Hi Grant,
I'm sorry for the delay in replying. Your message slipped by us. Apologies.
As you know Constructor and Estimator are aimed fairly and squarely at medium to large construction companies.
I've asked round the office for suggestions, but the best we can come up with is Timberline, but even that is aimed at the larger players.
There may be something on the market for your needs, so try a local reseller to see if s/he can suggest something. I'd be pleased to hear if your hunt is successful.
Best regards,
Andy harvey