Where to Live in Tokyo — The Complete 23-Ward Guide [Ep.08] Eastern 3 Wards: Adachi · Katsushika · Edogawa

※ This article is for informational purposes and personal analysis only—not investment, legal, tax, or immigration advice, and not a recommendation to buy or sell any property or financial product. Verify figures, rules, and market data against official sources and consult qualified professionals; you are solely responsible for your decisions. Information reflects the time of writing and may change afterward.

The most common question I get from people exploring Tokyo real estate for the first time: “Is there anywhere in the 23 wards I can get into for around 40 million yen?”

The honest answer: yes — but with trade-offs. The further you move from the center, the more affordable it gets. And in the wards we’re covering today, disaster risk rises alongside the value proposition.

足立区 (Adachi-ku), 葛飾区 (Katsushika-ku), 江戸川区 (Edogawa-ku) — Tokyo’s northeastern and eastern wards offer the strongest price advantages in the 23-ward universe. At the same time, all three sit in low-lying terrain between the Arakawa and Edogawa rivers, and all three carry flood and liquefaction risk ratings of ‘O’ (at-risk). That is a key baseline consideration.

Data reference points: Mansion transaction prices are based on the Ministry of Land, Infrastructure, Transport and Tourism Real Estate Information Library, 2025 Q1–Q4. Rental figures are SUUMO new construction, within 5-min walk of station — these fluctuate regularly. Check the source links for current figures.

Table of Contents

1. Adachi-ku

The reputation problem with 足立区 (Adachi-ku) is well-known — at least in older Tokyo real estate conversations. Industrial zones, aging housing stock, public safety concerns. Some of those perceptions were grounded in reality a decade ago.

What changed the story faster than anything else was 北千住 (Kita-Senju) Station. Five rail lines converge here: JR Joban Line, Tobu Isesaki Line, Tokyo Metro Chiyoda Line, Hibiya Line, and Tsukuba Express. Daily ridership stands at 501,818 passengers.¹ There is no transit hub of this scale anywhere else in northeastern Tokyo.

Against Chiyoda-ku (home to the Imperial Palace) prices, Adachi-ku’s transaction price sits at 30.5%.

Arithmetic check: 4,151万円 ÷ 1億3,629万円 × 100 = 30.5%

Mansion Transaction Prices

¹

※ Cho-mei areas with n<30 excluded. Based on MLIT transaction price data by cho-mei.

Ayase, adjacent to Kita-Senju, commands the highest prices within the ward. Chuo-honcho and Nishiarai-honcho sit in the 3,000万円 tier for 70㎡ — entry-level pricing for the 23 wards with meaningful transit access.

Adachi-ku’s transaction price per ㎡ rose from 47.4万円 in 2021 to 59.3万円 in 2025, a 4-year CAGR of 5.8%.¹

※ All CAGR figures in this series are calculated from 2021–2025 transaction price data.

Rental Rates

²

Risk

Adachi-ku includes low-lying areas between the Arakawa and Sumida rivers. Flood and liquefaction risk are both rated ‘O’ on tile sampling. Western areas near Kita-Senju have more stable ground conditions relative to the eastern portions of the ward, but individual property hazard map checks are essential.

Population forecast 2020→2040: 2.5% — the most positive among the three wards in this episode.⁵

2. Katsushika-ku

Ask most people about 葛飾区 (Katsushika-ku) and you’ll get one reference: 亀有 (Kameari), the setting of the long-running manga Kochira Katsushika-ku Kameari Koen-mae Hashutsujo. That cultural landmark is charming. It also means Katsushika-ku rarely comes up in investment conversations.

The numbers, however, tell a different story.

Katsushika-ku’s 4-year transaction price CAGR is 7.3% — the highest among the three wards in this episode, and competitive across the entire 23-ward series.¹

Against Chiyoda-ku prices, the ward sits at 32.8%.

Arithmetic check: 4,473万円 ÷ 1億3,629万円 × 100 = 32.8%

Mansion Transaction Prices

¹

※ Cho-mei areas with n<30 excluded. Based on MLIT transaction price data by cho-mei.

Shinjuku-cho (a different Shinjuku from the famous ward) stands out on price — JR Sobu Line access appears reflected in the premium. Kameari and Kanamachi have both seen notable appreciation. Kameari connects via JR Joban Line (local), Kanamachi via Keisei Kanamachi Line.

Rental Rates

³

The lowest 1R rental rate among the three wards. This is a reference point for yield estimates, though yield figures here are pre-tax surface return proxies and exclude management fees and vacancy.

Risk

Katsushika-ku also carries flood and liquefaction risk of ‘O’ across tile sampling. The ward borders the Arakawa and Nakagawa rivers with significant low-lying sections. Population forecast 2020→2040: 0.8%, marginal growth.⁵ Transaction volume (582 deals) is the lowest of the three wards — individual transaction price swings may have an outsized effect on ward-level averages.

3. Edogawa-ku

江戸川区 (Edogawa-ku) sits at the far eastern edge of the 23 wards. The ward’s eastern boundary is simultaneously the border with Chiba Prefecture, defined by the Edogawa River. Tokyo’s easternmost ward — the framing of “outer edge” has stuck.

Approached from a residential quality perspective, the picture shifts. The ward has an unusually high proportion of parks and riverside green space relative to its built area. There is a thick layer of family-oriented owner-occupier demand that keeps transaction activity steady.

Against Chiyoda-ku prices, Edogawa-ku sits at 34.8% — the highest of the three wards in this episode.

Arithmetic check: 4,739万円 ÷ 1億3,629万円 × 100 = 34.8%

Mansion Transaction Prices

¹

※ Cho-mei areas with n<30 excluded. Based on MLIT transaction price data by cho-mei.

西葛西 (Nishi-Kasai) has the highest sample count in the ward (n=100). It is a key station on the Tokyo Metro Tozai Line and is well-known for its Indian community. Hirai and Funabori, served by JR Sobu Line and Toei Shinjuku Line respectively, carry higher per-㎡ prices.

Edogawa-ku’s transaction price CAGR over 4 years stands at 5.8%.¹

Rental Rates

⁴

The highest 1R rental rate among the three wards, which compresses yield relative to the purchase price level.

Risk

Edogawa-ku is widely cited as having one of the highest low-lying land ratios among the 23 wards. Both flood and liquefaction risk are rated ‘O’. Tokyo’s hazard maps show significant portions of the ward in designated flood zones. The ward government has been proactive in publicizing hazard maps — which is itself informative.

Population forecast 2020→2040: 1.1% decline — the only declining projection among the three wards.⁵ A relevant long-term demand factor.

4. 3-Ward Comparison Summary

¹²³⁴

Flood risk: based on MLIT tile sampling (tile sample ≠ entire ward). Individual property hazard map checks are essential. Chiyoda-ku figures: MLIT transaction price data, 2025, n=357.

5. Data-Driven Insights

Insight 1: Why is Katsushika-ku’s CAGR 7.3%?

Adachi-ku and Edogawa-ku both recorded 4-year CAGRs of 5.8%. Katsushika-ku came in at 7.3%. Two factors emerge from the data.

First, it started from a lower base. Katsushika-ku’s 2021 price per ㎡ was 48.2万円 — the lowest of the three wards. It was neck-and-neck with Adachi-ku (47.4万円), but by 2025 had climbed to 63.9万円, overtaking Adachi-ku (59.3万円). A classic catch-up dynamic from a compressed starting point.

Second, Kameari and Kanamachi are being repriced. Areas once known only for a manga — Kameari (80.5万円/㎡, n=37), Kanamachi (72.7万円/㎡, n=55) — have driven the ward average higher. Kanamachi in particular appears to be reflecting improved Keisei and JR Joban Line access as it gradually gets priced in.

Insight 2: Adachi-ku’s Structural Position

Adachi-ku holds a 30.5% ratio against Chiyoda-ku — one of the lowest in the 23-ward universe — while simultaneously hosting Kita-Senju, a 501,818-passenger-per-day transit hub. This combination is structurally unusual.

Ordinarily, a ward housing a major transit hub commands a premium over its neighbors. In Adachi-ku, disaster risk (flood and liquefaction both rated O) and ward image act as suppressors of that premium. In other words, if the conditions that create this structural discount were to ease — redevelopment, image rehabilitation — the upside potential could be comparatively large. That judgment, however, must be made property by property.

Insight 3: Edogawa-ku’s Paradox — Highest Price, Declining Population

Edogawa-ku is the most expensive of the three wards relative to Chiyoda-ku (34.8%), while also being the only one with a 1.1% declining population projection through 2040.

The paradox is explained by the composition of its residential demand base. A thick layer of owner-occupier demand — particularly foreign communities centered around Nishi-Kasai, and family households — currently supports pricing. The ward’s 1R rental rate (9.1万円) being the highest of the three wards points to the same dynamic. However, if long-term population decline materializes, liquidity risk could be higher here than in the other two wards.

6. Investment & Relocation Guide

If price is the primary filter

All three wards sit in the 30–35% range relative to Chiyoda-ku, home to the Imperial Palace. This is the lowest price tier in the 23-ward universe. For buyers targeting a 4,000万円 budget within the 23 wards, these three offer the clearest options.

Transit access varies significantly by ward

• Adachi-ku: Five rail lines converge at Kita-Senju (501,818 daily riders), with multi-direction direct access to central Tokyo via JR, Metro, and Tobu networks.
• Katsushika-ku: JR Joban Line, Sobu Line, and Keisei Line provide access nodes. Shin-Koiwa (141,472 daily passengers) provides rapid Sobu Line access to the Ryogoku and Shinjuku corridors.
• Edogawa-ku: The northern area centers around Koiwa (116,612 daily passengers) on the JR Sobu Line, while the central and southern areas rely on the Tozai Line (Nishi-Kasai, Kasai) and Toei Shinjuku Line (Funabori). Direct access toward Nihonbashi and Otemachi.

Disaster risk is a shared challenge across all three

A flood and liquefaction risk rating of ‘O’ from tile sampling does not mean uniform risk across an entire ward. But the underlying geographic reality — low-lying terrain between the Arakawa and Edogawa rivers — is not going to change.

Key checks before any purchase decision:

1. Tokyo Metropolitan Government flood hazard map — designated flood zones, inundation depth
2. Liquefaction prediction map
3. Building completion date (post-1981 new seismic standards or not)

Lower prices exist for structural reasons. Understanding those reasons before choosing is different from not understanding them.

Who should consider which ward?

• Owner-occupiers prioritizing stability → Adachi-ku: direct access to a top-tier transit hub, 2.5% population growth forecast, lowest absolute price of the three
• Capital appreciation focus → Katsushika-ku: 7.3% CAGR, catch-up dynamic from a low base — though liquidity is thinner
• Quality of life first → Edogawa-ku: highest 1R rents (9.1万円), abundant green space, but long-term population decline risk to monitor

Data in this article is drawn from the Ministry of Land, Infrastructure, Transport and Tourism Real Estate Information Library Completed Transaction Price Data (2025 Q1–Q4), SUUMO rental market figures (new construction, within 5-min walk of station), and Tokyo Metropolitan Government population projections. Always conduct individual property inspections and seek professional advice before making investment decisions.