The maximum period for event of a full review for Resale Registration Statement declared effective by regulator agency.

No definition available.

Name:	sgbx_MaximumPeriodForEventOfFullReviewForResaleRegistrationStatementDeclaredEffectiveByRegulatorAgency
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum period for hold a special or annual meeting of shareholders.

+ References

No definition available.

+ Details

Name:	sgbx_MaximumPeriodForHoldSpecialOrAnnualMeetingOfShareholders
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum period for filing of registration statement.

+ References

No definition available.

+ Details

Name:	sgbx_MaximumPeriodForRegistrationStatementFiling
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum period for Resale Registration Statement declared effective by regulator agency.

+ References

No definition available.

+ Details

Name:	sgbx_MaximumPeriodForResaleRegistrationStatementDeclaredEffectiveByRegulatorAgency
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The minimum period for not to effect or agree to effect any Variable Rate Transaction.

+ References

No definition available.

+ Details

Name:	sgbx_MinimumPeriodForNotToEffectOrAgreeToEffectAnyVariableRateTransaction
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The minimum period for not to issue any shares of Common Stock or Common Stock equivalents or to file any other registration statement with regulator agency.

+ References

No definition available.

+ Details

Name:	sgbx_MinimumPeriodForNotToIssueAnySharesOfCommonStockOrCommonStockEquivalentsOrToFileAnyOtherRegistrationStatementWithRegulatorAgency
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of common stock issued upon exercise of the existing warrants under the warrant agreement.

+ References

No definition available.

+ Details

Name:	sgbx_PercentageOfCommonStockIssuedUponExerciseOfExistingWarrants
Namespace Prefix:	sgbx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of proceeds from exercise of warrants for estimation of cash fee under the warrant agreement.

+ References

No definition available.

+ Details

Name:	sgbx_PercentageOfProceedsFromExerciseOfWarrants
Namespace Prefix:	sgbx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The period of interval for hold a meeting of shareholders to seek Stockholder Approval until the earlier of the date Stockholder Approval is obtained.

+ References

No definition available.

+ Details

Name:	sgbx_PeriodOfIntervalForHoldMeetingOfShareholdersToSeekStockholderApprovalUntilEarlierOfDateStockholderApprovalIsObtained
Namespace Prefix:	sgbx_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of shares issued during the period related to Restricted Stock Units, net of any shares forfeited.

+ References

No definition available.

+ Details

Name:	sgbx_StockIssuedDuringPeriodSharesRestrictedStockUnitsNetOfForfeitures
Namespace Prefix:	sgbx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-3

+ Details

Name:	us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of assets pledged to secure a debt instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-3

+ Details

Name:	us-gaap_DebtInstrumentCollateralAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480848/942-470-50-3

+ Details

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

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

+ Details

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

- Definition

Expense related to distribution, servicing and underwriting fees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.14)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483589/942-220-S99-1

+ Details

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

- Definition

Proceeds from securitizations of receivables treated as collateralized borrowings, which are classified as financing transactions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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

- Definition

The cash inflow associated with the amount received from holders exercising their stock warrants.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 14
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-14

+ Details

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

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481372/852-10-55-10

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(16)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(13))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19)(a))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_ShortTermBorrowings
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

+ Details

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

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	sgbx_StockSplitStatusAxis=sgbx_ReverseStockSplitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	sgbx_StockSplitStatusAxis=sgbx_BeforeAdjustmentOfReverseStockSplitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=sgbx_CashAdvanceAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=sgbx_SgBuildingBlocksIncAndSgEchoLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=sgbx_BridgecapAdvanceLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_WarrantMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	sgbx_AgreementAxis=sgbx_WarrantInducementAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=sgbx_HolderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_CounterpartyNameAxis=sgbx_MaximGroupLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Subsequent Events (Details - Textuals 4) - USD ($)				2 Months Ended
Subsequent Events (Details - Textuals 4) - USD ($)	Mar. 12, 2024	Mar. 08, 2024	Feb. 23, 2024	Feb. 29, 2024	Dec. 31, 2023	Dec. 31, 2022
Subsequent Events
Common stock, par value					$ 0.01	$ 0.01
Subsequent Event [Member] \| Reverse Stock Split in May 2024 [Member]
Subsequent Events
Issuance of restricted stock units for prior vested shares, Shares				38,934
Subsequent Event [Member] \| Before Adjustment of Reverse Stock Split [Member]
Subsequent Events
Issuance of restricted stock units for prior vested shares, Shares				778,681
Subsequent Event [Member] \| Cash Advance Agreement [Member] \| SG Building Blocks, Inc. and SG Echo, LLC [Member] \| Bridgecap Advance LLC (“Bridgecap”) [Member]
Subsequent Events
Debt Instrument, Collateral Amount			$ 224,850
Cash advance debt due			150,000
Cash advance debt less underwriting fees and expenses paid, for net funds provided			135,000
Debt Instrument, Periodic Payment			$ 2,248.5
Debt Instrument, Frequency of Periodic Payment			day
Subsequent Event [Member] \| Warrants [Member] \| Warrant Inducement Agreement [Member] \| Holder [Member] \| Private Placement Offering (the “Offering”) [Member]
Subsequent Events
Common stock, par value		$ 0.01
Number of shares of common stock for conversion upon warrants	3,797,260	1,898,630
Exercise Price of Warrants		$ 0.2603
Proceeds from the exercise of warrants		$ 494,213
Percentage of common stock issued upon exercise of the existing warrants	200.00%
Minimum period for not to issue any shares of Common Stock or Common Stock equivalents or to file any other registration statement with regulator agency		30 days
Minimum period for not to effect or agree to effect any Variable Rate Transaction		60 days
Maximum period for registration statement filing	30 days
Maximum period for Resale Registration Statement declared effective by regulator agency	60 days
Maximum period for event of a full review for Resale Registration Statement declared effective by regulator agency	90 days
Maximum period for hold a special or annual meeting of shareholders	60 days
Period of interval for hold a meeting of shareholders to seek Stockholder Approval until the earlier of the date Stockholder Approval is obtained	90 days
Subsequent Event [Member] \| Warrants [Member] \| Warrant Inducement Agreement [Member] \| Holder [Member] \| Private Placement Offering (the “Offering”) [Member] \| Before Adjustment of Reverse Stock Split [Member]
Subsequent Events
Number of shares of common stock for conversion upon warrants	189,863	94,932
Exercise Price of Warrants		$ 5.206
Subsequent Event [Member] \| Warrants [Member] \| Warrant Inducement Agreement [Member] \| Maxim Group LLC (“Maxim”) [Member] \| Private Placement Offering (the “Offering”) [Member]
Subsequent Events
Percentage of proceeds from exercise of warrants	7.00%
Payment of legal fees and other out-of-pocket expenses	$ 10,000