CA License #1119373Future Generation
Finished interior of a converted garage now serving as an ADU in Citrus Heights.
Citrus Heights · Garage Conversion

Make the garage a real,
permitted Citrus Heights ADU.

Your garage already has walls, a roof, and a slab — converting it is the cheapest, fastest way to add a legal unit on a flat Citrus Heights ranch lot, when the old floor cooperates.

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Garage Conversion in Citrus Heights — fast facts

CityCitrus Heights
ADU typeGarage Conversion
Contractor licenseCSLB #1119373
Free estimate(916) 677-9774

Last updated

Reuse what's already there

Why a conversion costs the least

Here's the part nobody says out loud: your garage is already a building. Walls, a footing line, a roof, a slab — all standing. A garage conversion borrows every bit of it, which is why it lands under a detached cottage or an attached addition almost every time. Citrus Heights is built for this. The 1950s-70s ranch homes around Birdcage Heights and Mariposa came with attached two-car garages on flat, easy lots, and those convert about as cleanly as anything in the county. We did a 384 sq ft attached garage off Sylvan Old Auburn Road where the existing shell carried so much of the work the owner landed roughly $48K under a from-scratch unit. The catch — there's always one — is you inherit the slab the original builder poured.

Original attached garage on a 1960s Citrus Heights ranch home before conversion to an ADU.
  • Existing walls, roof, and footings get reused instead of rebuilt
  • Usually the lowest-cost route to a permitted ADU anywhere in Citrus Heights
  • Attached ranch two-car garages off Sunrise Blvd and Mariposa convert cleanly
The slab decides everything

What's under your garage floor

This is where most Citrus Heights conversions live or die. A garage slab got poured to park a car, not to carry a heated, occupied dwelling. The 60s and 70s tract floors I've walked around Stock Ranch and the Sunrise Mall corridor often sit four inches thick with no rebar, have shallow perimeter footings, and slope an inch toward where the old door was so rain ran back out to the driveway. For habitable use that usually means underpinning the perimeter, cutting in new footings, or pouring a fresh slab over the top. It's the single line item that swings a conversion budget the hardest — sometimes five figures. We core the slab and check the grade on the first visit so the number isn't a guess you pay for later.

Garage slab and footing work during an ADU conversion in Citrus Heights.
  • Old tract slabs often lack footing depth, rebar, or a level grade
  • Floors slope toward the old door — fine for a car, not for a finish floor
  • We test the slab before pricing, so the pour cost lands up front
Car door to front door

Closing the opening, hitting code

A garage turns livable through a short list of specific moves, and the loud one is the garage door opening. That wide hole gets framed into a real wall — usually a window or two plus the unit's new entry door, which is where most of the curb appeal comes from. Then the things you can't see. Insulation packed into walls and a roof that were never built to hold heat. A code-sized egress window in each sleeping room. And ceiling height: some of the lower-slung 1950s ranch garages around Citrus Heights sit close to the 7-foot edge, and if the structure's too low we raise it or re-roof. None of these steps are exotic. Skip one and you fail inspection — that's the whole reason we run the checklist before demolition, not after.

Converted garage ADU interior with a new wall where the garage door once stood in Citrus Heights.
  • Garage door opening framed into a wall with windows and an entry door
  • Code-sized egress window in every room someone sleeps in
  • Insulation, ceiling height, and re-roofing brought to dwelling standard
Permits, parking, fire walls

The Citrus Heights rules that apply

Three local things shape a conversion here. First, Citrus Heights incorporated in 1997 and runs its own city, so the permit goes through the City of Citrus Heights counter — its own plan-check queue and fee schedule, with city water and sewer behind it. Second, parking: California dropped the requirement to replace the off-street spaces you lose by converting a garage, so you no longer carve a new pad out of the front yard. That one change made thousands of these pencil. Third, fire walls — a detached garage sitting tight to the property line can trigger one-hour fire-rated wall assemblies on the near side. And the detail people miss: power is SMUD, not PG&E, and the older 60s-70s homes here often run a 100-amp panel that needs an upgrade before a dwelling can be energized.

Completed ADU on a Citrus Heights residential lot after a garage conversion.
  • California dropped the replacement-parking rule for garage conversions
  • Detached garages near a lot line can need one-hour fire-rated walls
  • Power is SMUD — older 100-amp panels often need an upgrade first
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Detached ADU800 sq ftStandard

Estimated Construction Cost

$189,000

≈ $236/sq ft · all-in, turnkey

Est. Rental Income$2,800/mo
Annual Income$33,600/yr
Build Timeline5–7 months
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At 7.99% APR over 30 years (illustrative)

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Illustrative only — not a loan offer. Actual rates and terms are set by third-party lenders based on your qualifications.

Frequently asked

Questions, answered

The most common things Sacramento homeowners ask before starting an ADU project.

  • Usually, yes — it's the main reason people start here. You're reusing walls, roof, and footings that already exist, so you skip the two biggest line items of a ground-up build: a new foundation and a new roof. In Citrus Heights a clean garage conversion often lands $40K to $65K under a comparable detached unit of the same size, and this is one of the more affordable ADU markets in the Sacramento area to begin with. The honest caveat is the savings ride on the existing structure cooperating. If the old slab needs underpinning, or the roof has to come up for ceiling height, that gap closes. We core the slab and check the framing before quoting, so you know which version you're buying.
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Converting a Garage Into an ADU in Citrus Heights — A Contractor's Honest Guide

A garage conversion is the ADU most Citrus Heights homeowners should price before anything else — almost always the cheapest, fastest route to a legal second unit. The walls, roof, and footings already exist, so you're finishing a building rather than raising one. But a garage was built to shelter a car, and turning it into a place someone sleeps brings local realities: the old tract slab, ceiling height on the lower 1950s ranches, the SMUD panel question, and the City counter. Here's the version we'd give a neighbor over the fence.

01Section

Why the garage is the cheap path

The reason a conversion wins on price is plain arithmetic. A detached ADU makes you pay for a brand-new foundation and a brand-new roof, and those two items alone can run $40K to $65K on a small unit. A garage conversion reuses both. You're buying interior framing, insulation, windows, finishes — not a whole new shell. For a homeowner staring at a 360 to 480 square-foot garage, that's the difference between a project that pencils and one that doesn't, and Citrus Heights is already one of the more affordable ADU markets in the region.

Citrus Heights is unusually well-suited to this. The housing stock is mostly 1950s through 1970s ranch homes and tract subdivisions — Birdcage Heights, Stock Ranch, the Sunrise Mall corridor, Mariposa, Sylvan Old Auburn Road. Those homes came with attached two-car garages on flat, modest lots, and a flat lot is a quiet gift: no stepped footings, no retaining work. Because an attached garage shares a wall and roofline with the house, it's often close to dwelling-grade in ceiling height and slab quality already, which trims the surprises.