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How to build a Jewish community

Avi Gillis shares the secrets of establishing Mill Hill East’s flourishing congregation from the ground up

January 8, 2026 16:27
Avi Gillis with his wife, Charlotte, and their children (Photo: courtesy)
Avi Gillis with his wife, Charlotte, and their children (Photo: courtesy)
4 min read

In 2016, Avi Gillis decided to move out of Hendon with his wife and two young children, and he settled upon Mill Hill East as a suitable destination. “But” he says, “when I moved into the area I said to my wife that if we’re going to buy a house here, we have to start a community. I never doubted for a second that it was going to happen. I had that dream from the very beginning.”

Josh Kleiman, whom Avi knew from their time at Bnei Akiva as teenagers, happened to be already living in what is affectionately known as “MHE”, and was involved with the United Synagogue’s “Communities of Potential” initiative. The fledgling, two-man MHE community joined the programme and attempted to drum up local interest. “We printed 250 flyers and put them through every house with a mezuzah in a two-mile radius,” Avi, who is now 41 and has three children, tells us.

Their efforts paid off, and the very first MHEJC meeting attracted more than 50 people, followed by the first Friday night service, which was held in Avi’s living room. 2017 saw the inaugural Shabbat morning service, with over 100 in attendance, and their attainment of full US membership came the following year. “The US was incredibly visionary and trusting of our project”, Avi says, “and that allowed us to really make it a grassroots initiative. It didn’t feel forced at any moment.”

The first working group contained mostly young people – “young professionals, some with very young families, who were really time-poor”, Avi says. They leveraged the variety of skills within the group. “Everyone was working to their strengths. Someone who worked in marketing did all the social media. My wife works in branding, so we did the logo with her. Everything we did was designed like a start-up and everyone had their very specific roles.”

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