ADU Cost Calculator Estimate Your Arizona ADU or Casita Budget in Under 60 Seconds

CMP General Contracting’s ADU Cost Calculator helps Arizona homeowners and investors estimate budget ranges for backyard casitas, detached ADUs, guest houses, and small residential living spaces. This tool is designed for early-stage planning and helps you understand how size, finish level, and location can affect overall project investment.

 

CMP General Contracting | ADU Cost Estimator
Arizona all-in pricing • Fast budget range • Not a bid
AZ 60 seconds All-in

Inputs

This estimator assumes ADUs are 300–1,200 SF. A firm price requires plans, site walk, and city requirements review.

Estimated budget range

$—
Enter square footage to calculate.
Estimated all-in total$—
Important: This is an all-in budget estimator only and is not a binding quote or contract. Final pricing depends on ADU type, foundation, utilities, site access, inspections, and material selections.

Material sourcing: If finish materials must be purchased by CMP General Contracting, pricing may increase.

Concealed conditions: If hidden conditions are discovered—including electrical wiring deficiencies, plumbing issues, termite damage, moisture intrusion, rot, or structural concerns—additional costs may apply.

Permits & utilities: City permit fees, impact fees, engineering, and utility tie-ins (water/sewer/gas/electrical) vary by jurisdiction and site conditions and may affect final pricing.
We’ll carry your estimate details to our Contact Us form so you don’t have to re-type them.
What This ADU Calculator Includes

This ADU calculator is designed to estimate early budget ranges for:

Detached backyard casitas

Guest houses

Small rental units

Home office ADUs

Multigenerational living spaces

Studio-style layouts

One-bedroom ADUs

ADU projects with bathrooms, kitchenettes, HVAC, and utility coordination

Request Estimate

What Impacts ADU Construction Costs?

ADU and casita construction costs can vary depending on square footage, site access, utility tie-ins, foundation requirements, finish selections, bathroom and kitchenette scope, HVAC requirements, permitting, engineering, and city-specific development requirements.

A firm project price requires a site walk, confirmed scope, permit review, material selections, and utility assessment.

ADU & Casita Services May Include

  • ADU planning and project coordination
  • Detached casita construction
  • Guest house construction
  • Garage conversion coordination
  • Utility planning and tie-ins
  • Plumbing, electrical, and HVAC coordination
  • Bathroom and kitchenette build-outs
  • Flooring, drywall, paint, and finish work
  • Foundation and framing coordination
  • Permit and inspection support

Why Choose CMP General Contracting

  • Licensed Arizona General Contracting company
  • Residential construction and ADU project experience
  • In-house HVAC coordination
  • Plumbing, electrical, framing, drywall, and finish coordination
  • One point of contact throughout the project
  • Financing options available for qualified homeowners
  • Serving Phoenix, Tempe, Scottsdale, Mesa, Chandler, and surrounding areas