Traditional guidance, presented as such: numerology offers a symbolic cue for decor, not a forecast.
How the number is worked out
Only digits count. Letters, dashes and slashes are ignored, so B-307 becomes 3 + 0 + 7 = 10, and 10 reduces to 1 + 0 = 1. If a sum lands on 11, 22 or 33 it stays there; those are treated as master numbers in the Pythagorean convention the app follows. Any other two-digit sum is added again until a single digit remains.
house number = digits added together → reduced to 1–9, keeping 11, 22 and 33
Wing or building letters are not converted to numbers here. Some practitioners do assign letter values; the app and this page deliberately keep the simpler digit-only rule so that two people with the same flat number always get the same result.
What the result can and cannot tell you
Numerology is a symbolic tradition. Treat the number as a prompt for decor, a nameplate style, an accent colour or how you arrange the entrance, and nothing beyond that. It does not predict health, money, relationships or events, and there is no such thing as a wrong house number.
In particular, do not change a legal address, a registered flat number or a name because of a numerology reading. Addresses are legal identifiers tied to deeds, bills and deliveries; altering them creates real paperwork problems for a purely symbolic preference.
Using it alongside Vastu
The number says nothing about directions. For room placement use the plot-facing check and the kitchen, bedroom and main door guides, which draw on a different tradition entirely. In the VastuCalc app the two sit side by side in the Home & Vibe tab, each labelled as traditional guidance.