It occurred between 9.30am and 2.30pm on Sunday 22 June 2014, at a house on Hookstone Chase.
The thieves stole around £100 in cash and dress jewellery.
Sometime between 9.30am and 10am, the same day, a woman who said she was a door to door salesperson, spoke to the householder for a short time.
She is described as being white, aged in her late twenties or early thirties and having a large build. She was wearing white leggings and vest top, and was carrying a clipboard.
Detective Constable Dan Ridgeway, of Harrogate CID, said: If you were the woman who was in the Hookstone Chase area around the time of the burglary, I urge you to come forward and contact the police as you may have vital information which could help my enquiries.
I am also keen to speak to anyone who may have also been approached by this woman, and ask them to get in touch.
Anyone who can assist this investigation should contact Harrogate CID, select option 2 and ask for Dan Ridgeway. Alternatively, information can be emailed to email@example.com
Or call Crimestoppers anonymously on 0800 555111, quoting reference number 12140102596.