Are you using the Houzz app on a smartphone ?
https://itunes.apple.com/us/app/houzz-interior-design-ideas/id399563465?mt=8
If malware/spyware gets on your phone, it can find out what apps you have installed, as well as your contact list.
Or someone who has your phone number got malware/spyware on their phone and the malware is trying to get you.
I received a text from this number saying they got my information from Houzz. I do not list my phone number on Houzz. I have received the exact same text from different phone numbers multiple times. I contacted house and we have determined it is some type of a scam. I have also talk to other designers who have received the same scam.
Are you using the Houzz app on a smartphone ?
https://itunes.apple.com/us/app/houzz-interior-design-ideas/id399563465?mt=8
If malware/spyware gets on your phone, it can find out what apps you have installed, as well as your contact list.
Or someone who has your phone number got malware/spyware on their phone and the malware is trying to get you.