Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2020	Aug. 13, 2020
Document and Entity Information
Document Type	10-Q
Document Period End Date	Jun. 30, 2020
Entity Registrant Name	SANDSTON CORP
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	true
Trading Symbol	SDON
Entity Common Stock, Shares Outstanding		17,451,600
Entity Central Index Key	0000892832
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31