Some clients are not experienced in voice over. So another way you can help them is to advice then and help them really understand all that goes into a voice over recording to get it to the final polished result. Of course you need to take this into account when you charge for your time and again whether this is a one off project or has potential to be a long term client.
First, since you’ve decided to use professional talent rather than record your own voice over, you know the challenge is to find a person whose interpretation of your script and voice quality represents your brand. You might have a list of qualities — female or male, a mature or childlike voice, a certain accent, authoritative, and so on. This is your voice profile. It’s best to start with this list already defined so you can easily narrow your results.

As editor, you need to turn the raw recording into the final version of the file you'll be sending to your client. Editing during a recording session can be problematic, and particularly so if you're recording in a domestic environment. How can you expect to hear the drone of the dishwasher ruining your recording if the dishwasher is still running as you edit? I'll look in more detail at setting up a voiceover recording studio next time, but for now, if recording in a separate room or isolated booth isn't an option, at least try to edit the file the following morning (or maybe at night) when there's less noise around — because hearing your recording with a fresh ear and in a quieter environment will help you to make better editing decisions, and will reveal noises that slipped your attention earlier.