Prices as of 2026/10/30 close
Company comparison · Detached-Home Builders
Iida Group is the largest by revenue at ¥1.5T, followed by Open House (¥1.3T), KI Star (¥393.9B) and Tama Home (¥197.7B).
Open House has the highest operating margin at 10.9%, 9.0 points above the lowest, Tama Home (1.9%).
Revenue growth in the latest results: KI Star +15.0%, Iida Group +3.4%, Open House +3.1%, Tama Home −1.5%. For next year, Tama Home guides for the fastest operating profit growth (+95.2%).
Open House pays the most on average (¥9.14M), ¥3.97M more than KI Star (¥5.17M).
Over the past year the shares moved KI Star +17.4%, Open House +4.7%, Iida Group −10.2%, Tama Home −26.7%.
Head-to-head wins16 metrics
One win per metric for the company with the best value. Metrics with no better or worse (P/E, average age, employees) are excluded.
ScaleInvestors
Open House aheadIida Group 1 : Open House 2 : KI Star 0 : Tama Home 0
Revenue: Iida Group ¥1.5T / Open House ¥1.3T / KI Star ¥393.9B / Tama Home ¥197.7B
ProfitabilityInvestors
Open House aheadIida Group 1 : Open House 2 : KI Star 0 : Tama Home 0
Operating margin: Iida Group 6.3% / Open House 10.9% / KI Star 6.9% / Tama Home 1.9%
GrowthInvestors
KI Star aheadIida Group 0 : Open House 0 : KI Star 3 : Tama Home 2
Revenue growth (YoY): Iida Group +3.4% / Open House +3.1% / KI Star +15.0% / Tama Home −1.5%
Stock & balance sheetInvestors
EvenIida Group 1 : Open House 0 : KI Star 1 : Tama Home 0
Share price, 1 year: Iida Group −10.2% / Open House +4.7% / KI Star +17.4% / Tama Home −26.7%
Pay & workforceJob seekers
Open House aheadIida Group 0 : Open House 2 : KI Star 0 : Tama Home 1
Average salary: Iida Group ¥7.55M / Open House ¥9.14M / KI Star ¥5.17M / Tama Home ¥7.17M
| Metric | Iida Group | Open House | KI Star | Tama Home |
|---|---|---|---|---|
| Revenue | ◎¥1.5T | ¥1.3T | ¥393.9B | ¥197.7B |
| Operating profit | ¥94.4B | ◎¥145.9B | ¥27.0B | ¥3.8B |
| Net income | ¥63.3B | ◎¥100.7B | ¥15.4B | ¥1.2B |
| Metric | Iida Group | Open House | KI Star | Tama Home |
|---|---|---|---|---|
| Operating margin | 6.3% | ◎10.9% | 6.9% | 1.9% |
| Net margin | 4.2% | ◎7.5% | 3.9% | 0.6% |
| ROE | — | 20.1% | — | — |
| Revenue per employee | ◎¥12.7B | ¥4.4B | ¥271M | ¥63M |
| Metric | Iida Group | Open House | KI Star | Tama Home |
|---|---|---|---|---|
| Revenue growth (YoY) | +3.4% | +3.1% | ◎+15.0% | −1.5% |
| Operating profit growth (YoY) | +17.4% | +22.5% | ◎+56.4% | −6.6% |
| Revenue CAGRlast 5 years | +0.7% | +13.3% | ◎+20.4% | −1.9% |
| Guidance: revenue growthnext FY plan | +10.2% | +11.1% | +14.2% | ◎+16.3% |
| Guidance: op. profit growthnext FY plan | +9.7% | +16.5% | +16.7% | ◎+95.2% |
| Metric | Iida Group | Open House | KI Star | Tama Home |
|---|---|---|---|---|
| Share price, 1 year | −10.2% | +4.7% | ◎+17.4% | −26.7% |
| Share price, 3 months | ◎−10.3% | −11.0% | −14.2% | −14.1% |
| P/E (trailing)lower = cheaper | — | 8.8x | — | — |
| Equity ratio | — | 38.2% | — | — |
| Share price (close) | ¥2,097.5 | ¥7,719 | ¥3,070 | ¥2,650 |
◎ marks the best value for each metric. Revenue and profit are from the latest full-year earnings release; share prices are closing-price references; P/E = latest close ÷ trailing EPS. For banks and some other financials, revenue means ordinary income.
| Metric | Iida Group | Open House | KI Star | Tama Home |
|---|---|---|---|---|
| Average salary | ¥7.55M | ◎¥9.14M | ¥5.17M | ¥7.17M |
| Starting salary (monthly) | ¥270,000 | ◎¥360,000 | ¥230,000 | ¥210,000 |
| Average tenure | 4.5 yrs | 4.5 yrs | 3.9 yrs | ◎8.5 yrs |
| Average age | 44.6 | 34.7 | 32.3 | 41.3 |
| Employees | 119 | 307 | 1,456 | 3,126 |
Average salary is for the reporting (parent) company and is affected by average age and job mix. Holding companies with few employees are left out of the salary comparison.
Close (Oct 30, 2026)
¥2,097.5-10.2% (1Y)
Iida Group -10.2% over 1Y. Compared: Open House +4.7%, KI Star +17.4%, Tama Home -26.7%.
Reference chart of daily closing prices, not real-time quotes (split-adjusted; weekly closes before the last year). Each line shows the % change from the start of the period. Updated Oct 30, 2026.
Iida Group6 segments
Open House5 segments
KI Star3 segments
Tama Home4 segments
AAverage annual salary from the securities filings: Open House ¥9.14M, Iida Group ¥7.55M, Tama Home ¥7.17M, KI Star ¥5.17M. Open House pays the most. Averages also depend on staff age and job mix, so check the average age too (Iida Group 44.6, Open House 34.7, KI Star 32.3, Tama Home 41.3).
ARevenue in the latest results: Iida Group ¥1.5T, Open House ¥1.3T, KI Star ¥393.9B, Tama Home ¥197.7B. Iida Group is the largest by revenue at ¥1.5T, followed by Open House (¥1.3T), KI Star (¥393.9B) and Tama Home (¥197.7B).
AOperating margins: Open House 10.9%, KI Star 6.9%, Iida Group 6.3%, Tama Home 1.9%. Open House turns the highest share of sales into operating profit.
AShare price change over the past year (closing prices, for reference): KI Star +17.4%, Open House +4.7%, Iida Group −10.2%, Tama Home −26.7%. KI Star has risen the most.
Comparing 4 companies (up to 4)
Sources: earnings releases (kessan tanshin), annual securities reports and other public information. Share prices are closing-price references, not real-time. Our data may contain errors; investment decisions are your own responsibility.
