| Cover | Mar. 06, 2025 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 06, 2025 |
| Entity File Number | 001-37997 |
| Entity Registrant Name | SACHEM CAPITAL CORP. |
| Entity Central Index Key | 0001682220 |
| Entity Tax Identification Number | 81-3467779 |
| Entity Incorporation, State or Country Code | NY |
| Entity Address, Address Line One | 568 East Main Street |
| Entity Address, City or Town | Branford |
| Entity Address, State or Province | CT |
| Entity Address, Postal Zip Code | 06405 |
| City Area Code | 203 |
| Local Phone Number | 433-4736 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Shares, par value $.001 per share |
| Trading Symbol | SACH |
| Security Exchange Name | NYSEAMER |
| Notes 7. 75percent Due 2025 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.75% notes due 2025 |
| Trading Symbol | SCCC |
| Security Exchange Name | NYSEAMER |
| Notes 6. 00percent Due 2026 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 6.00% notes due 2026 |
| Trading Symbol | SCCD |
| Security Exchange Name | NYSEAMER |
| Notes 6. 00percent Due 2027 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 6.00% notes due 2027 |
| Trading Symbol | SCCE |
| Security Exchange Name | NYSEAMER |
| Notes 7. 125 Percent Due 2027 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.125% notes due 2027 |
| Trading Symbol | SCCF |
| Security Exchange Name | NYSEAMER |
| Notes 8. 00percent Due 2027 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 8.00% notes due 2027 |
| Trading Symbol | SCCG |
| Security Exchange Name | NYSEAMER |
| Series A Preferred Stock [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | 7.75% Series A Cumulative Redeemable Preferred Stock, Liquidation Preference $25.00 per share |
| Trading Symbol | SACHPRA |
| Security Exchange Name | NYSEAMER |
