Put rough numbers around the dream. couldbuild shows what the build may cost, how much debt it could need, and which path creates the least monthly pressure.
No account or bank connection required.
A clearer first conversation
Estimate. Compare. Then verify.
Model land, build, site works, current equity, savings, income, construction finance, rent, growth, and lender limits.
Three paths
Sell · Keep · Wait
Estimates only. Not lending approval or financial advice.
Compare the real choices
See selling, keeping your current home, and waiting side by side.
Stress-test the numbers
Low, mid, and high estimates expose cost, debt, LVR, and monthly pressure.
Save without a password
Start as a guest, then keep every plan using a secure email magic link.
Share on your terms
Invite someone by email as a viewer or editor, and revoke access anytime.
Guest first. Clear retention.
You can use couldbuild immediately. Guest plans autosave while you work, but they are not kept forever.
Guest data expires
Guest plans are permanently deleted after 30 days without activity. Save with your email to keep them.