Note Payable D and O Insurance.

No definition available.

Name:	HCDI_NotePayableDAndOInsurance
Namespace Prefix:	HCDI_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The average effective interest rate during the reporting period.

+ References

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+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Interest and debt related expenses associated with nonoperating financing activities of the entity.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of cash outflow for payment of premium on corporate-owned life insurance policy, classified as investing activities. Includes, but is not limited to, bank-owned life insurance policy.

+ References

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	us-gaap_RelatedPartyTransactionAxis=HCDI_DandOInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

NOTE PAYABLE D&O INSURANCE (Details Narrative) - USD ($)		3 Months Ended		6 Months Ended
	Aug. 28, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Related Party Transaction [Line Items]
Note Payable D&O Insurance		$ (0)		$ (0)		$ 741,200
Dand O Insurance [Member]
Related Party Transaction [Line Items]
Payment to acquire insurance	$ 1,531,900			1,225,500
Down payment for insurance	$ 306,400
Debt instrument term	10 years
Debt instrument interest rate	4.74%
Interest and debt expense		$ 3,000	$ 0	$ 10,300	$ 0