積算100
[Assessed 140.5%] Detached house in Sayama, Saitama — 20 min from Iriso Sta.
Assessed 140.5%Detached houseSayama, SaitamaIriso Sta. 20 min walk

[Assessed 140.5%] Detached house in Sayama, Saitama — 20 min from Iriso Sta.

Published: Sep 26, 2026Updated: Sep 26, 2026

Property Overview

LocationSayama, Saitama
Nearest StationSeibu Shinjuku Line Iriso Sta.
Walk20 min walk
Assessed Ratio140.5%Assessed 140.5%
Price¥3,900,000
TypeDetached house
StructureWooden
BuiltBuilt Oct 1972 (53 years old)
Land Area68.51㎡
Building Area51.33㎡

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.

athome¥3,900,000View listing

Assessed Value Breakdown

Land assessed value¥5,480,800
Building assessed value¥0
Total assessed value¥5,480,800
Asking price¥3,900,000
Assessed ratio140.5%

Calculation basis

  • Land = road price ¥80,000/m² × land area 68.51m²
  • Building = replacement cost ¥220,000/m² × floor area 51.33m² × remaining life 0y ÷ statutory life 22y
  • Built Oct 1972 (53 years old)

Official Road Price Trend (last 3 years)

Cumulative change 2024 → 2026: +1.3%
YearRoad price (JPY/m²)YoY
202479,000—
202579,000±0.0%
202680,000+1.3%

※ Based on inheritance-tax road prices published each July — a reference for the trend in land collateral value.

How We Checked This Property

Because the road-access fields are blank, we located the property on the route price map from the listing's coordinates, and checked all eight listing photos, elevation data and other sites, separating what we could confirm from what remains unconfirmed.

Locating the road price

We located the property on the fiscal 2026 route price map (sheet 34375) by overlaying the listing's coordinates with the road network and terrain map. Oaza Kita-Iriso is a large district without chome subdivisions, so we looked at the local streets around the property (81,000 yen × 2, 80,000 yen × 2, 79,000 yen × 1) and, with 80,000 and 81,000 tied, used the lower 80,000 yen/m² (leasehold ratio D). Over three years the same road went 79,000 → 79,000 → 80,000 yen/m².

View source
Effective land area

The private-road share and setback fields are blank and there is no basis for a deduction, so we valued the full registered 68.51 m². If the front road is narrower than 4 m and a setback is required, or if the path to the door is a flag-lot strip, the land value falls accordingly.

On-site check from photos

We opened all eight listing photos (1 exterior, 1 floor plan, 6 interior). The single exterior photo shows the front door at ground level; the block wall on the right (about 0.8 m) is freestanding with the same ground on both sides, and the low concrete wall on the left is under 1 m. No retaining wall of 1 m or more, stairs or steps are visible. The front road and the rear and side boundaries are not shown, so the direction, width and level difference of the road access, whether it is a flag lot, surrounding retaining walls and whether the house is terraced could not be determined. GSI elevation data shows flat ground of 65.8-66.2 m within 20 m of the listing's coordinates, though the coordinates may be off.

Listing check

In the listing, the road access, private-road share, setback, land category, terrain and remarks fields are all blank. Looking for information to fill in the road access, we checked SUUMO, Yahoo! Real Estate, other agents' listings on athome and Rakumachi's listings, but did not find the same property. A property with a similar building exists in Oaza Minami-Iriso, but its location and land area differ, so it is a different property.

What We Could Not Confirm

  • The road access, private-road share, setback, terrain and remarks fields are all blank. The front road's classification, width and frontage length, and whether the house can be rebuilt, need to be confirmed with the agent.
  • The only exterior photo shows the front door; the front road and boundaries are not shown. Any level difference to the road, whether it is a flag lot, retaining walls around the site and whether the house is terraced need to be confirmed on site or with the agent.
  • The lot number is not disclosed, so the route price is a representative value of the local streets around the listing's coordinates. The value depends on the road the lot actually faces; across the local streets on this map sheet (69,000-83,000 yen/m²) the assessed ratio ranges from about 121% to 146%.
  • The 3,900,000 yen price is below the route-price land value (about 5.48 million yen). The listing does not explain why, and this needs to be confirmed together with the road access and whether rebuilding is allowed.
  • The house is a vacant 54-year-old wooden building built to the pre-1981 seismic code. Its condition, whether repair or demolition is needed and whether there is parking space are not stated in the listing.

※ 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

Welcia Sayama Kita-Iriso

Drugstore in Oaza Kita-Iriso, Sayama, about 480 m in a straight line from the listing's map coordinates to its OpenStreetMap location.

Source
Yaoko (Kita-Iriso)

Supermarket in Oaza Kita-Iriso, Sayama, about 550 m in a straight line from the listing's map coordinates to its OpenStreetMap location.

Source
Lawson Sayama Kita-Iriso

Convenience store in Oaza Kita-Iriso, Sayama, about 610 m in a straight line from the listing's map coordinates to its OpenStreetMap location.

Source

Neighborhood ② Dining Near the Station

Teuchi Soba Jinsaku

Soba restaurant in Irumagawa, Sayama, about 530 m in a straight line from the listing's map coordinates to its OpenStreetMap location.

Source
Hidakaya Sayama Kita-Iriso

Ramen and Chinese restaurant in Irumagawa, Sayama, about 590 m in a straight line from the listing's map coordinates to its OpenStreetMap location.

Source
Coco's Sayama

Family restaurant in Oaza Kita-Iriso, Sayama, about 700 m in a straight line from the listing's map coordinates to its OpenStreetMap location.

Source

About This Property

⚠️ In this listing the fields for road access, private-road share, setback, terrain and remarks are all blank ("-"), so the classification and width of the front road and whether the house can be rebuilt have not been confirmed. The only exterior photo shows the front door and not the road, and we found no listing of the same property on other sites. We present it with road access unconfirmed; anyone considering it should first confirm with the agent the front road's classification, width and frontage length, and whether rebuilding is allowed.

A used detached house in Oaza Kita-Iriso, Sayama (lot number not disclosed), a 20-minute walk from Iriso Station on the Seibu Shinjuku Line. The two-storey wooden 3K house was built in October 1972 (54 years old), before the June 1981 seismic code revision. The freehold land is 68.51 m² (registered area) and the building 51.33 m², in an urbanisation-promotion area zoned Category 1 low-rise residential (50% building coverage, 80% floor area ratio), with public water, sewer and propane gas. It is vacant, handover is negotiable and no parking is mentioned. Measured in a straight line from the listing's map coordinates to OpenStreetMap locations, Welcia Sayama Kita-Iriso drugstore is about 480 m away, a Yaoko supermarket about 550 m and Lawson Sayama Kita-Iriso about 610 m; for dining, Teuchi Soba Jinsaku is about 530 m, Hidakaya Sayama Kita-Iriso about 590 m and Coco's Sayama about 700 m.

The fiscal 2026 inheritance-tax route price, taken as the representative value of the local streets around the property, is 80,000 yen/m², up 1.3% from 79,000 yen in 2024. The land is valued at about 5.48 million yen; the building is past its statutory useful life and counted at zero, giving an assessed ratio of about 140.5%. ⚠️ The 3,900,000 yen price is below the land value based on the area's route price (about 5.48 million yen). Possible reasons include the 54-year-old wooden building built to the pre-1981 seismic code and demolition costs, but the listing does not rule out that the road access makes rebuilding difficult.

What the photos show: the front door is at ground level with a stepping-stone path; the block wall on the right (about 0.8 m) is freestanding with the same ground on both sides, and the low concrete wall on the left is under 1 m. No retaining wall of 1 m or more, stairs or steps are visible. What they do not show: the front road and the rear and side boundaries are not in any photo, so the direction, width and level difference of the road access, whether the path to the door is a flag-lot strip, retaining walls around the site and whether the house is terraced could not be determined. No yield or expected rent is given.

Estimated Financing

Assessed value ¥5,480,800 → estimated loan ¥3,900,000 (100% of the asking price)

※ Actual loan availability, amounts and terms are subject to each bank's screening.

Suggested Lenders

静岡銀行
Regional bankLand-value focusedStrong with detached housesGood with older buildings
本業年収700万円以上が検討対象。 相続税路線価から算出した「土地の積算」が60%以上出ていれば、基本的にフルローンとなる。 修正後バランスシートも重視しており、属性枠だけで終了する訳ではない為、可能な限り「土地」が高積算の物件を買い進めていきたい。
L&Fアセットファイナンス
Non-bank lenderLand-value focusedStrong with detached housesGood with older buildings
土地値が出る築古系が得意。 属性はほぼ問わない。 どんなに担保評価が付いたとしても8割融資が目安。 建物の価値に対してはほぼ担保評価を付けてくれない為、新築や築浅の物件は要注意。 但し、建売の売れ残りや変形地等の場合は、土地が広くて担保評価が伸びたり、賃料が高くて収益還元評価が伸びたりして、思わずハマるケースがある。 また、産休中でも行けた、貴重な存在の金融機関である。
関西みらい銀行
Regional bankAssessed-value focusedStrong with detached houses
土地から新築OK。 築古過ぎず、好立地で積算割合が高く、キャッシュフローが回る物件であれば、検討対象となる。 産休中はNG。 築古過ぎる場合は、信用金庫・信用組合のセゾンファンデックス保証付の不動産担保ローンが適す。

※ General tendencies of lenders covering this area, for information only. This does not guarantee or suggest any specific financing outcome.

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