西海市
Data last updated: November 2026 (Land Price Publication 2026, Prefectural Survey 2026, transactions through Q2 2026)
Tap anywhere on the map to get an estimate for that spot. Map: GSI Tiles.
| Avg. residential land price | Now | 1 year | 3 years | 5 years | 10 years |
|---|---|---|---|---|---|
| Forecast Forecast −1.0% a year | ¥8,331/m² | ¥8,245/m² | ¥8,076/m² | ¥7,910/m² | ¥7,510/m² |
Forecasts are projections, not guarantees. 10-year range: ¥6,158/m²–¥8,862/m²
| Item | Assessed value | Market estimate | Area | Per m² (market estimate) |
|---|---|---|---|---|
| Residential land | ¥35.6 billion | ¥50.8 billion | 9.1 km² | ¥5,583/m² |
| Other land farmland, forest, other | ¥8.1 billion | ¥8.1 billion | 143.5 km² | — |
| Buildings wooden ¥27.2 billion · non-wooden ¥27.5 billion | ¥54.7 billion | ¥54.7 billion | 2.7 km² floor | — |
| Total | ¥98.3 billion | ¥113.6 billion |
Market estimate: residential land is assessed at about 70% of official land prices, so its assessed value is divided by 0.7; other land and buildings are shown at assessed value. Tax-exempt land and buildings (roads, parks, etc.) are not included. Source: Ministry of Internal Affairs and Communications, survey of fixed-asset values (FY2025, by municipality), compiled by Fudosan Zukan.
| Area | Avg. residential | Avg. commercial | 1 year | 5 years | Condos per m² | Sales |
|---|---|---|---|---|---|---|
| Seihichoogushigo 西彼町大串郷 |
¥12K/m² | ¥22K/m² | −1.7% | −9.6% | — | 1 |
| Osetochosetokashinourago 大瀬戸町瀬戸樫浦郷 |
¥12K/m² | ¥24K/m² | −1.2% | −9.8% | — | 2 |
| Seihichokomukaego 西彼町小迎郷 |
¥12K/m² | ¥26K/m² | +1.3% | −0.4% | — | 4 |
| Osetochosetohigashihamago 大瀬戸町瀬戸東濱郷 |
¥11K/m² | — | −0.9% | −10.0% | — | — |
| Sakitochokakinourago 崎戸町蠣浦郷 |
¥9,700/m² | — | −2.0% | −9.3% | — | 1 |
| Oshimacho 大島町 |
¥9,495/m² | ¥23K/m² | −1.7% | −9.1% | — | 7 |
| Saikaichoomodakago 西海町面高郷 |
¥6,580/m² | — | −0.6% | −5.6% | — | 4 |
| Osetochoyukinourakamigo 大瀬戸町雪浦上郷 |
¥6,460/m² | — | −0.6% | −4.7% | — | 1 |
| 西彼町中山郷 西彼町中山郷 |
¥6,220/m² | — | −0.6% | −5.3% | — | — |
| Saikaichonanatsugamago 西海町七釜郷 |
¥6,200/m² | — | −0.6% | −5.6% | — | 1 |
| Sakitochohongo 崎戸町本郷 |
¥5,960/m² | — | −1.2% | — | — | — |
| Saikaichokurokuchigo 西海町黒口郷 |
¥5,270/m² | — | −0.6% | −5.4% | — | 2 |
| Saikaichonakauraminamigo 西海町中浦南郷 |
¥4,550/m² | — | −0.4% | −3.6% | — | 2 |
| Sakitochoenoshima 崎戸町江島 |
— | — | — | — | — | 3 |
| Osetochosetonishihamago 大瀬戸町瀬戸西濱郷 |
— | — | — | — | — | 2 |
| Seihichoyagiharago 西彼町八木原郷 |
— | — | — | — | — | 2 |
| Seihichojikibago 西彼町喰場郷 |
— | — | — | — | — | 6 |
| Saikaichootawago 西海町太田和郷 |
— | — | — | — | — | 4 |
| Saikaichonakaurakitago 西海町中浦北郷 |
— | — | — | — | — | 1 |
| Osetochoyukinourashimogo 大瀬戸町雪浦下郷 |
— | — | — | — | — | 1 |
| Osetochoyukinouraokuurago 大瀬戸町雪浦奥浦郷 |
— | — | — | — | — | 3 |
| Saikaichoyokosego 西海町横瀬郷 |
— | — | — | — | — | — |
| Saikaichokobago 西海町木場郷 |
— | — | — | — | — | — |
| Seihichoshimodakego 西彼町下岳郷 |
— | — | — | — | — | 1 |
| Seihichomiyaurago 西彼町宮浦郷 |
— | — | — | — | — | 1 |
| Osetochoyukinourakobutsugo 大瀬戸町雪浦幸物郷 |
— | — | — | — | — | — |
| Seihichoshirosakigo 西彼町白崎郷 |
— | — | — | — | — | — |
| Seihichohirayamago 西彼町平山郷 |
— | — | — | — | — | — |
| Seihichokamidakego 西彼町上岳郷 |
— | — | — | — | — | 1 |
| Saikaichomizunourago 西海町水浦郷 |
— | — | — | — | — | — |
| Osetochosetoshitayamago 大瀬戸町瀬戸下山郷 |
— | — | — | — | — | 1 |
| Saikaichootaharago 西海町太田原郷 |
— | — | — | — | — | 1 |
| Osetochosetofukushimago 大瀬戸町瀬戸福島郷 |
— | — | — | — | — | — |
| Osetochosetoitanourago 大瀬戸町瀬戸板浦郷 |
— | — | — | — | — | — |
| Saikaichoamakubogo 西海町天久保郷 |
— | — | — | — | — | — |
| Osetochomatsushimasotogo 大瀬戸町松島外郷 |
— | — | — | — | — | — |
| Seihichokameurago 西彼町亀浦郷 |
— | — | — | — | — | — |
| Osetochoyukinourakyuragigo 大瀬戸町雪浦久良木郷 |
— | — | — | — | — | — |
| Seihichoshiranitago 西彼町白似田郷 |
— | — | — | — | — | 1 |
| Location | Use | Price per m² | ≈ USD/sq ft | 1 year | Station |
|---|---|---|---|---|---|
| 長崎県 西海市西彼町小迎郷字上珍古原１０２７番１外 Prefectural Survey 2026 |
Commercial | ¥26K/m² | $15/sq ft | +0.8% | 複合商業施設を中心に小売店舗等が建ち並ぶ路線商業地域 |
| 長崎県 西海市大瀬戸町瀬戸樫浦郷字小浦２２７８番２７ Prefectural Survey 2026 |
Commercial | ¥24K/m² | $14/sq ft | −1.7% | 銀行、営業所等が集まる国道沿いの商業地域 |
| 長崎県 西海市大島町字間瀬先１８２７番外 Land Price Publication 2026 |
Commercial | ¥23K/m² | $13/sq ft | −2.6% | 大島郵便局前停 |
| 長崎県 西海市西彼町大串郷字藤ノ尾１９１３番１３外 Prefectural Survey 2026 |
Commercial | ¥22K/m² | $13/sq ft | −1.8% | 国道沿いに小売店舗の連たんする地域 |
| 長崎県 西海市西彼町大串郷字白石谷２６３番６ Prefectural Survey 2026 |
Residential | ¥12K/m² | $7/sq ft | −1.6% | 中小規模一般住宅が点在する国道沿いの住宅地域 |
| 長崎県 西海市大瀬戸町瀬戸樫浦郷字小浦２２６４番１ Prefectural Survey 2026 |
Residential | ¥12K/m² | $7/sq ft | −0.8% | 中小規模の一般住宅が建ち並ぶ市役所に近い既成住宅地域 |
| 長崎県 西海市西彼町小迎郷字川原８３９番７ Prefectural Survey 2026 |
Residential | ¥12K/m² | $7/sq ft | +1.8% | 農家住宅の外、一般住宅が増えつつある住宅地域 |
| 長崎県 西海市大島町字大小島１９３９番５ Prefectural Survey 2026 |
Residential | ¥11K/m² | $6/sq ft | −0.9% | 中規模一般住宅が建ち並ぶ住宅地域 |
| 長崎県 西海市大瀬戸町瀬戸東濱郷字中浜田７５番１ Prefectural Survey 2026 |
Residential | ¥11K/m² | $6/sq ft | −0.9% | 中規模一般住宅が建ち並ぶ既成住宅地域 |
| 長崎県 西海市崎戸町蠣浦郷字網干場１６４６番１３ Land Price Publication 2026 |
Residential | ¥9,700/m² | $6/sq ft | −2.0% | 蛎の浦停 200 m |
| 長崎県 西海市大島町字蛤２９６０番１ Land Price Publication 2026 |
Residential | ¥8,090/m² | $5/sq ft | −1.6% | 蛤停 200 m |
| 長崎県 西海市西海町面高郷字村１４６３番１ Prefectural Survey 2026 |
Residential | ¥6,580/m² | $4/sq ft | −0.6% | 一般住宅、農漁家住宅が混在する住宅地域 |
| 長崎県 西海市大瀬戸町雪浦上郷字下タ小路８８番１外 Prefectural Survey 2026 |
Residential | ¥6,460/m² | $4/sq ft | −0.6% | 農家、一般住宅が混在する住宅地域 |
| 長崎県 西海市西彼町中山郷字野畑８８８番１ Prefectural Survey 2026 |
Residential | ¥6,220/m² | $4/sq ft | −0.6% | 中小規模一般住宅が点在する住宅地域 |
| 長崎県 西海市西海町七釜郷字四釜１８４８番 Prefectural Survey 2026 |
Residential | ¥6,200/m² | $4/sq ft | −0.6% | 一般住宅、農漁家住宅等が混在する住宅地域 |
| 長崎県 西海市崎戸町本郷字村９９６番 Prefectural Survey 2026 |
Residential | ¥5,960/m² | $4/sq ft | −1.2% | 漁家住宅、一般住宅が混在する住宅地域 |
| 長崎県 西海市西海町黒口郷字牛水１９２３番 Prefectural Survey 2026 |
Residential | ¥5,270/m² | $3/sq ft | −0.6% | 農家住宅、漁家住宅が混在する住宅地域 |
| 長崎県 西海市西海町中浦南郷字ミソノ２０３２番２ Prefectural Survey 2026 |
Residential | ¥4,550/m² | $3/sq ft | −0.4% | 農家住宅が見られる既成住宅地域 |
Sales in the loaded period: Land & building 39 · Forest 36 · Farmland 30 · Land 29
| District | Period | Type | Price | Area | Built | Per m² |
|---|---|---|---|---|---|---|
| Seihichokomukaego | Q1 2026 | Land | ¥6.2M | 210 m² | — | ¥29K/m² |
| Saikaichoomodakago | Q1 2026 | Farmland | ¥68K | 125 m² | — | — |
| Saikaichoomodakago | Q1 2026 | Farmland | ¥500K | 185 m² | — | — |
| Osetochosetokashinourago | Q1 2026 | Land & building | ¥6.1M | 360 m² | 1976 | — |
| Oshimacho | Q1 2026 | Forest | ¥100K | 260 m² | — | — |
| Oshimacho | Q1 2026 | Forest | ¥100K | 440 m² | — | — |
| Seihichokomukaego | Q4 2025 | Land & building | ¥37.0M | 185 m² | — | — |
| Saikaichokurokuchigo | Q4 2025 | Farmland | ¥1.5M | 500 m² | — | — |
| Saikaichootawago | Q4 2025 | Forest | ¥170K | 1,700 m² | — | — |
| Saikaichoomodakago | Q4 2025 | Farmland | ¥1.0M | 1,600 m² | — | — |
| Seihichoshiranitago | Q4 2025 | Land | ¥550K | 85 m² | — | ¥6,400/m² |
| Osetochosetonishihamago | Q4 2025 | Land & building | ¥2.3M | 120 m² | 1990 | — |
| Oshimacho | Q4 2025 | Land | ¥500K | 330 m² | — | ¥1,500/m² |
| Oshimacho | Q4 2025 | Land | ¥400K | 210 m² | — | ¥1,900/m² |
| Oshimacho | Q4 2025 | Forest | ¥720K | 1,800 m² | — | — |
| Osetochoyukinourakamigo | Q4 2025 | Farmland | ¥100K | 560 m² | — | — |
| Seihichokomukaego | Q3 2025 | Farmland | ¥920K | 300 m² | — | — |
| Seihichokamidakego | Q3 2025 | Land & building | ¥50.0M | 600 m² | 1983 | — |
| Saikaichonakauraminamigo | Q3 2025 | Forest | ¥180K | 340 m² | — | — |
| Saikaichokurokuchigo | Q3 2025 | Farmland | ¥1.5M | 490 m² | — | — |
Population, income, rent, yield, transport and disaster risk will be added once sourced data is available. Methodology
The average price of residential land in Saikai City is ¥8,331 per m² (about ¥27,540 per tsubo), based on 14 sites in the official land price surveys (2026).
Land prices in Saikai City have fallen by -0.9% on average over the past year. Over five years the change is -7.1%.
The Fudosan Zukan model projects residential land prices to change by -1.0% a year, reaching about ¥7,510 per m² in 10 years (range ¥6,158–¥8,862). Forecasts are projections, not guarantees.
About ¥113.6 billion: land ¥58.9 billion and buildings ¥54.7 billion (estimated from assessed values for fixed-asset tax, FY2025; assessed total ¥98.3 billion).
Land prices are official survey prices (Land Price Publication as of January 1, Prefectural Land Price Survey as of July 1); transactions are MLIT transaction and contract prices. Averages, changes, forecasts and the index are calculated by Fudosan Zukan. All prices in Japanese yen; dollar figures (≈) at ¥157.25 = $1 are for reference. Estimated prices and forecasts on this site are for reference only and do not guarantee actual sale prices or appraisal values. The estimate is not a licensed real estate appraisal; it is an "AI-estimated price" calculated from public land price and transaction statistics. Forecasts are projections, not guarantees.