finns FI
@finns
GA4 Oct 07, 2026

combining two GA4 properties into one view

Client has the main site and the shop on separate GA4 properties and wants a single report covering both. I know views are gone. Is a roll-up property the only option, or can looker studio blend them well enough?
combine two ga4
2

Leave A Reply

Log in to post an answer.

2 Answers

K
kiran_funnels Nov 09, 2026
finns
If it's the same visitors moving between the two sites, set up cross-domain measurement in the shared property too (data stream > configure tag settings > configure your domains). Otherwise a person going from site A to site B counts as two users and two sessions, and your conversion paths look broken.
Reply
C
charlied Oct 14, 2026
finns
You can't merge them. Roll-up properties exist but they're GA4 360 only. On the free version, two options. For reporting, put both properties into one Looker Studio dashboard and blend them. For going forward, add a second measurement ID to the tag on each site so they also send into one shared property. That only starts from the day you add it though, no backfill. If you need the history combined properly, turn on the free BigQuery export for both and join them there.
Reply