| Document and Entity Information | Oct. 04, 2022 |
| Document and Entity Information [Abstract] | |
| Document Type | 8-K |
| Document Period End Date | Oct. 04, 2022 |
| Entity File Number | 001-39142 |
| Entity Registrant Name | PORCH GROUP, INC. |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 83-2587663 |
| Entity Address, Address Line One | 411 1st Avenue S. |
| Entity Address, Adress Line Two | Suite 501 |
| Entity Address, City or Town | Seattle |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98104 |
| City Area Code | 855 |
| Local Phone Number | 767-2400 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common stock, par value $0.0001 |
| Trading Symbol | PRCH |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Entity Central Index Key | 0001784535 |
| Amendment Flag | false |
