ADU Builders in Highland, California
With about 56,000 residents and housing costs that keep climbing, Highland homeowners are turning backyards into income. Our Highland ADU builders handle design, San Bernardino County-area permitting and construction under one contract, built for the hot, dry summers where cooling loads drive design.
Typical cost
$150k–$330k
Permit time
4–8 weeks
Est. rent
$1,700+/mo
Population
56,000
Popular ADU types in Highland
Our most requested projects in Highland are two-story ADUs over garages and detached backyard cottages. Corner lots and alley-access lots in Highland are ideal for ADUs with their own street entrance and separate address.
Design-wise, Highland homeowners in the Inland Empire tend to favor stucco-and-tile ranch styles, cool roofs and shaded patios.
Building an ADU in San Bernardino County
Every Highland ADU we build is engineered around local conditions — especially summer heat, larger lots with long utility runs and wildfire zones. We prepare complete plan sets so the city can approve within the state's 60-day review window, typically 4–8 weeks here.
At $1,700–$2,600 per month in rent, a new ADU in Highland can pay for itself in roughly 9.3 years.
Highland ADU FAQs
How much does it cost to build an ADU in Highland?
Most Highland ADUs we build land between $150k and $330k, depending on size, site work and finishes. Garage conversions sit at the low end; custom two-story units at the high end.
How long does ADU permitting take in Highland?
State law requires cities to act on complete ADU applications within 60 days. In practice, Highland permits typically take 4–8 weeks when plans are submitted complete — which is what our in-house drafting team focuses on.
What can I rent an ADU for in Highland?
Based on Inland Empire rental trends, a new 1-bedroom ADU in Highland commonly rents for $1,700–$2,600 per month, putting typical payback around 9.3 years.
What are the biggest challenges for ADUs in Highland?
In Highland and the wider Inland Empire, the issues we plan around most are summer heat, larger lots with long utility runs and wildfire zones. We review these during a free feasibility check before you commit.
Is two-story ADUs over garages a good option in Highland?
Yes — two-story ADUs over garages are among the most popular projects we build in Highland. Across Highland, we see strong demand for 1-bedroom units around 600 sq ft — the sweet spot for build cost versus rental income.
ADU builders near Highland
Get a free ADU feasibility check in Highland
Tell us about your lot. We'll review zoning, setbacks and utilities and send a ballpark budget — no obligation.