns]
return properties
def output_to_excel(zip_code, sold_df, pending_df):
root_folder = os.getcwd()
zip_folder = os.path.join(root_folder, "zips", zip_code)
# Create zip code folder if it doesn't exist
os.makedirs(zip_folder, exist_ok=True)
# Define file paths
sold_file = os.path.join(zip_folder, f"{zip_code}_sold.xlsx")
pending_file = os.path.join(zip_folder, f"{zip_code}_pending.xlsx")
# Save individual sold and pending files
sold_df.to_excel(sold_file, index=False)
pending_df.to_excel(pending_file, index=False)
zip_codes = map(
str,
[
22920,
77024,
78028,
24553,
22967,
22971,
22922,
22958,
22969,
22949,
22938,
24599,
24562,
22976,
24464,
22964,
24581,
],
)
combined_df = pd.DataFrame()
for zip in zip_codes:
sold_df = get_property_details(zip, "sold")
pending_df = get_property_details(zip, "pending")
combined_df = pd.concat([combined_df, sold_df, pending_df], ignore_index=True)
output_to_excel(zip, sold_df, pending_df)
combined_file = os.path.join(os.getcwd(), "zips", "combined.xlsx")
combined_df.to_excel(combined_file, index=False)