Description of Business (Details)	9 Months Ended	12 Months Ended
Sep. 30, 2023	Dec. 31, 2022 shares
Description of Business (Details) [Line Items]
Number of segments	4	2
Product offerings	3
SGB Development Corp. [Member] \| IPO [Member]
Description of Business (Details) [Line Items]
Ownership percentage		100.00%
Separate publicly		2
Distribution date		Sep. 27, 2023
Pro rata distribution rate		30.00%
Number of shares to be distributed to each stockholder of the parent		0.930886
Basic number of shares held by each stockholder of the parent was calculated for distribution (in Shares)		5
Sale of stock, Record date for the distribution		Sep. 08, 2023
Percentage of ownership after separation		70.00%
Sale of stock, listing date		Sep. 28, 2023
Sale of stock, Trading symbol of subsidiary		SGD

No definition available.

Name:	sgbx_DescriptionofBusinessDetailsLineItems
Namespace Prefix:	sgbx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of core product offerings that utilize the reporting entity's technology and engineering expertise.

+ References

No definition available.

+ Details

Name:	sgbx_NumberOfCoreProductOfferings
Namespace Prefix:	sgbx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The basic number of shares held by each stockholder of the parent was calculated for the distribution of the subsidiary's shares on a stock transaction.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockBasicNumberOfSharesHeldByEachStockholderOfParentWasCalculatedForDistribution
Namespace Prefix:	sgbx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Definition

The date on which the subsidiary's securities are listed on an exchange, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockListingDate
Namespace Prefix:	sgbx_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of publicly traded companies listed on an exchange after separation.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockNumberOfPubliclyTradedCompaniesAfterSeparation
Namespace Prefix:	sgbx_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

The nominal number of subsidiary's shares to be distributed to each stockholder of the parent company on a stock transaction.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockNumberOfSharesToBeDistributedToEachStockholderOfParent
Namespace Prefix:	sgbx_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of shares issued or sold by the subsidiary in a stock transaction.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockPercentageOfOwnershipSharesSoldOnTransaction
Namespace Prefix:	sgbx_
Data Type:	dtr:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The record date for the distribution of a subsidiary's shares to the stockholders of the parent entity, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockRecordDateForDistribution
Namespace Prefix:	sgbx_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

The subsidiary's trading symbol of an instrument as listed on an exchange.

+ References

No definition available.

+ Details

Name:	sgbx_SaleOfStockTradingSymbolOfSubsidiary
Namespace Prefix:	sgbx_
Data Type:	xbrli:normalizedStringItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-18

+ Details

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company after stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPercentageOfOwnershipAfterTransaction
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of subsidiary's or equity investee's stock owned by parent company before stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPercentageOfOwnershipBeforeTransaction
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the subsidiary or equity investee issued or sold stock, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockTransactionDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

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