CONTACT US

Talk to a human who’s built a house

Questions about an estimate, a plan for your building company, or help with your account — we reply within one business day, Melbourne time.

Send us a message

By sending you agree to our privacy policy. We never share your details.

Live chat & help centre

In the app: Get Help (bottom of every screen)

Mon–Fri 8 am – 6 pm AEST

Email

hello@ob1app.com · support@ob1app.com

Replies within one business day

Phone

1300 OB1 APP (1300 621 277)

Mon–Fri 9 am – 5 pm AEST

Office

12 Builders Lane, Richmond VIC 3121

By appointment

Building soon or need in-person help?

Book a 20-minute call with an OB1 estimator — we’ll run one of your real projects through the engine.

Book a call
MAP · RICHMOND VIC