Build estimate
Nationwide modular ADU shipping + value calculator
The 1-bed and 3-bed modular ADU packages can be planned for U.S. delivery from a $170 per square foot factory-unit base, with kitchen, bath, electrical, plumbing, room AC, fire-focused assemblies, and a cost calculator that separates the unit from freight, crane, foundation, utilities, permits, tax, and local site work.
The value engine
A serious ADU buyer in any U.S. market needs to see the product, the approval packet, the unknown local costs, freight/setting reality, and the property upside at the same time. ADU Cost now routes the first decision through a calculator that compares the $170/sf base unit path against editable market-by-market value-per-square-foot and rental assumptions.
The calculator does not scrape Zillow or Redfin. It uses editable planning assumptions so a buyer can replace the defaults with a real appraisal, Redfin/Zillow comp, rent comp, supplier quote, freight quote, crane quote, local jurisdiction fee estimate, or utility bid.
Model showcase
Best positioned as the lean backyard rental, guest unit, parent suite, or fast feasibility option when the buyer wants a smaller footprint and a cleaner budget conversation.
The larger product story: a 962.40 sf gross area and 931.63 sf net indoor area shown in the source packet, marketed as the approximate 1,000 sf family/rental path.
Product motion
The homepage now uses the real product demo video, plus frame-derived education stills, so a buyer can see that this is a modular dwelling system with assembly stages and not a generic ADU stock photo.
Scope ledger
Built fire-focused and built fast
Steel-frame structure with fire-focused positioning and source engineering pages that let a buyer inspect the structural logic.
SIP wall and roof assembly education connects the approval drawings to practical thermal and fire-performance questions.
Floors, walls, and ceilings can be explained through the Kingdom flooring and wall-panel catalogs instead of vague finish promises.
The exterior section separates the visible finish package from local foundation, utility, and authority review.
Stone countertops, complete bathroom, electrical, plumbing, and individual room AC are presented as inclusions to confirm in the final supplier packet.
The site explains this as the set/completion target after local approvals, foundation, access, and utility readiness are handled.
Search-demand gap map
The keyword-gap research showed strong intent around prefab ADU cost, ADU building permits, ADU cost calculators, modular ADUs, and the real cost to build an ADU. The site now answers those searches with focused pages instead of repeating the same generic ADU pitch.
ADU education center
The stronger site is not only a calculator. It explains accessory dwelling units, the California factory-built housing lane, what the fold-out product package includes, what the R-22345 and R-22348 documents prove, and which local costs still need a real site review.
Structural engineering layer
The R-22345 and R-22348 packets are now used as visible education assets. A buyer can see the approval criteria, model drawings, steel-frame logic, SIP assembly notes, wind-pressure path, and engineering-analysis outputs before opening the calculator.
This section keeps the honest boundary in view: the factory-built structure documentation supports product review, while foundation, anchorage, utilities, placement, and local inspection remain site-specific work for the project team and authority having jurisdiction.
The product
The source packet includes a 3L three-bedroom plan package, a 1L one-bedroom plan package, Kingdom flooring, Kingdom wall panels, exterior product photos, and an unfold video. The site is designed to make those pieces understandable for a homeowner, investor, or contractor before a formal quote.
Cost stack
Truth gate
The engineering letters state that the approval covers the factory-built structure only, and that foundation, site work, utility connections, roofing/sealing items, and local authority review remain part of the project. ADU Cost keeps that boundary visible so the sales conversation stays credible.
Read approval boundary
Next move
Start with the calculator, then send the scope packet with your preferred model, target city, site access notes, and utility assumptions.
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