I dismissed this idea at first, but the more I think of what we saw of these two places, the more plausible it seems.

That front driveway area, where someone carried a cutout of Saul to a dumpster, that looked pretty similar to what we saw of the driveway (in very different lighting) when Jimmy was throwing the bowling balls over the wall. I'll have to rewatch and see if they had a shot in the kitchen in ep 1; I think that would settle things.

It could be that they shot in the same house just to save money and/or time, and they don't mean for it to represent the same house in the show. But it could also be one last insult to Howard. I guess it sounds like Howard and his wife are moving quickly toward a divorce, which will probably mean selling that house (just since it's so big and probably too valuable to subdivide the assets).