Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
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AfterFast, Reliable Home Additions & ADU Across Citrus
Home addition and ADU construction in Citrus runs $45,000 to $130,000 for a room addition, $90,000 to $220,000 for a new detached ADU, and $30,000 to $80,000 for a garage conversion. Those numbers include what most Citrus homeowners actually run into: LA County permits, fire-hardening requirements, and grading work on old citrus lots. We’re Barrett & Sons Construction, and our Home Additions & ADU team has been building on these foothill properties long enough to know where the quotes in this town fall apart. Call (877) 610-1318 and we’ll walk your lot with you before we put a number on paper.
We work in Citrus regularly, from the 1960s tracts off Baseline Road to the larger parcels east toward the San Gabriel foothills. If your addition or ADU touches an unincorporated lot, a hillside, or a 60-year-old panel, we’ve likely scoped the same project within a mile of you. That’s the value of hiring a local crew that knows this exact pocket of Los Angeles County.
Why Barrett & Sons Construction Is Citrus’s Preferred Home Additions & ADU Company
Tom Barrett founded this company in 1998, and his sons run the crews today. That’s not a marketing line. It’s the reason our customers in Citrus keep our number after the project closes. When you hire us, you get a name on the truck, a license you can look up, and a 90-Day Done Right Promise written into your contract. If something isn’t right, one call brings Tom back.
We know the difference between pulling a permit in Azusa and pulling one in Citrus. One goes through City Hall. The other goes through LA County’s EPIC-LA portal and County inspection scheduling. That distinction adds real lead time if you don’t know the territory. We do. Every scope, every allowance, and every price change we write lands as a written change order before work happens. No surprises on the final bill.
Our crew members are background-checked and uniformed. A live person answers the phone when you call (877) 610-1318, not a voicemail tree. And we publish our standing offers: $40 off any repair over $200, a free second opinion on any written estimate, no trip charge inside the county, and a permanent 10% senior and veteran discount. If you’re comparing quotes in Citrus, bring us the other guy’s bid. We’ll walk it with you line by line.
Our Home Additions & ADU Services in Citrus
ADU Design & Permitting
This is where Citrus projects succeed or stall before ground breaks. Every permit here runs through LA County’s EPIC-LA portal, which means plan checks and inspections are scheduled through the County, not a city hall. A contractor who rushes this step adds weeks. We scope the permit set correctly the first time, including any Chapter 7A fire-hardening assemblies the County will require on your lot.
Garage Conversion ADU
Many Citrus homes from the 1950s and 1960s have attached garages that are structurally sound but electrically undersized. Converting one into an ADU in Citrus typically runs $30,000 to $80,000. The variables that move that number: panel capacity, footing depth, and whether your garage sits inside the Very High Fire Hazard Severity Zone. We’ll tell you before you spend a dollar.
New Detached ADU
A detached ADU on a Citrus lot gives you the most layout freedom, but it also brings grading and drainage into play. Old citrus groves left irregular lot shapes and swales that don’t show up on a title report. We’ve scoped properties off Baseline Road where the drainage engineering alone was a five-figure line item. Better to know on day one. We price it in writing.
Junior ADU & Interior Conversion
If you’ve got an existing bedroom suite, a Junior ADU is often the fastest path to a legal rental unit. Interior conversions skip the foundation work but still trigger County inspection requirements, including egress and smoke separation. We handle the full permit path in Citrus so you’re not guessing what the inspector will flag.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Citrus
We install materials you can look up, not mystery brands off a van. On Home Additions & ADU projects in Citrus, that means specified product lines like Schluter for waterproofing, Sterling for fixtures, and GAF for any roofing assembly the County requires under Chapter 7A. If your ADU needs a roof that meets ember-resistant standards, we spec GAF products that actually pass the plan check. You’ll see the brand names in your written scope before work starts.
Common Home Additions & ADU Problems We See in Citrus Homes
- Wrong jurisdiction permits. A contractor working in Azusa pulls a city permit. He crosses into Citrus and pulls the wrong one. The project stalls before rough-in, and the homeowner eats the delay. We check jurisdiction on every scope, every time.
- Unforeseen grading and drainage. Old citrus lots hide swales and sheet-flow patterns that only appear during a heavy winter rain. Without grading engineering in the permit set, an ADU foundation can shift or flood. We price drainage before we pour.
- VHFHSZ fire-hardening red tags. Citrus sits largely in a Very High Fire Hazard Severity Zone. Missing ember-resistant vents or a Class A roof assembly gets a red tag on final inspection. We write those assemblies into the plan check from the start.
- Undersized 1960s electrical panels. Most postwar tract homes here weren’t built for the electrical load of a second dwelling. We re-feed the service or add a subpanel before framing, not after the drywall is up.
Pricing for Home Additions & ADU in Citrus, CA
The market in Citrus carries a specific cost floor because of its unincorporated county status. Here’s what we quote today:
| Project Type | Citrus Price Range |
|---|---|
| Home Addition | $45,000 - $130,000 |
| ADU Construction | $90,000 - $220,000 |
| Garage Conversion | $30,000 - $80,000 |
A room addition in Citrus that requires County plan check, fire-hardened assemblies, and hillside drainage work will land higher than a flat-lot job in an incorporated city. That’s not markup. That’s the cost of doing it legally in this jurisdiction. We give you a written line-item scope before you sign, and every price change after that arrives as a written change order. Call (877) 610-1318 for a free estimate on your specific lot. The ask is always the estimate, never the job.
We Also Serve Cities Near Citrus
Barrett & Sons Construction covers the foothill communities around Citrus, including Azusa, Vincent, Covina, and Glendora. If you’re just outside the 91702 ZIP boundary, call us anyway. We’ll tell you whether your property falls in our service area and what jurisdiction your permit runs through.
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 - Home Additions & ADU in Citrus
Because Citrus is unincorporated, so every permit runs through LA County’s EPIC-LA portal and County inspection scheduling, not a city hall. That administrative shift adds plan check and inspection lead time that a contractor unfamiliar with the jurisdiction won’t anticipate. A permit filed through the wrong office stalls before rough-in. That’s why we verify jurisdiction before we start any scope in Citrus. Call (877) 610-1318 and we’ll tell you exactly which office your project runs through.
Probably yes, especially after any significant wildfire on the slopes above you. Hillside additions in Citrus trigger geotechnical review because of debris-flow and erosion risk. A soils report costs money up front but protects you from a foundation that shifts after a wet winter. We’ll scope it before we quote. Call (877) 610-1318 and we’ll talk through your specific slope.
Yes, but the existing foundation and chimney may need bracing before the County signs off. We scoped an ADU on an irregular citrus-grove lot off Baseline Road where the original 1960s panel and unreinforced chimney couldn’t carry the new subpanel for the detached unit. Our crew re-fed the service, braced the chimney, and wrote the fire-resistant Chapter 7A venting and roof assembly into the permit set before the County inspector ever set foot on site. Inspection sign-off came on the first pass. If your garage conversion needs that work, you’ll see it in writing before we start.
Much of Citrus sits in a Very High Fire Hazard Severity Zone, which triggers California Chapter 7A. You’ll need ember-resistant vents, a Class A roof assembly, and specific eave and exterior wall details. We spec products like GAF for roofing and Schluter for waterproofing because we know they pass County plan check here. The exact requirements depend on your lot’s designation. Call (877) 610-1318 and we’ll pull your property’s VHFHSZ status. Free estimate, no obligation.
Yes, and skipping it is the most expensive mistake we see in Citrus. Old citrus groves left irregular lot shapes and drainage swales that don’t show up on a title report. A contractor who quotes without grading and drainage engineering hits an unforeseen debris-flow swale that eats a $12,000 change order. We price it in the original scope. That’s the whole point of written change orders. Call (877) 610-1318 for an exact scope on your lot, in writing.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Citrus and the surrounding foothill communities since 1998.