| Cover | Nov. 10, 2021 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 10, 2021 |
| Entity File Number | 333-237507 |
| Entity Registrant Name | Harbor Custom Development, Inc. |
| Entity Central Index Key | 0001784567 |
| Entity Tax Identification Number | 46-4827436 |
| Entity Incorporation, State or Country Code | WA |
| Entity Address, Address Line One | 11505 Burnham Dr. |
| Entity Address, Address Line Two | Suite 301 |
| Entity Address, City or Town | Gig Harbor |
| Entity Address, State or Province | WA |
| Entity Address, Postal Zip Code | 98332 |
| City Area Code | (253) |
| Local Phone Number | 649-0636 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Common Stock [Member] | |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | HCDI |
| Security Exchange Name | NASDAQ |
| 8.0% Series A Cumulative Convertible Preferred Stock | |
| Title of 12(b) Security | 8.0% Series A Cumulative Convertible Preferred Stock |
| Trading Symbol | HCDIP |
| Security Exchange Name | NASDAQ |
| Warrants | |
| Title of 12(b) Security | Warrants |
| Trading Symbol | HCDIW |
| Security Exchange Name | NASDAQ |
| Warrant [Member] | |
| Title of 12(b) Security | Warrants |
| Trading Symbol | HCDIZ |
| Security Exchange Name | NASDAQ |
