Sharing this again, by request.
I love how Jesus measures tree size not in cubits (or whatever), but in hospitality. How big is the tree? Oh, big enough for birds to make their home there. Big enough to offer safety and hospitality. Big enough for them to lay their eggs and raise their chicks.
We could ask ourselves, how big is my church? Oh, big enough for people to find themselves at home there. Big enough to offer safety and hospitality. Big enough that people will feel it’s a place they can bring their children.
Addendum:
From the same chapter, we could ask, ‘How yeasty is my dough?’ and find the answer, ‘Yeasty enough to make enough bread for the whole neighbourhood’. Essentially most of these parables are about hospitality.
reverendally.org 
Amusing! And our church is quite spacious (upwards as well!) but as the West End was never completed (dut top lack of funds in 1909 …) we’re now adding a bit more – just to have p roper kitchen loos, meeting room (smaller than church!) & office … – and this because we want to ‘Welcome In’ the community! See my blog at http://morethanwriters.blogspot.co.uk/2017/08/so-is-work-in-progress-by-mari-howard.html
Sounds like a great project – we did something similar in my last church – it was lovely that people could just come in during the day and make themselves a cuppa, have a sit down, meet friends…. made the church feel so homely 🙂