Construction Office Manager Duties When You're the Owner
Plenty of small subs don't have an office manager. The owner is the office manager, after the crew goes home, at the kitchen table. Here's what that job actually covers, a 30-minute nightly routine that keeps it from piling up, and where AI takes the typing off your plate.
What a construction office manager actually does
- Gets you paid: invoices, pay applications, reminders and retainage.
- Protects the money: change orders signed before extra work starts.
- Keeps you on the job: insurance certificates, licenses and the documents GCs ask for before you mobilize.
- Runs the schedule: crew assignments, inspections, material deliveries.
- Answers people: customers, GCs and suppliers, the same day.
- Feeds the books: receipts, vendor bills and invoices to your bookkeeper, sorted by job.
None of it is hard. It's the volume, at the end of a 10-hour day, that buries people. The fix is a routine short enough that you'll actually do it.
The 30-minute nightly routine
Print it, tape it by the coffee maker, or save it in your phone's notes.
Owner's office routine
NIGHTLY OFFICE ROUTINE (about 30 minutes) [ ] Invoices: send today's invoices for finished work [ ] Messages: answer customer and GC texts and emails from today [ ] Receipts: photo today's receipts, tag each one to a job [ ] Tomorrow: send the crew text (who, where, what to bring) [ ] One admin task from this week's list WEEKLY Mon [ ] Follow up on open quotes Tue [ ] Unsigned change orders: send for signature Wed [ ] Insurance: certificates and policies expiring in the next 60 days Thu [ ] Vendor bills: check against receipts, schedule payments Fri [ ] Unpaid invoices and pay apps: send reminders MONTHLY [ ] Hand receipts, bills and invoices to the bookkeeper [ ] Check open retainage on every job [ ] Review which quotes turned into work, and which didn't
Where AI saves the most time
The routine is mostly writing: invoices, replies, reminders, quotes. That's the part AI on your phone does in seconds while you check the numbers. Start with the contractor invoice template and the prompts in AI for contractors. On nights when everything feels urgent, use this one first:
Sort tonight's office work
I'm a [trade] contractor and I do my own office work at night. Here's my brain dump of everything I need to deal with. Sort it into: do tonight (15 minutes or less), schedule this week, and hand to my bookkeeper. Put the most money-related items first. Keep it short. Brain dump: [dictate everything on your mind]
When to hire help instead
A part-time office person or a virtual assistant makes sense when the routine regularly runs past an hour, or when you're turning down work because you can't keep up with the paperwork. Even then, write the routine down first. Whoever you hire needs it, and a written process is the difference between help that sticks and help that quits in a month.
Where to start
Money Audit
One recent job, every invoice, change order and payment tied to the bank. See what you're still owed.
See the Money AuditFree Paperwork Pack
Ten copy-and-paste AI prompts for change orders, pay apps, insurance certificates and GC replies.
Get the packTyler Alexander is the founder of Cranes Consulting and co-owner of Alexander² Construction, a general contractor in Tampa and Naples. He teaches subcontractors and small businesses to use AI to cut office time.