[Inkscape-user] One metre interactive grid (long lat) superimposed on a map

People,

I have done a bit of Googling but am a little overwhelmed about where to start but I thought Inkscape people might have a better idea. I want to add an interactive 1 sqm grid to the attached plan. I have the original as a SVG file but it is too large to attach - I imported it from a PDF file for use in Inkscape. I want the grid to be square with longitude and latitude (maybe the maybe should be rotated) such that people could click a rectangle of squares to indicate a proposed new building lot on the site.

Is SVG the right tool to build such an interactive map for a web page?

Thanks,

Phil.