Data sources and notes
Actual-price registration
Sale data comes from the Ministry of the Interior's actual-price open data, released on the 1st, 11th and 21st of each month. We show only the road and house-number range, never the full address.
Terms and methods
What each number on this site is, how it is calculated and which sales are left out. The terms next to the numbers on each page link here.
Median unit price
Sort the unit prices of all sales in a period from low to high and take the one in the middle. A few unusually expensive or cheap sales barely move it, so it reflects typical prices better than the average.
How it is calculated The unit price is the official "unit price (NTD per square metre)" published with each registered sale; we do not recalculate it. Prices are stored per square metre; Traditional Chinese pages show them per ping, the other languages per square metre with the price per ping in brackets. District and road pages cover the last 24 months. Sales with parking not priced separately, related-party sales and sales with a unit price of 0 are left out.
Number of sales
The number of sale transactions in a period. Sales only: presales and rentals are not included.
How it is calculated On district, road and market pages the count is the number of sales that enter the median (same exclusions as the median unit price), so it can be lower than on the actual-price search page, which counts every sale that matches the filters.
1-year change
How much the median unit price of the last 12 months differs from the median of the 12 months before, in percent.
How it is calculated The 12 months count back from the month of the latest sale in the data (that month included), not from today. A change that rounds to 0.0% is shown as "Flat"; with no sales on either side it is not shown. Same exclusions as the median unit price.
Period and data cutoff
The period is the first and last month the numbers cover; the cutoff is the date of the latest sale in the data.
How it is calculated Both dates come from the data itself, not from today's date. Sales appear only after they are registered and published, so the last month or two usually have fewer sales, which fill in later.
Parking not priced separately
Some sales include a parking space without listing its price separately.
How it is calculated Their unit price mixes in the parking space and would distort the numbers, so they are left out of the median unit price, the 1-year change and the price by floor. The sales themselves are still listed on the actual-price search page.
Ping and square metres
1 ping = 400/121 square metres, about 3.3058 m².
How it is calculated All data is calculated and stored in square metres; ping is only a display unit. Traditional Chinese pages show ping only; the other languages show square metres with ping in brackets. The conversion happens on screen only and does not change sorting or medians.
Median unit price by floor (road page)
The numbers in the road page's "Price by floor" chart: the median unit price of the road's sales on each floor. They are unit prices, not percentages, and are not compared with the district.
How it is calculated Only elevator buildings (high-rise and mid-rise) from the 1st floor up; floors 12 and above are merged. One row per floor from the 1st to the highest floor, with no minimum number of sales per floor; a floor without sales shows "—" and is not filled from the floors around it. Not shown when the road has fewer than 8 matching sales or when its highest floor is below 6.
Road and house-number range
Each sale is shown only by its road (road, street, avenue or named lane) and a 50-number range such as "1–50". Full addresses are never shown.
How it is calculated An address on a lane is placed on the road by its lane number; with several house numbers the first is used. When the source itself gives a range, one narrower than 50 numbers becomes the 50-number band it falls in, and wider ranges are kept. Addresses without a road name use the place or village name.
Small sample
With few sales, one or two sales can move the median a lot.
How it is calculated With fewer than 60 sales in 24 months, the market page marks the number "Small sample". In the market list, an area with fewer than 3 sales in 12 months shows its 24-month median, marked "2 yrs".
Languages, currencies and URLs
Each language has its own URL prefix (such as /zh-tw/ or /en/); the root URL / is the language picker. Every page outputs hreflang and canonical tags. Prices are stored in New Taiwan dollars and converted for display; approximate foreign-currency amounts show the exchange-rate date.
News
Each article is a summary with key points rewritten by the Uchily newsroom, with a link to the original. We don’t republish full articles.
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Every number Ah-Chu uses in an answer comes from the data above; it doesn’t make numbers up. If it doesn’t know, it says so.
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