What characterizes 'Additional services' in architecture contracts?

• A. They are enumerated with a fixed pre-estimate
• B. They cannot be enumerated or anticipated and require hourly fees
• C. They replace standard services
• D. They must be included in the baseline contract

Answer: (B)

Additional Services are tasks that go beyond the architect’s standard scope and aren’t fully predictable at the outset. They arise from owner requests or unforeseen conditions and are handled with a separate, often hourly, fee or a negotiated rate rather than a fixed pre-estimate. Because they aren’t part of the baseline scope, they require a signed amendment to authorize the extra work and its compensation. This is why the best description is that these services cannot be enumerated or anticipated in advance and typically bill hourly.