Renovation work on older homes (compared to new construction) is not usually a fluid process and can present unknown factors into the contracting process. It is important to make sure that everyone involved is experienced and follows proper construction techniques. Sometimes even a small detail can become very expensive if not foreseen.
The planning process will ultimately make or break a budget if not managed properly. So what does this mean? This means that:
1) All unknown, but possible eventualities are identified, discussed with the customer and contingency plans prepared.
2) All subcontractors have been on site and are fully aware of all the work that is required of them and when they will be needed. Also that backup subcontractors are invited to quote just in case the first choice becomes unable to complete the work on time. Delays can sometimes become the most expensive extras.
3) All materials are selected well in advance. Availability is confirmed and delivery dates are well in advance of the date needed (in case of delays). Even then, alternate materials should be kept in a reserve list, in case of a problem with the first choice.
Planning is key for a renovation to stay on budget, on time and be finished to the standards expected.