ADU frequently asked questions
Sacramento ADU questions, answered straight
The most-asked questions about building an ADU in the Sacramento region — cost, permits, timeline, the $1,000 deposit cap, financing, and rental income — answered by a dedicated ADU builder. Each company question is answered here; every deep topic links to its full guide.
Top ADU questions
Cross-cutting questions about working with Upside — the down payment, warranty, timeline, areas served, and how clients pay. These are answered in full here; topic-specific questions further down point you to the guide that owns the deep answer.
Working with Upside — the essentials
One team owns your whole ADU — feasibility, design, engineering, permitting, and construction — under a single fixed-price contract. Upside is a dedicated Sacramento-region ADU builder, not a general remodeler. You get a builder on the phone, a published price, and a written guarantee, not a call center.
$1,000 — the legal maximum down payment for a home-improvement contract in California (or 10% of the contract, whichever is less). Everything after that is an escrow-style milestone draw tied to an inspection you can see, so you never pay ahead of completed, verified work.
Every Upside ADU carries a written one-year workmanship warranty, a two-year warranty on the mechanical, electrical, and plumbing we install, and California's ten-year statutory structural warranty. It's written into your contract before you sign, plus a fixed-price and on-time promise.
Permitting runs on California's 60-day clock — as fast as ~30 days where the city accepts pre-approved plans. Construction adds roughly 3–4 months depending on ADU type and site work, so most projects finish in about 6–9 months from signed contract to move-in.
Upside builds across 21 cities in the greater Sacramento region — Sacramento, Placer, El Dorado, and Yolo counties — including Sacramento, Elk Grove, Roseville, Folsom, Citrus Heights, and Carmichael. Each city page covers the local permit rules and setbacks that actually apply to your lot.
Most homeowners tap home equity — a HELOC or cash-out refinance — or a renovation/construction loan, then pay Upside in $1,000-down milestone draws. The CalHFA ADU grant is exhausted and not currently funded. Our financing page connects you with lender partners for your specific build.
Cost & pricing questions
Short answers below; the full cost breakdowns, published price tables, and the live estimator each live on their own page.
How much does an ADU cost in Sacramento?
Turnkey ADUs in the Sacramento region run from about $85k for a junior ADU and $95k for a garage conversion, up to roughly $165k–$500k for a detached unit — about $250–$360 per square foot, design and permits included.
Full cost breakdownWhat does Upside actually charge?
Upside publishes prices by ADU type and size instead of hiding them behind a consultation — a deliberate open lane against competitors who won't quote. See the price-by-type tables and what's included.
See published pricingCan I get a price for my specific lot?
Yes. The cost calculator turns your ADU type and size into a real dollar range in about a minute, then hands off to a feasibility check for your address.
Estimate your ADUWill an ADU raise my property taxes?
Only the new ADU is reassessed and added to your bill — your existing home keeps its current (often much lower) Prop 13 assessment. The blended math, with Sacramento examples, is in the guide.
How ADU property tax worksRules & permit questions
Setbacks, size limits, owner-occupancy, and the 2026 law changes — quick answers here, with the full local and statewide rules in the guides.
What are the ADU setback and size rules in Sacramento?
State law allows detached ADUs up to 1,200 sq ft with 4-foot side and rear setbacks, and units under 750 sq ft are exempt from impact fees. Local specifics vary by jurisdiction — the rules guide breaks them down.
Sacramento rules & setbacksDo I need owner-occupancy to build an ADU?
Standard detached and attached ADUs in California have no owner-occupancy requirement. Junior ADUs (JADUs) generally do require the owner to live on the property. The rules guide covers the current statewide standard.
Permit & occupancy rulesWhat changed in California ADU law for 2026?
2026 brings further statewide loosening — streamlined approvals, separate-sale pathways (AB 1033), and tightened ministerial review windows. The law hub tracks the current bills and what they mean for your build.
2026 ADU law changesDo I have to add parking for my ADU?
In most of the Sacramento region you don't — ADUs near transit and garage conversions are exempt from replacement-parking rules under state law. The rules guide covers the exact exemptions by jurisdiction.
Parking & permit rulesFinancing questions
How people pay for an ADU, what Upside can help arrange, and the current grant status — including the fact that the CalHFA ADU grant is exhausted.
What financing options can Upside help with?
Upside works with lender partners on HELOCs, cash-out refinances, renovation loans, and construction loans, and structures payments around the $1,000-down milestone schedule. The financing page covers the apply-and-get-funded path.
Finance your buildHow does ADU financing actually work in California?
Most owners use home equity (HELOC or cash-out refi) or a construction loan; each has different rates, draw timing, and eligibility. The financing guide explains the mechanics neutrally, with no application pressure.
How ADU financing worksIs the CalHFA ADU grant still available?
No. The CalHFA $40,000 ADU grant program is exhausted and not currently funded — a fact many sites still get wrong. The financing guide tracks current program status and the alternatives that remain.
Grant status & alternativesProcess & timeline questions
What the build looks like phase by phase, what working with us feels like step by step, and how long permitting really takes in the Sacramento region.
What are the phases of an ADU build?
Site evaluation, design and engineering, permit submittal and plan check, sitework and foundation, framing through finish, then final inspection and occupancy. How It Works walks each phase with its real week-range.
The build, phase by phaseWhat does working with Upside look like, step by step?
Consult and feasibility, design and quote, permits (we handle the city), then build and move-in. The how-it-works page covers the buyer-side journey and exactly which decisions are yours versus ours.
How working with us worksHow long does permitting take in the Sacramento region?
California caps ADU permit review at 60 days, and jurisdictions that accept pre-approved plans can clear in about 30. We submit a complete package the first time to avoid plan-check round trips.
Permitting & timeline detailADU type questions
Detached, attached, garage conversion, junior, and multigenerational ADUs each have their own page — here's the quick version of how they differ.
What's the difference between an attached and detached ADU?
A detached ADU is a standalone backyard structure with the highest rent and resale lift; an attached ADU shares a wall and utilities with your home, often cutting site and trenching cost. Each service page goes deeper.
Detached ADUsIs a garage conversion the cheapest way to get an ADU?
Usually, yes — reusing an existing slab and walls makes garage conversions the lowest cost-per-square-foot path to a legal unit, from about $95k, with no replacement parking required in Sacramento.
Garage conversion ADUsWhat is a Junior ADU (JADU)?
A JADU is a unit up to 500 sq ft created inside your existing home's footprint, with its own entrance and an efficiency kitchen — the lowest-cost legal ADU, from about $85k. It can be paired with a detached ADU.
Junior ADUsCan an ADU work for aging parents?
Yes — multigenerational living is the most common reason ADUs get built. We design single-level units with zero-step entries, wider doorways, and curbless showers so parents age in place next door.
Multigenerational ADUsService-area questions
Where Upside builds, how to tell if your lot is in range, and where to see the completed projects behind the numbers.
How do I know if I'm in Upside's service area?
If you're in Sacramento, Placer, El Dorado, or Yolo county, you're almost certainly in range. The service areas directory lists all 21 cities we build in, each linking to that city's local ADU details.
See all service areasDo you build ADUs in my specific city?
Likely — from Sacramento and Elk Grove to Roseville, Folsom, and beyond. Each city hub covers that jurisdiction's permit office, setbacks, and typical cost band so you see the local picture before you call.
Find your cityWant to see real Upside projects?
Browse completed builds by type and city, with sizes, costs, and timelines, on the projects page — the proof behind the published prices and the warranty.
See completed projectsAnswers reviewed by Upside's licensed lead builder and updated for 2026 Sacramento-region figures. Pricing, permit timelines, and grant status reflect current California ADU law. For a number tied to your exact lot, run the cost calculator or browse all ADU guides.
Still have a question?
Talk to a builder, not a call center. Get a transparent quote and a free feasibility check for your specific Sacramento-region lot.