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Planning tool — estimates only, not engineering or legal advice.

Pilot areas

Arcata Plaza in Arcata, California
Example of Arcata Plaza in Arcata, California. Not a project site. Terrence McNally · CC BY 2.0
County GISArcata / EurekaHumboldt County parcel layer. Arcata Ordinance 1583 adopts Appendix BL and Appendix BB. That is not a permit for a specific lot. Typical land cost per acre: not yet sourced.
Downtown Joshua Tree at Highway 62 and Park Avenue
Example of downtown Joshua Tree at Highway 62 and Park Avenue, June 2017. Not a project site. Glenn Francis (Toglenn) · CC BY-SA 4.0
County GISJoshua TreeSan Bernardino County parcel layer. The record has the APN and the shape, not zoning or a sale price. Typical land cost per acre: not yet sourced.
The Village Lodge walkway in Mammoth Lakes
Example of the Village Lodge walkway in Mammoth Lakes. Not a project site. Nandaro · CC BY-SA 3.0
County GISMammoth LakesMono County tax parcels. Typical land cost per acre: not yet sourced.

Home types

A tiny house on a trailer in Portland, Oregon
Example of a tiny house on a trailer in Portland, Oregon. Not a MicroHom project. Tammy · CC BY 2.0
Wall packageTiny home$16,300–$28,800 estimate, mid $23,600320–400 sq ft hemp-lime cottage, priced on the published 400 sq ft wall package.
A semi-detached house in Namibia
Example of a semi-detached house in Namibia. Not a California lot and not a MicroHom project. National Heritage Council of Namibia · CC BY 4.0
Wall packageDuplex$32,600–$57,600 estimate, mid $47,200Two dwellings, derived as two 400 sq ft wall packages.
An apartment building in West Valley City, Utah
Example of a multifamily apartment building in West Valley City, Utah. Not hemp construction and not a MicroHom project. An Errant Knight · CC BY-SA 4.0
Wall packageTowernot yet sourcedMid-rise hemp-infill block. The reports do not price it.

The 200 sq ft package is a separate estimate: $11,900–$21,100, mid $17,200. These are wall packages, not turnkey bids.

California figures

The November 3, 2026 Proposition 1 is a proposed $11,250,000,000 bond. Outcome unknown. Homekey+ has about $2,145,000,000 in its amended notice. These are statewide totals. They are not split by county.

Open the data hub · Funding readiness

Hemp-lime

A hempcrete wall at the CDL Green Gallery
Example of a hempcrete wall at the CDL Green Gallery. Not a MicroHom project. Jnzl's Photos · CC BY 2.0

Hemp-lime, also called hempcrete, is the wall material in the sourced packages. The photograph is an example of a hempcrete wall. It is not a MicroHom project. Some cement-heavy mixes are net-positive, so this picture is not a carbon claim.