A home portraiture or HP-Session is a photographic event that is done within a home or any building structure other than a studio, where photos of family, kids/babies, pregnant mum, uncles/aunties, etc are taken. Home Portraiture can be broken down into few different genres of photography(ie. family, newborn, maternity, boudoir for ladies and dudoir for gents, etc). But yes, basically any photos taken inside home can be categorised as products of a home portraiture session.
Is doing a home portraiture simple? Yes and No. There's always unexpected challenges. Photographers always try their best to arrive early. But clients might not be ready. Or a mix of these two scenarios. As a photographer, I am still a believer of the 6Ps acronym which means "Proper Planning and Preparation Prevents Poor Performance." I still do my gears checklist on every event I shoot and run through them at least 2days before and final check the day before the event. Just to make sure I got everything I need or might need, but without bringing all my photographic equipment. Less is more and too much is waste of energy. I just don't want to look like a soldier going for a battle.
Running a business and being the photographer at the same time is crucial. Time is precious. You are paid by the hour. So, you should act as a real professional who knows your gears by heart and possess an excellent interpersonal skills. You don't want to spend so much time tweaking your settings, except exposure adjustments, based on available light or lighting equipment you have. You might be using few lighting equipment that are remotely triggered or just the ambient window light.
Home Portraiture has its own great advantage. Unlike inside a traditional studio environment, where a photographer is only limited on shooting at the front of maybe 5' X 5' backdrop(otherwise you'll get other props on the sideline), home portraiture offers a lot of opportunities(ie integrating a shot at the lounge, by the stairs, at the bedroom, by the window etc), not to mention of shooting from different corners within the comfort of client's home.
Lastly, you never want to upset your clients. Your goal is to make them feel good, look fantastic and finally, you'll try to look for those flattering angles. You can of course, make light adjustments(ie. intensity, angles and distance), direct poses, keep talking and maintain that eye contact. The very reason why I still use a tripod and shutter release cable during my HP-Session. Not because my hands are unsteady and I'm avoiding to have a camera shake. My main reason is for them to see my face and see my eyes while I'm chatting with them and shooting at the right time. I talk with them because I always wanted to bring out their best facial expressions and body language. I'll make sure though, that I stand right next to my camera(but not hiding my face behind it). Using the DSLR LiveView won't hurt me, because I won't be taking a thousand-shots in 2-hours time. I know, using my LCD screen will drain my battery quicker. Sometimes, you weigh the pros and cons and go with your guts. Aiming for images of stronger connection, I always tell them to look at the camera, and not at the handsome/gorgeous photographer. That statement alone always bring another set of smiles. You also, don't want them to hold their breath for too long(definitely not). In my experience, most of them laugh when I say "don't stop breathing, but stop talking." Have an experiment, photograph someone talking, and see how you go. Anyway, in most social events though, I noticed people's tendency of holding their breaths when a photographer started to hide his/her face behind the camera and peeping through the pentaprism viewfinder. After hearing the loud "click" they all whinged, while catching their breaths that the photographer was too slow in taking a single shot. Must have been a practice of the past. Photographing a relaxed subject will give you unique image perspectives.