building expenses; construction costs
Refers to the total cost of constructing a building or structure, including materials, labor, and related expenses.
The construction costs for the new house were higher than expected.
The building expenses for this project are about 200 million yen.
工事費 refers to construction work costs in general, including civil engineering, whereas 建築費 is limited to building construction.
Compound of 建築 (けんちく, 'architecture, construction') and 費 (ひ, 'cost, expense').