Does the platform handle ADU conversions of existing structures?

Yes — garage conversions, basement conversions, and accessory unit additions are all modeled.

What about manufactured homes and modular construction?

Modular is supported with separate calibration. Manufactured-home placement is supported for zoning compliance; cost calibration is module-specific.

Can homeowners use the platform?

Yes — there's a homeowner role with a tuned report layout and pricing.

Does it work for vacation rentals and short-term rentals?

Yes, with the zoning posture surfacing STR restrictions where the city publishes them.

Can I model a phased build (e.g., main house now, ADU later)?

Yes — phased scenarios are supported with separate cost and permit pathways per phase.

What about historic district overlays?

Surfaced as overlays; the design-review process they trigger is noted with a confidence flag.

Residential Development Software — From SFR To Small Multifamily

Residential development covers the long tail of US construction — SFR rebuilds, ADUs and JADUs, duplexes, triplexes, small multifamily up to roughly 50 units. It's the vertical with the most participants (individual developers, small builders, owner-builders) and the most jurisdictional variability (state-mandated ADU rules, varying multifamily definitions, different infrastructure requirements).

Buildora IQ's residential coverage is the platform's strongest. Every residential build type has dedicated calibration, zoning interpretation, and scenario modeling.

The residential build types the platform models

Single-family new construction, single-family teardown / rebuild, ADU (detached, attached, conversion), JADU (where the state recognizes it), duplex, triplex, four-plex, townhomes (rowhouse and stacked), and garden-style multifamily up to roughly 50 units. Each build type has its own cost calibration, zoning-rule overlay, and concept template. An ADU is not just a small house — the cost-per-sqft, permit pathway, and parking implication differ materially.

State-mandated ADU rules and where they intervene

California, Oregon, Washington, and a growing list of states have state-mandated ADU rules that override local zoning in defined cases — minimum unit sizes, owner-occupancy elimination, parking-requirement waivers near transit. The platform encodes these state-level overrides and applies them where the parcel qualifies. For homeowners and small builders this is the most valuable single feature in residential coverage — knowing whether the state rule overrides the city's restriction without reading two layers of statute.

Small multifamily — where most cost surprises live

Duplex, triplex, and 4-plex projects are where small developers most often misprice. The jump from SFR to 2-4-unit residential triggers different cost structures (fire separation, fire sprinklers above 3 units in many jurisdictions, parking-per-unit minimums) and a different permit pathway in many cities. The platform's multifamily calibration accounts for these jumps explicitly — a 4-plex isn't priced as 4x an SFR, it's priced with the right per-unit deltas for fire, parking, and shared infrastructure.

Reports tuned for the residential buyer

Residential reports are tuned for the audience that reads them — a homeowner planning an ADU gets a different report layout than a small developer pricing a 4-plex. Both share the underlying analysis; the presentation is fitted to the reader.

Use Cases

All Residential Build Types: SFR, ADU/JADU, duplex through ~50-unit garden multifamily — each with dedicated calibration.
State-Mandated ADU Rules: California, Oregon, Washington, and growing — state overrides applied where they qualify.
Small-Multifamily Calibration: Fire, parking, and shared-infrastructure deltas priced correctly above 3 units.
Audience-Tuned Reports: Homeowner-readable for owner-builders; principal-grade for developers.

Frequently Asked Questions

Does the platform handle ADU conversions of existing structures?: Yes — garage conversions, basement conversions, and accessory unit additions are all modeled.
What about manufactured homes and modular construction?: Modular is supported with separate calibration. Manufactured-home placement is supported for zoning compliance; cost calibration is module-specific.
Can homeowners use the platform?: Yes — there's a homeowner role with a tuned report layout and pricing.
Does it work for vacation rentals and short-term rentals?: Yes, with the zoning posture surfacing STR restrictions where the city publishes them.
Can I model a phased build (e.g., main house now, ADU later)?: Yes — phased scenarios are supported with separate cost and permit pathways per phase.
What about historic district overlays?: Surfaced as overlays; the design-review process they trigger is noted with a confidence flag.

Related Resources

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