Accounts Receivable

9 Months Ended

Sep. 30, 2021

4.	Accounts Receivable

At September 30, 2021 and December 31, 2020, the Company’s accounts receivable consisted of the following:

	2021			2020
Billed:
Construction services	$	3,066,890		$	1,391,555
Engineering services		34,919			86,264
Medical revenue		408,619			1,157,819
Retainage receivable		615,136			615,136
Other receivable		398,168			180,748
Total gross receivables		4,523,732			3,431,522
Less: allowance for credit losses		(957,116	)		(795,914	)
Total net receivables	$	3,566,616		$	2,635,608

Receivables are evaluated for collectability and allowances for potential losses are established or maintained on applicable receivables. The allowance for credit losses was $957,116 and $795,914 as of September 30, 2021 and December 31, 2020, respectively. There was a provision of $161,202 for credit losses, no recoveries collected for credit losses and no write offs during the nine months ended September 30, 2021.There was a provision for credit losses of $10,018, and no write offs for the year ended December 31, 2020.