| Cover | Dec. 23, 2020 |
| Entity Addresses [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 23, 2020 |
| Entity File Number | 001-39142 |
| Entity Registrant Name | PORCH GROUP, INC. |
| Entity Central Index Key | 0001784535 |
| Entity Tax Identification Number | 90-0781625 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 2200 1st Avenue S. |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98134 |
| City Area Code | (206) |
| Local Phone Number | 947-2472 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Common stock, par value $0.0001 | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Common stock, par value $0.0001 |
| Trading Symbol | PRCH |
| Security Exchange Name | NASDAQ |
| Warrants, each exercisable for one share of common stock at an exercise price of $11.50 per share | |
| Entity Addresses [Line Items] | |
| Title of 12(b) Security | Warrants, each exercisable for one share of common stock at an exercise price of $11.50 per share |
| Trading Symbol | PRCHW |
| Security Exchange Name | NASDAQ |
| Former Address [Member] | |
| Entity Addresses [Line Items] | |
| Entity Address, Address Line One | PropTech Acquisition Corporation |
| Entity Address, Address Line Two | 3415 N. Pines Way |
| Entity Address, Address Line Three | Suite 204 |
| Entity Address, City or Town | Wilson |
| Entity Address, State or Province | WY |
| Entity Address, Postal Zip Code | 83014 |
