Summary of significant accounting policies - Inventories and Cost of Sales (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Inventories and Cost of Sales
Developed lots included in inventory	$ 21,189,983	$ 16,205,448	$ 17,025,273
Developed lots purchased at fair value from third parties	15,815,143	10,052,179	9,445,580
Homes under construction	88,872,575	141,863,561	110,224,757
Finished homes	$ 40,078,317	$ 22,133,926	$ 12,775,442

The portion of the carrying amount of land held for development and sale that was acquired by purchase and is recorded at fair value.

No definition available.

+ Details

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Namespace Prefix:	uhg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The carrying amount as of the balance sheet date of homes that have been finished and are ready for sale, net of valuation allowance and impairment loss.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(6)(a))
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of capitalized construction costs of homes for future sale.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Carrying amount net of impairment reserves as of the balance sheet date primarily consisting of deposits for land purchases (including option payments), related acquisition costs, and land which is not expected to be developed in the next two years.

+ References

+ Details

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

- References

No definition available.

+ Details

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