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Business Combination - Additional Information (Details) - USD ($) |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 01, 2021 | Sep. 30, 2021 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |  |  |
Proceeds from Business Combination | $ 284,000,000.0 |  | $ 284,011,000 |  |
Business combination transaction cost | 51,200,000 |  |  |  |
Repayment of debt |  |  | $ 63,400 |  |
Supernova's Trust and Operating Accounts |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Proceeds from Business Combination | 34,000,000.0 |  |  |  |
Secured Term Loan | First American Title Insurance Company |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Repayment of debt | 55,800,000 |  |  |  |
Term Loan |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Repayment of debt | 3,800,000 |  |  |  |
Notes Payable - Related Parties |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Repayment of debt | 2,500,000 |  |  |  |
Notes Payable - Other |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Repayment of debt | 1,300,000 |  |  |  |
Forward Purchase Agreements |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Proceeds from Business Combination | 50,000,000.0 |  |  |  |
PIPE Investment |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Proceeds from Business Combination | $ 200,000,000.0 |  |  |  |
Supernova | Forward Purchase Agreements |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Warrants issued in business combination | 1,666,667 |  |  |  |
Business combination, Equity interest in acquiree, Description | an aggregate of 5,000,000 shares of Offerpad Solutions Class A common stock and an aggregate of 1,666,667 warrants to purchase one share of Offerpad Solutions Class A common stock, for an aggregate purchase price of $50,000,000, or $10.00 per share of Offerpad Solutions Class A common stock and one-third of one warrant to purchase one share of Offerpad Solutions Class A common stock (“Forward Purchase Agreements”). |  |  |  |
Class A Common Stock | Supernova | Forward Purchase Agreements |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Stock issued in business combination, Shares | 5,000,000 |  |  |  |
Stock issued price per share in business combination | $ 10.00 |  |  |  |
Stock issued in business combination, Value | $ 50,000,000 |  |  |  |
Class A Common Stock | Supernova | PIPE Investment |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Stock issued in business combination, Shares | 20,000,000 |  |  |  |
Stock issued price per share in business combination | $ 10.00 |  |  |  |
Stock issued in business combination, Value | $ 200,000,000.0 |  |  |  |
Old Offerpad and Supernova |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Conversion of stock, shares converted | 7,533 |  |  |  |
Common stock voting rights | 10 votes per | 10 votes per share |  |  |
Old Offerpad and Supernova | Class B Common Stock | Minimum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Percentage of common stock transferred | 75.00% |  | 75.00% |  |

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