![[Assessed 85.6%] Detached house in Kawaguchi, Saitama — 14 min from Nishi-Kawaguchi Sta.](https://img01.suumo.com/jj/resizeImage?src=gazo%2Fbukken%2F030%2FN010000%2Fimg%2F742%2F21441742%2F21441742_2163.jpg&w=1600&h=1200)
[Assessed 85.6%] Detached house in Kawaguchi, Saitama — 14 min from Nishi-Kawaguchi Sta.
Property Overview
| Location | Kawaguchi, Saitama |
| Nearest Station | JR Keihin-Tohoku Line Nishi-Kawaguchi Sta. |
| Walk | 14 min walk |
| Assessed Ratio | 85.6%Assessed 85.6% |
| Price | ¥47,800,000 |
| Type | Detached house |
| Structure | Wooden |
| Built | Built Aug 2026 (0 years old) |
| Land Area | 60.99㎡ |
| Building Area | 108.06㎡ |
Where This Property Is Listed
This property appears on the sites below. Listings matching on location, land area and building area are merged into a single article as the same property.
| SUUMO | ¥47,800,000LowestView listing |
| athome | ¥47,800,000LowestView listing |
| Kenbiya | ¥49,800,000View listing |
※ Listed prices differ between sites — a price cut may not be reflected everywhere yet. The lowest listed price is used as the price in this article.
Assessed Value Breakdown
| Land assessed value | ¥17,121,600 |
| Building assessed value | ¥23,773,200 |
| Total assessed value | ¥40,894,800 |
| Asking price | ¥47,800,000 |
| Assessed ratio | 85.6% |
Calculation basis
- Land assessed value was entered manually by the operator.
- Building = replacement cost ¥220,000/m² × floor area 108.06m² × remaining life 22y ÷ statutory life 22y
- Built Aug 2026 (0 years old)
Official Road Price Trend (last 3 years)
Cumulative change 2024 → 2026: +11.5%| Year | Road price (JPY/m²) | YoY |
|---|---|---|
| 2024 | 260,000 | — |
| 2025 | 280,000 | +7.7% |
| 2026 | 290,000 | +3.6% |
※ Based on inheritance-tax road prices published each July — a reference for the trend in land collateral value.
How We Checked This Property
Rather than republishing the listing as is, we counted the local streets of Nishiaoki 4-chome on the FY2026 route price map and cross-checked the figures in the SUUMO, at home and Kenbiya listings against site photos and the plot plan to confirm the assumptions on area, number of storeys and price.
What We Could Not Confirm
- The 108.06 m² floor area includes a built-in garage of about 14.07 m² on the ground floor. Valuing the building without the garage gives an assessed ratio of about 79.08%, below 80%.
- The listing does not explain what the separately excluded 1.95 m² is (corner cut-off, road setback, etc.), and we could not confirm it.
- The designated road on the west that the house directly faces has no route price, so we used the most common local street value in the district, ¥290,000/m². The municipal road to the north of the development appears to be on a ¥295,000/m² route.
- No yield or expected rent is listed. Rent levels would need to be checked separately if the house is to be let.
※ Rather than reproducing the listing as-is, we verified the figures against public sources such as the official road price maps and the listing photos. This is not based on a site visit, so please confirm on site and with the seller before deciding.
Neighborhood ① Shopping Near the Station
Neighborhood ② Dining Near the Station
About This Property
A newly built three-storey wooden detached house completed in August 2026 in Nishiaoki 4-chome, Kawaguchi (house No. 2 of a two-house development; No. 1 is shown as sold). The nearest station is Nishi-Kawaguchi on the JR Keihin-Tohoku Line; listings give a 12- or 14-minute walk, and we use the longer 14 minutes. The assessed ratio is about 85.55%. ⚠️ The 108.06 m² floor area includes a built-in garage of about 14.07 m² on the ground floor (about 13% of the floor area); valuing the building without the garage gives about 79.08%, below 80%.
The land is 60.99 m² freehold. One agent's listing notes a separately excluded portion of 1.95 m², so we valued 59.04 m² after deducting it (without the deduction the ratio would be about 86.74%). There is also a private road portion of 13.25 m² that is not included in the land area. The site faces a 4 m designated private road on the west with a frontage of about 8.2 m, and the development as a whole also faces an 8 m municipal road to the north. Zoning is Category 1 Residential (60% coverage, 200% floor area ratio, effectively 160% due to road width), in a quasi-fire prevention district and a designated land development regulation area.
The house has 108.06 m² of floor area with 3LDK plus a service room (17.4-tatami LDK). The Kenbiya listing says two storeys and not yet completed, but the floor plans show three storeys and photos on other sites show it finished, so we treat it as a completed three-storey new build. We use the lowest asking price among the listings, ¥47.8 million (SUUMO and at home); at the Kenbiya price of ¥49.8 million the ratio would be about 82.12%. As a new build, the building accounts for about 50% of the price in the assessment.
For the route price we used ¥290,000/m², the most common value on the local streets of Nishiaoki 4-chome; the same route rose from ¥260,000 (2024) to ¥280,000 (2025) and ¥290,000/m² (2026), about 11.5% over two years (leasehold ratio D). The designated road the house directly faces has no route price of its own. Photos show the site level with the road, with only block walls on the neighbouring boundaries and no retaining wall or steps, in a flat low-lying area about 2.7 m above sea level. No yield is listed; whether for owner occupation or rental, the high share of building value in a new build should be taken into account.
Estimated Financing
Suggested Lenders
※ General tendencies of lenders covering this area, for information only. This does not guarantee or suggest any specific financing outcome.
Learn About Assessed Value and Financing
Our blog explains the basics you need to read the numbers on this page.
不動産担保ローンとは？手持ちの不動産で次の物件を買う方法
不動産担保ローンは、持っている不動産を担保にお金を借りるローンです。仕組みや借りられる金額の目安、次の物件購入に使う方法、メリット・デメリットを解説します。
積算評価・担保評価とは？計算方法と調べ方をわかりやすく解説
積算評価（担保評価）とは、銀行が物件の担保価値を土地と建物から計算する方法です。計算式・再調達価格・法定耐用年数の目安、路線価を使った調べ方、融資が付きやすい物件の特徴を計算例つきで解説します。
More in This Area
[Assessed 94.1%] Detached house in Tokorozawa, Saitama — 8 min from Nishi-Tokorozawa Sta.
