My DOB is 12 July 82 and my wife's is 26 nov 1979.Bought a house with number 2601. Is this lucky?

Pavan, your lucky numbers are the same, 3, 4 and 9. And you have the same unlucky number 6. In this aspect, 2601 isn't a good one. If possible, you might choose a house number based on your lucky numbers.

If I calculate then 2+6+0+1 comes to 9. How are we calculating 6 ? please can you tell me more on it as I cannot change my flat as it is already booked.

Pavan, number 6 is found based on your zodiac signs, including your lucky numbers 3, 4 and 9. It's ok that you calculated 9. It's your lucky number.

I just analyzed your house number in another way. 6 is just one of the four numbers. And it's your unlucky number. So I think this house number isn't good.

You already booked your house so that there is no need to talk about whether it is lucky or not. Even the number isn't good, the house might bring you some good luck if it faces south. If it is just a flat, then you may choose the one located in the east. These two directions are auspicious.