The Short Answer: Smaller Space, Same Level of Detail
You lived through the reno. Maybe it was a full kitchen gut, a garage-to-ADU (accessory dwelling unit) conversion under California’s new housing laws, or a backyard addition in one of Simi Valley’s established neighborhoods. The build is done. Now you want one number: what will the post construction cleaning cost?
Here’s the straight answer. ADU and garage conversion cleanups in Simi Valley typically cost less than a full-home post-construction clean, because the square footage is smaller. But they still require the same level of detail. Drywall dust, paint overspray, and new flooring and grout haze don’t care about square footage.
Pricing follows crew hours, and crew hours follow three things: the size of the space, the dust load the trades left behind, and how fragile the new finishes are. That’s also why the walkthrough exists: two ADUs with the same square footage can differ by hours of work. So there’s no flat rate. Here’s what the estimator looks at during the free on-site walkthrough:
- Size: a 400-square-foot ADU is a smaller job than a 3,000-square-foot whole-home renovation
- Dust level: how much drywall dust, overspray, and debris the trades left behind
- Finish types: new hardwood, cabinets, and fixtures that need careful, non-abrasive handling
Kelly Cleaning provides free on-site estimates for every Simi Valley project, large or small. For the full scope of what that clean includes, start with post-construction cleaning in Simi Valley. The rest of this guide breaks down each of those three things, so you know exactly what an estimator is looking at when they walk your unit.
Square Footage: Why an ADU Costs Less Than a Whole Home
Square footage sets the baseline. A detached backyard ADU or a converted garage is a fraction of the floor area of a whole-home renovation, so it takes fewer crew hours to reset. That’s the main reason these cleanups typically come in below a full-house clean.
But small doesn’t mean simple. We’ve been back to:
- Homes after full bathroom remodels
- Garage conversions needing deep dust removal
- ADUs with construction debris still sitting in vents
- Kitchen builds with dust on brand new cabinets and floors
An ADU packs a kitchen, a bathroom, flooring, and windows into one compact space. Every one of those zones needs the same detail work a big house gets. The room count shrinks. The checklist doesn’t.
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Dust Level: What the Trades Actually Left Behind
The dust doesn’t stop when the crew leaves. Your floors are layered in dust. There’s paint mist on your window panes. Every surface, from ceiling fans to baseboards, has a fine white coating that never seems to disappear. This is the part nobody warns you about: post-construction cleaning in a real home is brutal.
And it isn’t just dust. It’s everything left behind:
- Masking tape still stuck to your floor trim
- Grout haze clouding your new tile
- Footprints tracked across hardwood
- Plastic shavings in the closet corners
- Sawdust in every vent, even the ones you covered
And somehow, no one else is responsible for any of it. The heavier that layer is, the more crew hours the job takes. That’s the second thing the walkthrough sizes up. We’re not showing up with a mop. We’re showing up with:
- HEPA (high-efficiency particulate air) vacuums that pull drywall dust out of vents and carpet
- Edge tools that dig into crevice corners, trim lines, and hardware
- Microfiber teams that wipe everything top to bottom, twice if needed
Because in Simi Valley, the dust doesn’t quit, and neither do we. We clean like the only people coming over after us are your guests. We get in, clean it to the level it should’ve been handed off at, and don’t leave until it’s actually livable.
Finish Types: New Surfaces That Scratch Easy
The third thing the estimator checks is what your new space is made of. New surfaces are easy to damage during cleanup, and careful handling takes crew time. A crew that prices these jobs knows that:
- New surfaces scratch easy, so you need non-abrasive cloths
- Ventilation systems can blow dust back for weeks if not handled
- Paint overspray and caulk smudges need removal, not just masking
Fragile finishes take more time and more care, and that shows up in the estimate. New engineered floors can’t take a standard scrub; they need their own careful method, not a quick once-over. And if the HVAC (heating, ventilation, and air conditioning) system ran during construction, drywall dust is sitting inside the ducts. Proper air duct cleaning in Simi Valley keeps that dust from blowing back into your finished space for weeks.
Two more finish items that matter for ADUs:
- ADU conversions and garage remodels across Simi Valley often include new carpet in living areas. Our carpet cleaning in Simi Valley extracts embedded drywall dust and construction grit before the space is occupied.
- New windows collect paint overspray and adhesive film during a build, so the post-construction scope includes clearing all interior and exterior glass.
Maid Service or Post-Reno Crew: Which One Are You Pricing?
They finished the build. The ADU is framed, drywalled, and painted, or the master bathroom finally has that walk-in shower. But now everything’s dirty. We handle the stuff homeowners Google at 11pm:
- “How do I get construction dust off walls?”
- “Is there a company that does post-reno cleaning near me?”
- “Can I clean drywall dust myself or do I need pros?”
Search “post construction cleaning near me” and you’ll mostly get maid services and gig apps. You don’t need a “maid service.” You need a crew that knows:
- How to lift paint smears from finished flooring
- How to clean construction adhesive off of windows
- How to handle fragile surfaces like new cabinets, fixtures, and engineered floors
That difference is what you’re really pricing when you compare quotes. Kelly Cleaning doesn’t roll up with brooms. We show up with:
- HEPA vacs for real dust removal
- Specialized cleaning agents for adhesive and grout residue
- Detail tools for windows, switch plates, outlet covers, light fixtures, and fan blades
- Crews who clean with the punch list in mind
We’ve been doing this in Simi Valley homes for 40+ years. From Bridle Path ranch remodels to Mountain Gate kitchen redos, we know the local layouts, the finish risks, and the post-construction chaos you’re left with. We don’t care how good the contractor was. If we’re the last team through the door, the home’s going to shine.
How the Free On-Site Estimate Works
Most of our clients don’t come through ads. They come through lived experience. One remodel cleaning leads to the next. A neighbor recommends us after a kitchen redo. A family calls back after we cleaned their garage conversion. Then their aunt calls us for her new ADU.
That’s how it works when the job gets done right, and the home actually feels clean again. They call us because:
- We show up when we say we will
- We protect their finishes, fixtures, and floors
- We don’t just clean, we reset the space, top to bottom
Because size, dust level, and finish types vary so much from one project to the next, we quote by walking the actual space, not by guessing over the phone. During the free walkthrough, the estimator:
- Measures the space, so the quote reflects your ADU, not an average
- Checks the dust load the trades left behind, from vents to baseboards
- Notes fragile finishes, like engineered floors and new cabinets, that need slower, non-abrasive handling
The on-site estimate is free for every Simi Valley project. And that first walkthrough is usually where the word-of-mouth starts: one honest quote, one clean handoff, and the neighbor calls next.
The Bottom Line on ADU Cleanup Cost
Don’t spend the next three weeks wiping surfaces over and over. Don’t wait for the dust to “settle.” Here’s the short version:
- An ADU cleanup typically costs less than a whole-home clean, but demands the same detail
- Size, dust level, and finish types all shape the job, so a free on-site estimate beats any flat guess
- The right crew brings HEPA equipment, specialized agents, and a punch-list mindset
For the full scope, credentials, and scheduling details, start with our post-construction cleaning service for Ventura and Santa Barbara counties, or call (805) 644-5308 for a free on-site estimate.
We’ll take what the contractors left behind, and leave you with a home you actually want to live in again.
