Boxy retopology best practices?

[Bullit]

I was given a big mess of a building, it is a boxy model with almost no curve form, but it is modeling disaster with hundreds of intersecting polygons. So i need to remake it to make it much lighter. What should be the best approach?

Get a grid and move/add points with snap?

Trace the relevant building edges with curves?

Extract the relevant edges? since many belong to intersecting poligons might not be a good idea.

Any other idea, or tutorial?

[SamHowell]

-Get/Primitive/Polygon Mesh/Empty
-Turn on snap to point.
-Use the Create Polygon Tool to create a new mesh along the lines of the old one but missing out the bad modelling.

It's tedious but you will be sure it's done correctly.

Or buy Topogun

[Bullit]

Thanks, that is what i ended up doing.

I wonder if a sort of shrinkwarp would work too, maybe it needs a too detailed mesh.

[KLONOA WORKS]

for topology I follow this video its about shrink wrap. hopefully this is what you need.

[Bullit]

Thanks

[SpookyMunky]

Since it was a boxy model I wouldv started out with a box/cube hehe. middle mouse click on edges with the split edge tool a few hundred times (throwing in the odd extrusion) and job done ?

[Bullit]

I fixed the thing from the model itself.