Phazel/tehran-rent-asks

Tehran & Karaj apartment rent asks (Divar)

Asking rents for whole flats on yearly leases, listed on Divar in 489 neighborhoods of Tehran and Karaj. The Tehran part covers all 22 municipal districts, split into five zones. The data comes from the weekly crawls behind rent.nlogn.ir, snapshots 2026-10-09, 2026-10-13, 2026-10-15, 2026-10-19, 2026-10-20.

These are asking prices from the ads. Signed leases usually close somewhat lower. All money is in million toman.

Task

The target is log_ppm, the natural log of the price per m² after converting the ad to a full deposit (رهن کامل): ppm = (deposit_m + rent_m / 0.03) / area_m2. The 3% monthly rate is the median that Divar posters set on the convertible-rent slider. equiv_m is the same price for the whole flat.

deposit_m, rent_m, equiv_m and ppm restate the target in other units, so leave them out of the inputs.

Splits

The split is forward in time by publish date. test holds the ads published in the last 7 days, after 2026-10-13 up to 2026-10-20, and train holds everything published on or before 2026-10-13.

Split	Rows
train	24,213
test	9,438

Agencies often repost the same flat. For cross-validation on train, group folds by group (neighborhood, build year and floor) so the copies stay in one fold.

Columns

Column	Type	Meaning
token, url	str	Divar ad id and link
city, zone	str	tehran/karaj; site zone (west, east, north, center, south, karaj)
hood, hood_name	str	Divar neighborhood slug and Persian name
hood_lat, hood_lon	float	Divar's public centroid of the neighborhood (not the ad's pin)
area_m2	int	floor area
year_built	int	Jalali build year; Divar caps the oldest at 1370 ("1370 or before")
age	int	Jalali year at last_seen − year_built
floor, floors_total, rooms	int	floor (0 = ground; may be null), building floors (often null), bedrooms
elevator, parking, storage	bool	Divar's structured amenities
renovated, complex	bool	ad text mentions renovation / a complex (مجتمع، شهرک، برج …)
convertible	bool	the poster allows converting deposit ↔ rent
deposit_m, rent_m	float	deposit and monthly rent as asked
published_date	date	Divar's publish date
first_seen, last_seen	date	first and last crawl snapshot that listed the ad
days_listed	int	last_seen − published_date
group	str	hood, build year and floor joined by /, for grouped CV
equiv_m	float	full-deposit equivalent of the flat
ppm	float	equiv_m / area_m2
log_ppm	float	target, ln(ppm)

Collection and cleaning

Each weekly crawl reads the newest 150 rent ads in every neighborhood. An ad seen in several snapshots appears once, as its latest version. Within each zone, the cleaning drops ads with an area outside the zone's size range, ads missing the area, build year or price, and ads for shared housing, offices, furnished or short-term lets, or a single room. It also drops ads whose price converts to zero, repeats of another ad's area, build year, floor, deposit and rent (the newest copy stays), and ads more than 3 MADs from the zone's median log price per m².

Zone	Name	Size m²	Ads	Rows	Dropped
west	غرب تهران	40 to 110	16,289	13,048	out_of_size 581, missing 20, not_whole_flat 1,223, zero 6, dup 1,199, outlier 212
east	شرق تهران	40 to 110	8,202	7,116	out_of_size 105, missing 8, not_whole_flat 535, zero 3, dup 387, outlier 48
north	شمال تهران	40 to 110	3,067	2,341	out_of_size 222, missing 7, not_whole_flat 294, zero 1, dup 168, outlier 34
center	مرکز تهران	40 to 110	6,272	4,850	out_of_size 96, missing 17, not_whole_flat 897, zero 3, dup 360, outlier 49
south	جنوب تهران	40 to 110	3,252	2,711	out_of_size 53, missing 2, not_whole_flat 292, zero 4, dup 156, outlier 34
karaj	کرج	40 to 110	4,332	3,585	out_of_size 210, missing 7, not_whole_flat 285, zero 4, dup 213, outlier 28

The dataset leaves out ad titles, descriptions and map pins.

Baseline

The site's own model is an OLS with a neighborhood fixed effect. Its inputs are age (with hinges at 3, 8, 15 and 25 years), log size, parking, elevator, flights climbed without a lift, renovated, complex and days since publishing. On the forward week ending 2026-10-13 in west Tehran, its median absolute percentage error was about 9%. The method is described at rent.nlogn.ir.

License

Released under CC BY-SA 4.0. Each row is the structured fields of a public Divar ad, linked in url. Attribute as "Tehran rent asks, rent.nlogn.ir, from Divar listings".