西新井（西区）
Data last updated: November 2026 (Land Price Publication 2026, Prefectural Survey 2026, transactions through Q2 2026)
| Area | Avg. residential | ≈ USD/sq ft | Oaza Nishiarai, Nishi Ward, Saitama City is | 1 year | 5 years | Condos per m² | Index |
|---|---|---|---|---|---|---|---|
| Oaza Nishiarai, Nishi Ward, Saitama City | — | — | — | — | — | — | |
| Nishi Ward, Saitama City | ¥119K/m² | $70/sq ft | +2.2% | +9.9% | ¥153K/m² | 74 | |
| Saitama City | ¥236K/m² | $138/sq ft | +3.5% | +14.9% | ¥538K/m² | — | |
| Saitama | ¥142K/m² | $83/sq ft | +2.1% | +8.7% | ¥333K/m² | 83 | |
| Japan | ¥120K/m² | $70/sq ft | +2.1% | +8.0% | ¥493K/m² | — |
Sales in the loaded period: Land & building 3 · Land 2
| District | Period | Type | Price | Area | Built | Per m² |
|---|---|---|---|---|---|---|
| Oaza Nishiarai | Q2 2026 | Land & building | ¥3.4M | 125 m² | 1969 | — |
| Oaza Nishiarai | Q1 2026 | Land & building | ¥38.0M | 280 m² | 2026 | — |
| Oaza Nishiarai | Q1 2026 | Land | ¥15.0M | 250 m² | — | ¥58K/m² |
| Oaza Nishiarai | Q2 2025 | Land | ¥4.0M | 100 m² | — | ¥40K/m² |
| Oaza Nishiarai | Q2 2025 | Land & building | ¥33.0M | 170 m² | 2017 | — |
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 ¥158.46 = $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.