There is no definitive rule that every house should be built on Vastu principle. Vastu enhances the relation of the house with nature. Moreover, people who have followed Vastu have found positive results.

Yes. Vastu is a vedic science related to the building and its design, that takes into account all of the five elements- Earth, Fire, Air, Water and Space. The balanced interaction of these elements is what Vastu aims at, to provide a peaceful ambience.

If a house has Vastu doshas it can be corrected by- Using regulators or some charged objects, Changing rooms Changing interiors of the house or Having a different placement of items in the house.
There are certain pujas that can be done, too.

In today's market, a home built according to Vastu is more preferred than a home built without following it. And due to the growing popularity of Vastu it may have a negative impact.

Each direction has its own importance, there is no particular direction that a house should face. There are four major directions and sub-directions in Vastu. The four major directions are North, South, East and West and sub-directions are North-East, North-West, South-East and South-West.

There is no defined rule that the date of birth affects property purchase. But in the context of the position of your stars, astrologically, and also following numerology, your birth date, which has a specific number, is taken into account.

Vedic Astrology is an ancient Indian science which explains planetary motions and positions with respect to time and their effect on humans and other entities on earth. It has been practised for more than 5000 years. According to Vedic astrology there are 27 constellations made up of 12 zodiac signs, 9 planets and 12 houses with each house and planet representing some aspect of human life. Depending on when a person is born, the 12 signs are distributed among the 12 houses and 9 planets are placed in various houses.

You can rely on any of the above, until you feel you are being guided correctly.

Yes, sometimes, astrology can be trusted, when you seek any help. Like, for matchmaking with a life partner, astrology is deemed reliable. Although, it is the subject of a person's trust.

It depends on the astrologer's efforts and calculations. Despite this, for accurate astrology charts, there is a need for correct birth date, time and location information.

Astrology helps to find out the most compatible ways of life, so we can say, if someone makes life decisions according to astrology, then astrology can change life.

There is not a good or bad sign in astrology. Because zodiac signs are twelve only, which are divided into billions of people. Any astrology sign can be good or bad, which can be decided from their horoscope planets' position.

Astrology is a tool to check the right ways of life and the destiny's force. It cannot change the destiny of a native. But, some remedies like wearing a gemstone can speed up or rectify the destiny. Like, wearing a gemstone of lord of luck can help to remove burdens from life and help to speed up destiny.