Free tools
Run the numbers before you talk to anyone.
Every Avorino tool in one place: price a build, model the rent, size the loan, check your city's permit reality.
Calculators.
ADU Cost Calculator
Get an instant, detailed cost breakdown based on your property location, ADU size, and finish level. Powered by real Orange County market data.
Calculate Your CostADU ROI Calculator
See your projected rental income, property value increase, and payback timeline. Make confident investment decisions with real numbers.
See Your ROIGarage Conversion Cost Calculator
Price a garage conversion on your own garage: square footage, finish level, and what the permit and utility work really adds.
Price My ConversionADU Loan Calculator
Work out the monthly payment, total interest, and what an ADU build costs to finance across the terms lenders actually offer.
Run The NumbersReference.
OC ADU Permit Index
Permit reality for every Orange County city and community: who reviews, what they ask for, and the local quirks that set the calendar.
Look Up Your CityADU Plan Samples
Real floor plans we build from, with square footage and layout, and a per-plan price on request.
Browse The PlansPut a real bid behind the estimate.
The calculators price the build; we build it. Tell us what you're planning and we'll turn your numbers into a scoped, licensed bid.
- 7+YearsOrange County experience
- B-#1107538LicenseCalifornia General-B
- 37OC Cities + CommunitiesCoverage across all of Orange County
- 4.8★RatingYelp
Direct line
Prefer a phone call?
Service areas
Serving 37 Orange County cities & communities.
- ADU tools in Aliso Viejo
- ADU tools in Anaheim
- ADU tools in Brea
- ADU tools in Buena Park
- ADU tools in Corona Del Mar
- ADU tools in Costa Mesa
- ADU tools in Coto De Caza
- ADU tools in Cypress
- ADU tools in Dana Point
- ADU tools in Fountain Valley
- ADU tools in Fullerton
- ADU tools in Garden Grove
- ADU tools in Huntington Beach
- ADU tools in Irvine
- ADU tools in La Habra
- ADU tools in La Palma
- ADU tools in Ladera Ranch
- ADU tools in Laguna Beach
- ADU tools in Laguna Hills
- ADU tools in Laguna Niguel
- ADU tools in Lake Forest
- ADU tools in Las Flores
- ADU tools in Los Alamitos
- ADU tools in Mission Viejo
- ADU tools in Newport Beach
- ADU tools in Orange
- ADU tools in Placentia
- ADU tools in Rancho Santa Margarita
- ADU tools in Rossmoor
- ADU tools in San Clemente
- ADU tools in San Juan Capistrano
- ADU tools in Santa Ana
- ADU tools in Stanton
- ADU tools in Tustin
- ADU tools in Villa Park
- ADU tools in Westminster
- ADU tools in Yorba Linda
- ADU tools in Unincorporated Orange County
- ADU tools in Unincorporated LA County