"基本建设费用" can be translated as "capital construction costs" or "costs for basic construction" in English.
"Capital construction costs" is a more formal and commonly used term in financial and engineering contexts, referring to the expenses incurred in the construction of major facilities or infrastructure.
"Costs for basic construction" is a more straightforward translation that directly conveys the meaning of expenses related to fundamental construction work.
In most professional settings, "capital construction costs" would be the preferred choice.