@hawkeye_daddy you know, I never considered the fire deterring benefits of a grass lawn! We are in an area that's not prone to wildfires, but I can certainly see that as a benefit. I'm on super good terms and have open communication with my neighbors. One of them just asked my permission to build a trellis for her garden because it will be high enough to barely see the top of it over my fence (naturally, I didn't object).
And yes, I would definitely do small bits at a time. I can't afford to buy a bunch of lavender, anyways, so it would be a slow process.