Dear Edward,
You can use, if existing, or open any one of the expense heads like:
1) Housekeeping Services
2) Building Maintenance Services
3) Civil Engineering Services
4) Water & Sanitary Services, etc.
whichever suits you well. If the expenses are of a major type, you should better use the Expenditure Head, "Civil Engineering Services."
PS Dhingra
Chief Executive Officer
Dhingra Group of Management & Vigilance Consultants
New Delhi-110089
dcgroup1962@gmail.com