O'Connor and Associates O'Connor and Associates is a property tax consulting firm that provides residential property tax reduction services. | ![]() Great Portland Estates Great Portland Estates plc is a British property development and investment company. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index. | ![]() Real Estate Investors Real Estate Investors (REI) is a publicly quoted property investment company with interests in commercial & residential properties across the UK. | Rock Companies Rock Companies is a diversified real estate management company that focuses on property development and construction, property management and capital investments and finance. | ||
Founding Date | Founding Date 1974 | Founding Date 1959 | Founding Date 2004 | Founding Date 1991 | Founding Date 1996 |
Type | Type Private | Type Public | Type Public | Type Private | Type Public |
Tags | |||||
Locations | Locations Hoffman Estates, US HQ | Locations London, GB HQ | Locations Birmingham, GB HQ Southampton, GB West Bromwich, GB | Locations HQ | Locations Langfang Shi, CN HQ |
Employees | Employees 385 | Employees 954% increase | Employees 7 | Employees 412% decrease | Employees N/A |
Valuation ($) | Valuation ($) N/A | Valuation ($) 2.4 b | Valuation ($) 77.1 m | Valuation ($) N/A | Valuation ($) N/A |
Financial | |||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) £117.9m (FY, 2026) | Revenue (est.) £9.4m (FY, 2025) | Revenue (est.) N/A | Revenue (est.) N/A |
Cost of goods | Cost of goods N/A | Cost of goods £49.3m (FY, 2026) | Cost of goods £2.2m (FY, 2025) | Cost of goods N/A | Cost of goods N/A |
Gross profit | Gross profit N/A | Gross profit £68.6m (FY, 2026) | Gross profit £7.2m (FY, 2025) | Gross profit N/A | Gross profit N/A |
Net income | Net income N/A | Net income £154.5m (FY, 2026) | Net income (£839k) (FY, 2025) | Net income N/A | Net income N/A |

Great Portland Estates plc is a British property development and investment company. It is listed on the London Stock Exchange and is a constituent of the FTSE 250 Index.
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Real Estate Investors (REI) is a publicly quoted property investment company with interests in commercial & residential properties across the UK.
View companyRock Companies is a diversified real estate management company that focuses on property development and construction, property management and capital investments and finance.
View companyRongsheng Development is a provider of real estate services.
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