capitalize or expense

Building & Construction Company” (homebuilding)
so when they develop a new project,Example 20 houses (all together in the same land) the develop as well a showroom ,so the sales people can promote and sales the new houses,late when they sold all the houses they dismantlement the showroom ,sometime if the project is big example 100 houses they rent a showroom o sales room in the high street o in shopping center to sale de houses .
My question is about the expenditure of the showroom, is capitalize or expense.
The showroom is part of the project ,but as well is part of marketing and publicity strategy
I understand marketing and publicity strategy are expenses , I cant not capitalized
But Im not sure if Im right , or I can capitalized some expenditure to the project because the need as well refurbishing the showroom.