Free interactive pencil test

Will my duplex pencil?

Two units, one lot. Adjust costs and rents to see whether a duplex clears your yield or margin target.

Why we built this

Duplexes are the entry point for missing-middle housing. A quick pencil check beats rebuilding the same spreadsheet for every lot.

When a scenario looks promising, take the next step on a real address — zoning, lot dimensions, setbacks, and height limits are free tools on Bucky.

Check this address in Bucky Book a demo

More typology pencil tests

FAQ

Is this a side-by-side or stacked duplex?: The model is typology-agnostic on plan form. It uses unit count, GFA, and cost assumptions — not a specific floor-plan layout.
Does this read my zoning?: No. This is an assumption calculator — you set lot size, costs, and rents. For parcel-backed zoning facts, use Bucky’s free address tools or a project workspace.
Who is this for?: Developers, architects, and planning consultants who want a fast “does this typology pencil?” check before committing to a site or detailed study.

Why we built this

Duplexes are the entry point for missing-middle housing. A quick pencil check beats rebuilding the same spreadsheet for every lot.

When a scenario looks promising, take the next step on a real address — zoning, lot dimensions, setbacks, and height limits are free tools on Bucky.

FAQ

Is this a side-by-side or stacked duplex?

The model is typology-agnostic on plan form. It uses unit count, GFA, and cost assumptions — not a specific floor-plan layout.

Does this read my zoning?

No. This is an assumption calculator — you set lot size, costs, and rents. For parcel-backed zoning facts, use Bucky’s free address tools or a project workspace.

Who is this for?

Developers, architects, and planning consultants who want a fast “does this typology pencil?” check before committing to a site or detailed study.