Looking at the chart, you can see there are 3 Essential Categories of Energetic Influence, Financial, Physical, and Emotional, and at least seven sources of energy channeled toward the home, with additional subdivisions and further defined individuals in relationships with previous owners and neighbors.
Home buying being what it is, we have to look at the Financial Aspects first, and whether the home is truly affordable, or burdensome to you. If the previous owners are making a killing, or getting killed, you can expect the house and your relationship to it to feel differently. Imagine what it feels like to walk away from bankruptcy and lose your home.
More importantly, and less considered, your home is built on Land, where geologic predisposition, proximity to watercourses, magnetic anomaly, problems due to terraforming or habitat loss, and direct influences from birds, animals, or insects, may all play a part.
The signals that are usually most intense, however, are Emotional. While the land may carry the ancestral energy and spiritual contracts or historic trauma of native peoples or settlers, the events that have gone on in the home, to the individuals and families living there, and the emotional states of those people, are the signatures the home is usually known for.
Other than the land itself, and whatever influence that may have on the house, and admitting the possibility of flood, fire, hail or space junk, all of the influences will be related to actual people.
Obviously, YOU will have a great deal invested in your HOME, in both the Financial and Emotional categories, which will leave you open to match the vibratory energy of everyone else along those same lines, and unable to see where related problems may exist.
Unless you are selling, your Realtor is the least likely to have a long term effect on the feel of your house, but whether they are acting for you, or are the listing agent, and whether the house is new, sets their Financial alignment on a personal level, which can have some effect. When selling your home, realtors are a much more important part of the puzzle.