







A free site visit, a check of what your lot allows and a written, line-item price.
Get your free estimateFast, Reliable Garage Conversion Contractor Across Citrus
Garage conversions in Citrus typically run $95,000 to $165,000 before permit fees, depending on whether you’re reworking an attached garage or a detached structure on a county lot. We get calls from Citrus homeowners on Barranca Street and along East Puente Street who want to know if their 1950s garage can legally become a bedroom, a rental unit, or an in-law suite. The answer is usually yes, but the county’s setback rules and your panel’s amperage will shape the scope. Call (559) 238-9583 and we’ll walk you through exactly what applies to your address.
Why Fielding ADU West Covina Is Citrus’s Preferred Garage Conversion Contractor Company

Fielding ADU Builders is the ADU and garage conversion specialist inside the Garrison Partners family, which has been building to The Garrison Standard since 2006. Reed Calloway leads our team, and he runs every Citrus job the same way: a written price before any work starts, permits pulled by the book, and a one-year guarantee in writing. That guarantee is called the 365-Day Done Right Promise. If something fails inside that year, we come back and correct it at no charge.
Our crews have been through Citrus enough to know the difference between what L.A. County Public Works will approve and what a city like West Covina or Diamond Bar would flag. That county-specific knowledge changes how we scope a garage conversion before we quote it. A background-checked, uniformed crew shows up at your property, and a live person answers our phone at noon or midnight. No voicemail queue.
We also work with the prefab platforms homeowners in Citrus are already researching, including Abodu, Cover, and Dvele. If a modular ADU fits your garage footprint better than a conventional build, we’ll say so. The written price goes in front of you before a single nail is driven. That’s the Garrison Code: show up in the window, price in writing, build by the book, leave it clean, stand behind it for a year.
Garage Conversion to Living Space in Citrus
Garage Conversion to Living Space in Citrus means taking an existing garage, attached or detached, and turning it into a permitted dwelling area with insulation, drywall, electrical, a bathroom, and a proper HVAC system. On Citrus’s small R-1 lots, the garage footprint is often the smartest place to add square footage because it already sits inside the county’s 5-foot side and 10-foot rear setback lines. You’re not fighting for a variance; you’re using what the parcel already allows.
Working With the Existing Footprint
Most Citrus garages from the 1950s through the 1970s were built with a slab, stick framing, and a roof tied to the main house or standing alone at the rear of the lot. We keep the slab and framing where they’re sound, then add what a dwelling needs: a mini-split for cooling, a subpanel for the added load, and insulation rated for Citrus’s hot summers. Keeping the original footprint means the county sees a conversion, not an expansion, which keeps the permit path simpler.
Drainage and the Unseen Costs
On a Citrus lot, the cast-iron waste line under that old garage is likely original. Replacing it is not optional if you’re adding a bathroom, and that’s a real line item. We also check the sewer or septic clearance before we quote. The last thing a homeowner on Citrus’s unincorporated lots wants is to finish a conversion and find out the county requires additional sewer capacity work. Our Garage Conversion Contractor team scopes that before the written price goes out.
Garage to Bedroom Conversion in Citrus

Garage to Bedroom Conversion in Citrus is the most common request we field from homeowners who need space for an aging parent, an adult child, or a home office with a door that closes. The job turns a cold, unconditioned garage into a sleeping room with egress, insulation, flooring, lighting, and heating and cooling. On Citrus’s compact lots, a detached garage at the rear corner of the parcel often becomes the quietest room in the house.
What a Bedroom Needs to Be Legal
A bedroom under county code needs an egress window or door, a heat source, a smoke detector tied to the house, and minimum ceiling height and square footage. We’ve converted garages on streets off Citrus Avenue where the existing side door became the egress route, saving the owner from cutting a new window through a bearing wall. The county cares about life safety, not square footage. Get the egress and the heat right and the permit is straightforward.
Mini-Splits and Citrus Summers
Citrus’s hot, dry summers mean a garage bedroom without cooling is not a bedroom, it’s a storage room. We spec mini-split heat pumps for almost every garage conversion here because they handle both the August heat and the mild winter chill, and they don’t require ductwork through a structure that was never designed for it. High UV exposure in this part of the San Gabriel Valley also ages exterior materials faster, so we use siding and trim rated for direct sun, including James Hardie products where the design calls for them.
Trusted Brands We Service in Citrus
We install and service the garage conversion platforms Citrus homeowners ask about most. Our crews have built with Abodu and Cover prefab units where the garage footprint and lot access suit a modular approach. We also do conventional builds with James Hardie siding and Tuff Shed-style structures when a stick-built conversion makes more sense for the parcel. Fielding ADU Builders coordinates dispatch from our Los Angeles metro office, and crews serve Citrus local jobs directly. When you call about a garage conversion in Citrus, you’re talking to someone who knows which of these systems will clear county setbacks on your specific lot, not someone reading a brochure.
Common Garage Conversion Contractor Problems We See in Citrus Homes
- Assuming city of Los Angeles codes apply. Citrus is unincorporated Los Angeles County, which means L.A. County Public Works permits, not city of L.A. permits. A contractor who doesn’t know the difference will waste weeks on the wrong application.
- 100-amp panels that can’t carry the load. The original electrical service on most 1950s-70s Citrus homes can’t handle a converted garage with a mini-split, a bathroom, and appliances. Upgrading to a 200-amp panel is often the single biggest line item outside of construction.
- Cast-iron waste lines at the end of their life. The plumbing under an old Citrus garage is usually original cast iron, and it’s often cracked or corroded. If you’re adding a bathroom to the conversion, that line comes out.
- Detached garages encroaching on the 10-foot rear setback. Some older Citrus garages sit closer to the rear property line than current county rules allow. If the structure encroaches, the conversion may need a variance, or the design may need to shift to keep the existing footprint legal. We check this before we quote, not after you’ve spent money.
Pricing for Garage Conversion Contractor in Citrus, CA
A garage conversion to living space in Citrus typically runs $95,000 to $135,000 for a standard attached single-car garage with a bathroom and mini-split. A detached garage to a full ADU with a kitchen runs $130,000 to $165,000. A garage to bedroom conversion without a bathroom starts around $75,000. What moves the number: the panel upgrade (100-amp to 200-amp runs $3,500 to $5,500 in this area), the waste line replacement if cast iron is shot, and whether the structure sits inside county setbacks. We hand you a written price before any work starts, and that number is the number on the final invoice. Call (559) 238-9583 for a free estimate on your Citrus property.
We Also Serve Cities Near Citrus
Fielding ADU West Covina handles garage conversions throughout the San Gabriel Valley. If you’re in Citrus or a neighboring community, we can scope your project. We serve West Covina, Diamond Bar, Covina, and Hacienda Heights regularly, and the same written-price-first policy applies. Call (559) 238-9583 and we’ll schedule a site visit.
Serving Citrus, CA - Our Local Coverage Area
We’re based in the Citrus area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Garage Conversion Contractor in Citrus
Yes, you need L.A. County Public Works permits for a garage conversion in Citrus; it’s unincorporated county, not a city permit. Septic setback matters because if your converted garage adds a bathroom and the septic tank or leach field sits inside the county’s required clearance, you’ll need a septic system evaluation or a redesign before the conversion can be approved. We check the septic layout early in the scoping process so it’s handled before the quote, not discovered during framing. Call (559) 238-9583 and we’ll pull your parcel’s records.
Yes, in most cases, because the existing garage footprint is typically grandfathered even if the building sits closer to the side line than current rules allow. The county’s 5-foot side setback applies to new structures; a conversion that keeps the original walls and roofline usually doesn’t trigger a setback review. If you’re expanding the footprint outward, that’s where the setback gets enforced. We confirm this on a per-parcel basis before you spend a dollar on plans.
Citrus’s hard water, which comes from imported supplies, shortens the life of new plumbing components like tankless water heaters, valves, and fixtures in a garage ADU. Scale builds up faster here than in neighboring cities with softer municipal water. We spec fixtures and water heaters rated for hard water where it matters, and we’ll note that maintenance reality in your written quote so it’s not a surprise a year after the conversion is done. Call (559) 238-9583 for an exact scope on your property.
A 100-amp to 200-amp panel upgrade for a garage conversion in Citrus runs $3,500 to $5,500, including the new panel, meter work, and county inspection. If your garage is detached and we’re running a subpanel from the main house, the subpanel itself adds $1,200 to $2,000 depending on the wire run. The first number we verify on a Citrus quote is the existing service size, because it dictates whether a mini-split and a bathroom can be added without touching the panel. We include the panel scope in your written price, not as a change order later.
Yes, an attached carport can be enclosed and converted into a bedroom or ADU under L.A. County rules, but the carport’s original slab and roof framing have to meet current structural standards for a habitable room. Carports on Citrus lots often have shallow footings and posts that were never designed to carry walls and insulation. We evaluate the slab and the roof load before we quote, and if the structure is too light, we’ll tell you what reinforcing it costs rather than building something that won’t pass inspection.
Ready to talk about your garage? Call (559) 238-9583. Reed and the Fielding ADU West Covina team will put the price in writing before any work starts, and stand behind it for a full year. The estimate is free, and a live person answers the phone.
Written by Reed Calloway, Owner at Fielding ADU West Covina, serving Citrus, CA.




