Several years back, I made my first effort to clean the outside of a home that was crying out for it. Got it done without any pressure washing. Started by using a hand held quart sprayer with pre-mixed 30 SECONDS Outdoor Cleaner.
I felt like it worked well. Later, I bought the gallon concentrate and diluted it myself.
Several years later, I have moved on to using a pump sprayer.
Here is a good video to watch before heading out to buy one:
Here is what I ended up buying:
Smith Contractor 190216 2-Gallon Sprayer with Viton
Happy with the sprayer and it minimizes any need to step on a ladder.
These days, I am mixing my own home brew bleach and detergent solution. The images above were done with the home brew. There are various recipes on the web for mixing your own solution.
For high areas, and to avoid ladder work, I still like the 30 Seconds Outdoor Cleaner garden hose sprayer. This can also be refiled with home brew.
Happy Cleaning