El Dorado Hills, CA · El Dorado County
Detached ADU in El Dorado Hills
Upside ADU builds detached adus in El Dorado Hills, El Dorado County, for a $1,000 deposit with transparent fixed pricing and inspection-tied payments. A typical El Dorado Hills detached adu runs $143,750–$496,800 all-in, and we permit it through the El Dorado County Planning & Building Department end to end.
El Dorado Hills rules that affect a detached adu
El Dorado Hills's mix of lots leaves room for a standalone backyard unit with its own entrance, kitchen, and bath — the highest-value, most-rentable ADU type. The El Dorado County Planning & Building Department reviews detached builds on the standard 60-day clock.
Local permitting: El Dorado Hills permits through the El Dorado County Planning & Building Department, not a city counter. Gated communities like Serrano and Blackstone add HOA design review, and larger custom lots often trigger septic, well, or grading review we scope before bidding.
That's the detached adu-specific picture. For the full El Dorado County rulebook — every setback, height, and owner-occupancy detail — see our Sacramento-region ADU rules guide, and learn how the build type works statewide on our detached adu page.
Why El Dorado Hills homeowners pick Upside
- $1,000 deposit — the CA legal max
- Inspection-tied milestone payments
- We know the El Dorado County Planning & Building Department process
- Transparent, all-in El Dorado Hills pricing
- Property-manager referral when you rent
El Dorado Hills detached adu cost snapshot
A fully independent dwelling in your backyard with its own entrance, kitchen, and bath. Detached ADUs add the most property value and command the highest rents of any ADU type. In the El Dorado County market that prices out to about $288–$414 per square foot, or $143,750–$496,800 for a finished, permitted unit. A typical El Dorado Hills detached adu rents for $2,000–$3,100 a month.
| Size | Typical use | El Dorado Hills all-in cost (2026) |
|---|---|---|
| 500 sq ft | Studio / 1-bed, max cash-on-cash | $143,750–$207,000 |
| 850 sq ft | 1–2 bed, most popular | $244,375–$351,900 |
| 1200 sq ft | 2–3 bed / multigen, max value | $345,000–$496,800 |
Dial in your own number with the ADU cost calculator.
Estimate your ADU
Ballpark 2026 turnkey cost, financing, and rental return for your area.
Estimated turnkey cost
$288–$414 / sq ft · incl. design, permits & construction
Estimates only — 2026 regional ranges, not a bid. Your real price depends on site conditions, finishes, and your lot. We confirm with a free feasibility check.
Detached ADU projects in El Dorado Hills
El Dorado Hills lots are custom by default — Serrano and Blackstone sit behind gated-community design committees that expect the ADU finish to match a high-end main house. Estate parcels run on septic, so capacity gets checked before siting anything. Every detached adu is fixed-price, funded on inspection-passed milestones, and backed by our written guarantee.
Browse finished builds and specs in our ADU project gallery.
Detached ADU in El Dorado Hills — FAQs
A detached adu in El Dorado Hills typically runs $143,750–$496,800 turnkey in 2026, based on $288–$414 per square foot for the El Dorado County market. We confirm your exact number with a free feasibility check.
El Dorado Hills detached adu permits are handled by the El Dorado County Planning & Building Department. El Dorado Hills permits through the El Dorado County Planning & Building Department, not a city counter. Gated communities like Serrano and Blackstone add HOA design review, and larger custom lots often trigger septic, well, or grading review we scope before bidding. We prepare and submit the full package and manage inspections.
A detached adu in El Dorado Hills rents for about $2,000–$3,100 a month in 2026 depending on size and finish. Premium El Dorado Hills properties see outsized appraised-value lift from a well-built detached ADU; rents skew high but the play here is value and family use as much as cash flow.
A detached ADU in the Sacramento region typically runs $165,000–$500,000 in 2026, or roughly $250–$360 per square foot turnkey (design, permits, and construction included). A 750 sq ft 2-bed/1-bath lands around $230,000–$300,000 at mid-range finishes.
State law allows detached ADUs up to 1,200 sq ft. Units under 750 sq ft are exempt from impact fees, which is why many Sacramento homeowners build right at that threshold for the best cost-per-rental-dollar.
Plan on about 6–9 months end to end: 2–6 weeks design, 4–10 weeks permitting (as fast as 30 days with pre-approved plans), and 12–16 weeks construction.
Detached ADU near El Dorado Hills
ADU services in El Dorado Hills
Upside models for Detached ADU
More for El Dorado Hills
Not sure which type fits your lot? See all ADU services in El Dorado Hills or compare every build type on our ADU services hub.
Build your detached adu in El Dorado Hills
Get a transparent El Dorado Hills quote and a free feasibility check for your lot.