The efficient use of space
Solution 1:
Although not pertaining solely to efficient use of space, the word logistics is relevant (emphasis added; commas as found):
(operations) The process of planning, implementing, and controlling the efficient, effective flow and storage of goods, services and related information from their point of origin to point of consumption for the purpose of satisfying customer requirements.
Solution 2:
From Wikipedia:
The English words "economy" and "economics" can be traced back to the Greek words οἰκονόμος (i.e. "one who manages a household", a composite word derived from οἴκος ("house") and νέμω ("manage; distribute")) and οἰκονομία ("household management"). Leoni Schmidt Playing With the image: in conversation with margaret Roberts
Since
eco-nomics = management/planning of eco,
You would be looking for a technical jargon for spatial management/planning.
If you are allowed the liberty of coining a new term, it could be
spationomics
Otherwise, you might have to rely on some existing mouthful terms
- spatio-economic efficiency
- spatio-efficiency
- spatiologic-efficiency
- spatiological planning
Henri Lefebvre coined the term “spatiology” to involve both physical space and social space. As a Marxist, Lefebvre was interested in the production of spatiology within a modern, urbanising capitalism. He attempted to trace generative moments in its production and for him “space becomes redescribed not as a dead, inert thing or object, but as organic and fluid and alive; it has a pulse, it palpates, it flows and collides with other spaces.” - Leoni Schmidt - Playing With the image: in conversation with margaret Roberts