Feng shui and geobiology arrive from opposite directions — one from a centuries-old philosophical tradition about orientation and flow, the other from 20th-century claims about underground water and geomagnetic disturbance — but both end up asking a builder to actually look at the site before deciding where to put things. That much is good practice regardless of which framework you find persuasive.
Two traditions, two claims
Feng shui is fundamentally a design philosophy: it describes how orientation, flow, and the placement of elements like water and mass affect how a space feels to occupy, without claiming a physical mechanism behind that effect. Geobiology, as practiced by its 20th-century European proponents, makes a different kind of claim — that specific physical conditions underground (water veins, geological faults, disturbances in the local magnetic field) measurably affect the health of anyone living above them. One is a philosophy of livability; the other is a claim about physics, and it should be evaluated as one.
Where the evidence actually stands
The physical mechanism proposed by geobiology — that a person’s health is meaningfully affected by minor local variations in geomagnetic field strength from underground water or faults — has not been demonstrated in controlled research, and the surveying methods historically used to detect these conditions (dowsing, in most traditional practice) haven’t held up under blind testing. That doesn’t make every observation from a geobiology survey wrong; it makes the claimed mechanism unsupported.
What’s worth keeping regardless
Strip the metaphysics from both traditions and what’s left is still useful: pay attention to how morning and evening light move across a site, notice where water naturally collects or drains, and design entry sequences and sightlines deliberately rather than by default. That’s just good site design — it doesn’t require believing in either tradition’s proposed mechanism to be worth doing.