There are many household Gods in the Hellenic religion and without some background knowledge about how ancient Hellenic houses are built up, it can become a bit of a conglomerated mess when trying to worship all in modern times.  Which God watches out over which area? And where should you place your shrines in a perfect world? And in a realistic world? Why don't we try to suss things out today, hm?

Ancient Hellenic homes were simple structures, made from clay, wood, and stone. The roofs were covered with tiles, or reeds, and the houses had one or two stories. Most houses were small, just a few rooms, with a walled garden or yard in the middle. Others, like the house above, were much larger. They were not solely homes, but often doubled as offices, shops, entertainment areas, and as a place of worship. In many cases, a large wall with a single door connected the house to the street, while insuring maximum privacy tot he occupants of the house. Rooms at the front of the house often served as store rooms or work shops. Other rooms in the house served as bedrooms, as a kitchen, bathroom, and smaller store rooms. Symposia were held in special rooms, reserved only for men. The only women who entered the male-only rooms were serfs. These rooms were called 'andron' (ανδρών). Female-only rooms were called 'gynaikon' (γυναικῶν).

The courtyard of the home often held a bômos, a free standing, raised, altar where the majority of household worship took place. Some houses also had a wall niche, an indoor worship area, either in a room especially designated for worship, or in the main family room. These altars were used to worship the Ephestioi (Εφεστιοι), the most personal of the household Theoi. These almost always included: Hestia, Zeus Ephestios (Overseer of the Hearth), Zeus Kthesios, and Agathós Daímōn. Worship of these deities was highly personal, and many other Theoi could be added to this worship list.

Hestia was represented by the hearth fire that was always kept burning. If it went out, the male head of household would go to the prytaneion (Πρυτανεῖον), the structure where state officials met and where the city kept a fire for Hestia burning day and night, for a new flame. All fires in the house were lit from this one fire, so Hestia would watch over everything and everyone inside the house. Zeus Ephestios was and is a more active defender of the home. He shields the actual structure of the house. Where Hestia watches over the occupants, Zeus Ephestios guards the very walls, the roof, the floor, and any possessions inside the structure. He was worshipped at the main altar.

Zeus Kthesios guards the pantry, and was honored there as well, where he had his own shrine, often adorned with a kathiskos. Agathós Daímōn and the ancestors were also worshipped at the main altar, although they may have had small shrines to themselves, especially in the case of wall niches.

In the courtyard of the house, the Herkeioi (Ἑρκειοι) were honored: those of the herkos or front court. Most notably, this was Zeus Herkeios (Ἑρκειος), protector of the enclosure of the house.

Just outside the house, and especially near the gate to the street, small shrines and altars were placed in honor of the less personal protectors: Apollon (sometimes in his epithet of 'Aguieus' (Ἀγυιεύς), protector of the streets, public places, and the entrances to homes), Hermes Propylaios, Hekate, and especially in Sparta, the Dioskouroi. Hēraklēs sometimes took the place of Apollon.

Zeus Herkeios' altar stood in the courtyard and He, from the inside of the house, protected against anyone wanting to harm the house or the family living in it. These altars were most often pillars, on or around which the offerings could be placed. Hermes, Apollon, and Hekate were represented by a pointy four-sided post. The top was reserved for Apollon, the bottom often held a niche where Deipnon offerings could be placed to Hekate, and Hermes' face (and sometimes his genitalia) was sometimes carved into the post. Hermes sometimes got his own post, called a 'herm', which was a rectangular post, with His face carved on top, and his genitalia carved out on the front.

So how does this translate to modern worship? The structure of houses has changed--many people don't even live in a house but in an apartment without a garden. So, how are the areas divided then? Let's start with a picture of a house with a garden, leading to the street:

The house itself is 'circle' one. It's the realm of the Ephestioi. Their influences reaches right up to the walls. If you live in an apartment, this circle encompasses your entire home. This is where your bômos is, where you might have a pantry shrine to Zeus Kthesios, where you might have a shrine for Hestia if you don't have a fireplace, and so on. This is the main circle of worship.

Then we move out to the garden: anything from the house onward that still belongs to you. In an apartment, this would be the balcony if you have one and arguable also the elevator or staircase and hallway leading to your apartment door. This is the domain of the Herkeioi. You could set up a small shrine near the front door to pour out some libations into. Do you live in an apartment? A flowerpot or plant is a perfect way to hide your little shrine. Do you want to bring things together even more? Zeus is whom is honored here most, and his sacred tree is the oak. Why not plant some acorns and water them with libations of water? This second 'circle' spans the area from the house to the street.

The third 'circle' is not a circle at all: it's a barrier. Just like ancient Hellenic cities often had gated walls, so does the home. There where the driveway, garden fence or building door meets the street, Hekate, Apollon and Hermes (amongst others)  stand tall to guard against any harmful influence from outside. It thus stands to reason that your shrine for Them belongs at that spot.

This third is of course the most tricky of shrines. It's a very visible spot and if you live in an apartment complex, you might not even have the option to put anything of yourself there. I have a friend who lives in an apartment in New York. She has a little mailbox in the entry hall, close to the outer door. At the back of it, she'd put a little bowl and leaves small offerings there whenever she goes to collect her mail. Inventive, hm? Another option would be to 'pull back' this barrier to the door of your house and make a shrine just inside or outside of it. That's what I did when I still lived in an apartment.

I hope this makes things a little clearer and you have a few more handholds to base your worship on.