Harbor Belle Nandina? I sure like the plant...but not suitable for my zone. Some say it can be invasive...might want to look into that.

I LOVE my scarletta fetterbush I bought last year....fits your requirements, however it needs partial/full shade. I plan on buying more this year.

How high is the foundation you're trying to hide? For instance, if your foundation is 12" tall, you'd want the shrub to be at least that tall when you plant it. So then it couldn't grow more than 18" more before it would be too tall.

Plants keep growing till they die. A shrub's listed "mature" height is usually the average height at 10 years; dividing that by 10 will give you the average vertical growth per year.

So buy something that grows slowly, trim it once a year, and plan to replace it when it gets too tall.

I have a bunch of dwarf mugo/mugho pines (Pinus Mugo 'Pumilio') which provide some evergreen structure for a large flowerbed that gets full noon and afternoon sun. They're described as "prostrate" and "spreading;" mature size is supposed to be 2' tall x 5' wide. I'll begin to do some pruning to their tops in a few years, because I don't want them to be much more than 2'. They would be fine in your zone. Not too exciting -- no fancy color -- but I like them and they do their job.