Send out a survey to see what they want.

A BNY Mellon Wealth Management survey found the 6/10 office made at least six direct investment last year with 7/10 planning to make the same number of investments this coming year. 

If you’re just saying the survey cost of getting the existing building layout documented is too much, you might be able to get creative and avoid the costs, but it’s not a great bet to make. 

Quote from @Michael Ellis: Survey your tenants.

For example, if an acceptable survey is provided, the Standard Exception for survey matters will be deleted from the policy but a special exception for any matters shown on the survey will be taken. 

Spent a lot of money on a useless custom floorplan and various surveying costs. 

It's on the inexpensive side, but between the survey (about an hour) and screen-time, it takes me about 6 hours.

There is all the trades but what about trainers for the trades, project Managers, draftspersons, logistics, site survey, submittals, on and on and on..... 

However, 80% of tenants in a recent CBRE survey expect to increase their spatial requirements over the next three years, indicating a shift towards in-person work and future growth.While new demand remains slow, these lease renewals are a positive sign, laying a stable foundation for the office market's recovery.

Survey - Get your own survey done ASAP even if you have seller's version - generally you'd need an ALTA survey for a commercial deal.