Berkeley ADU Cost & Builders — 2026
Detached Berkeley ADU builds run $189K–$473K all-in ($420–$578/sq ft) once permits, SDC, utility hookups, and finishes are stacked. Compare costs, zoning, rental income, and pull 3 verified quotes below.
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Berkeley ADU Costs by Build Type
Pricing is derived from the Denver city average adjusted for Berkeley's premium cost tier (1.05× baseline).
| Build type | 2026 cost range | Notes |
|---|---|---|
| Detached new build | $189K–$473K | Stand-alone backyard unit, 600–1,000 sq ft |
| Attached addition | $161K–$402K | Bumped off existing structure |
| Garage conversion | $85K–$213K | Existing shell reused |
| Basement / interior | $104K–$260K | Where lot type permits |
Berkeley ADU Rental Income (2026)
Average rents tracked from Denver MLS, Zillow, and local rental data. ADUs typically command a 5–15% premium over comparable units due to newer construction.
| Unit type | Monthly rent | Annual gross |
|---|---|---|
| 1 bedroom | $1,700–$2,200 | $20K–$26K/yr |
| 2 bedroom | $2,300–$2,950 | $28K–$35K/yr |
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Berkeley Zoning, HOA & Historic Notes
- Community plan / overlay
- Northwest Denver Neighborhood Plan
- Permit considerations
- Most lots are alley-accessed and ADU-ready. Tennyson Street commercial spine boosts rental demand within walking distance.
- HOA situation
- Largely HOA-free single-family lots.
Always pull a property profile on your specific lot before designing — setbacks, height limits, and FAR can change parcel-by-parcel inside Berkeley.
Berkeley ADU FAQs
How much does an ADU cost in Berkeley, Denver?
Berkeley ADUs typically run $189K–$473K all-in for a 600–1,000 sq ft detached unit in 2026. Costs trend above the Denver city average due to higher land values and finish expectations. Per square foot pricing is typically $400–$550.
Are there special permits or overlays for ADUs in Berkeley?
Most lots are alley-accessed and ADU-ready. Tennyson Street commercial spine boosts rental demand within walking distance. Always pull a property profile before designing — Berkeley's Northwest Denver Neighborhood Plan can change setback and height requirements lot-by-lot.
What can I rent a Berkeley ADU for?
As of 2026, Berkeley commands roughly $1,700–$2,200 for a 1-bedroom ADU and $2,300–$2,950 for a 2-bedroom. Rents lean higher with off-street parking, in-unit laundry, and walkability to transit or commercial corridors.
Are HOAs or historic districts an obstacle in Berkeley?
Largely HOA-free single-family lots.
How do I get a quote from a verified Berkeley ADU builder?
Submit your lot details using the quote form on this page. We'll match you with up to 3 Berkeley-area builders who have completed projects within 5 miles. There's no cost or obligation, and quotes typically arrive within 48 hours.
Related Denver ADU Resources
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