Ryogoku sits at a GRM of 186x and a gross yield of 6.46%. Kinshicho comes in at 195x and 6.16%. Both stations are inside Sumida-ku, five to twelve minutes from Asakusa on foot or by train, and both sit in the strongest yield band of our Tokyo benchmark. Here is what four portals of real estate data say about building a short-term rental thesis in one of Tokyo's most overlooked investment wards.
Why Sumida gets missed by most foreign buyers
The default Tokyo investment conversation circles around Shinjuku, Shibuya, Minato, and Chuo. These wards are liquid, they are well-documented in English, and every Tokyo-focused real estate agent knows them by heart.
Sumida-ku does not fit that pattern. It sits northeast of the Imperial Palace, bounded by the Sumida River to the west and the Arakawa River to the east. Its stations are not in the major commuter hubs. Its brand recognition among foreign buyers is almost zero outside of the Asakusa corridor.
This is exactly why the data is interesting.
Our database tracks 403,000 active rental listings across Suumo, Lifull HOME'S, AtHome, and Rakumachi. When we run the GRM analysis for Sumida at station level, the ward comes out consistently better than its reputation would suggest. The market has not priced in the premium that tourist density and Skytree proximity will command over the next decade.
The station-level numbers
Our methodology calculates GRM as median sale price per m2 divided by median rent per m2 per month, for stations with a minimum of 20 active sales listings and 20 active rent listings. All figures are monthly-basis GRM, not annual.
Ryogoku: GRM 186x, gross yield 6.46%, liquidity 624 active listings (two-star tier).
Ryogoku is best known internationally as the sumo district. What the data shows underneath that tourism brand is a residential market with strong rental absorption and a price-to-rent ratio that still sits in the "strong yield" band of our benchmark. A property acquired at the median here generates a gross yield that is 1.5 percentage points higher than Shibuya (239x, 5.01%) and nearly 2 points higher than Azabu-juban (252x, 4.76%).
Kinshicho: GRM 195x, gross yield 6.16%, liquidity 839 active listings (two-star tier).
Kinshicho is the commercial anchor of Sumida, with one of the highest transaction volumes of any station in the ward. The higher liquidity relative to Ryogoku means faster price discovery and a more active resale market. For investors prioritising exit optionality over absolute yield, Kinshicho is the stronger choice within Sumida.
Asakusa (Taito-ku, adjacent): GRM 208x, gross yield 5.78%, liquidity 734 active listings.
Asakusa sits technically in Taito-ku rather than Sumida, but the two wards share the same short-term rental catchment area. The GRM premium at Asakusa reflects the global tourism brand. You pay more per unit of rent here. Whether that premium is justified depends on your Airbnb yield assumptions. If you model 65% annual occupancy at a 20,000 yen ADR, the math closes. If you are more conservative, Ryogoku at 186x gives you more margin of safety from day one.
Minowa (Taito-ku): GRM 196x, gross yield 6.12%, liquidity 629 listings.
Minowa is the least branded station in this cluster. It sits at the northern edge of Taito, one stop from Ueno on the Hibiya line. The yield profile is nearly identical to Kinshicho at a lower price point, which makes it worth including in any shortlist for investors with a tighter budget.
What short-term rental actually looks like here
Under the Minpaku law (民泊新法), any residential property in Sumida and Taito can operate up to 180 days per year as a short-term Airbnb-type rental, provided the owner registers with the ward and meets fire safety requirements. No special license. No hotel conversion. The registration process typically takes four to eight weeks.
The 180-day ceiling is not the constraint most buyers assume it to be. A 2LDK in Ryogoku operated under the hybrid model (180 days Minpaku during peak tourist seasons, followed by six months of monthly furnished rental targeting expats and corporate secondments) can generate annual revenue that competes with a full 365-day operation, without the ¥2 to ¥5 million conversion cost or the ongoing service desk fees of a kan-i shukusho license.
Foreign tourist density in Sumida is structurally high and growing. Asakusa consistently ranks as one of Tokyo's top three foreign tourist destinations. The Skytree corridor adds a second attractor. The 2025 World Expo afterglow and the inbound travel recovery from China and Southeast Asia have reinforced occupancy rates across eastern Tokyo wards since late 2024.
The asset type question
Most short-term rental demand in Sumida and Taito falls into two categories.
The first is 1LDK and 2LDK mansion units. These are the easiest to Minpaku-register, the easiest to furnish for tourism use, and the fastest to exit. They trade more frequently, which means the price discovery is tighter and you are less likely to be the only buyer at a given price point. The GRM range for this asset type in Sumida runs 185x to 210x depending on station and floor.
The second is the small wooden townhouse (kodate) in Taito-ku, which exists in very small numbers but commands a meaningful premium on Airbnb for groups seeking a traditional Tokyo experience. These properties are harder to source, harder to Minpaku-register (older construction, fire compliance is more complex), and carry higher vacancy risk. They work for investors who want to run the asset themselves and are comfortable with active management. For remote owners, the mansion segment is the lower-friction path.
The station shortlist logic
If you are building a shortlist for a Sumida or Taito acquisition, the ranking by objective investment merit looks roughly like this.
For yield prioritisation: Ryogoku first, then Minowa, then Kinshicho. Asakusa sits at a premium that requires a high-confidence Airbnb thesis to justify.
For liquidity and resale optionality: Kinshicho first, then Asakusa. Transaction volume is higher at both, which compresses your exit timeline if you need to sell.
For budget constraints: Minowa and the outer edge of Taito allow entry at a lower absolute price while preserving a yield profile comparable to the core stations.
The data does not resolve the regulatory pathway question or the financing structure question. Those depend on your operating model and your residence status in Japan. But as a first filter for station selection, the GRM benchmark is the fastest honest signal available.
FAQ
What is the GRM for Sumida-ku stations? Our benchmark (Suumo, Lifull, AtHome, Rakumachi, March 2026) shows Ryogoku at 186x and Kinshicho at 195x. Both sit in the "strong yield" band (144-192x and just above) with gross yields of 6.16 to 6.46%.
Can foreigners operate Airbnb in Sumida? Yes. Under the Minpaku law (民泊新法), any residential property in Sumida-ku can operate up to 180 days per year as a short-term rental after ward registration. There is no restriction on foreign ownership.
Is Sumida better than Shibuya for short-term rental investment? On a pure yield basis, yes. Sumida (186-195x GRM) offers 1.5 to 2 percentage points more gross yield than Shibuya (239x) or Minato (252x). The trade-off is lower brand recognition and lower resale liquidity.
What is the difference between Ryogoku and Asakusa for Airbnb? Ryogoku (186x) offers higher yield and lower entry price. Asakusa (208x) offers higher tourist demand and stronger occupancy assumptions. The right choice depends on your yield assumptions and operating model.
What asset type works best for Minpaku in Sumida? 1LDK and 2LDK mansion units. Easier to register, easier to furnish, faster to exit. Small kodate (townhouses) in Taito exist but require more management intensity and are better suited to hands-on operators than remote foreign owners.
Data: Tokyo Insights proprietary database. 4 portals (Suumo, Lifull HOME'S, AtHome, Rakumachi). 403,000+ active listings. GRM methodology: median sale price per m2 divided by median rent per m2 per month. Minimum 20 sales and 20 rent listings per station. March 2026. Gross yields only, before taxes, management fees, and vacancy.
Tokyo Insights is an independent real estate analysis firm. Fee-only. Commission-free.