Free roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Fast, Reliable Roof Inspection Across Simi Valley
A roof inspection in Simi Valley typically runs $250 – $550 for a standard single-family home, while acreage parcels with detached shops, barns, or ADUs usually land between $600 – $1,100 because each structure has to be walked and scoped separately. We dispatch background-checked, uniformed technicians from our Los Angeles office to every Simi Valley neighborhood, including the ranch tracts above Wood Ranch, Bridle Path, Tapo Canyon, and the older subdivisions along Cochran and Sycamore. If you’re looking at a roof that’s 20 years old or older, or you just got hit by Santa Ana winds that ripped shake courses off the north slope, call (361) 320-9467 and we’ll get you scheduled. The price you’re quoted goes on paper before any work starts, and it doesn’t move at the door.
Why Brennan Roofing Is Simi Valley’s Preferred Roof Inspection Company
Simi Valley homeowners deal with a specific set of roofing problems that a roofer from the Valley floor won’t always catch. Thermal cycling from hot, dry summers followed by cold winter nights breaks down underlayment faster than most homeowners expect. Santa Ana winds funneling through the Santa Susana Pass rip ridge caps and shake courses off roofs in Wood Ranch and the more exposed hillside lots. And the city’s enforcement of the 2008 Building Code’s Class A assembly requirement means a simple inspection often turns into a retrofit planning conversation. We know all of that before we step onto your roof because Roof Inspection is a core part of what we do, and we’ve walked enough Simi Valley roofs to know what the wind does to them.
Every technician who steps onto your property is background-checked and in uniform. You’ll know exactly who’s on your roof. Our work falls under The Garrison Standard: a written price before any work starts, a live person answering the phone when you call, and a 365-Day Done Right Promise in writing on every job. If an inspection finds something and a repair fails within that year, we come back at no charge. That’s the whole agreement, and it’s the same on every job we run in Simi Valley.
Travis Oakley sets the standard for how our inspections are scoped and reported. When you call (361) 320-9467, you’re not getting a call center. You’re getting someone who understands what a 1972 ranch house on spaced sheathing looks like from the attic side, and who knows that a detached shop off Tapo Canyon Road needs its own square count, not a drive-by glance. That level of attention is why homeowners from Moorpark to Thousand Oaks keep our number in their phones.
Roof Inspection Services in Simi Valley
Roof Inspection Services in Simi Valley are structured differently than in a city like Thousand Oaks because of the acreage. We walk the main house first, then every detached structure separately. A 1970s ranch house on Bridle Path with a detached three-car shop and a small barn is three separate inspections: three roofs, three sets of decking conditions, three different flashing details. We scope each one as its own square count and quote it as its own line item, because that’s how the permit and the material order will actually work.
A standard inspection covers decking, underlayment, flashing at chimneys and plumbing penetrations, drip edge, ridge caps, and ventilation. We get on the roof and walk it, then we go into the attic and look at the underside of the sheathing. We do not quote from the ground or from a drone. The real condition of a roof only shows itself once you’re standing on the decking and looking at the fastener pattern.
What a Full-Structure Inspection Includes
Every inspection starts with a walk of the main roof surface, then the attic, then the eaves and fascia. We look for wind-uplift damage at the corners and along the ridge, missing or lifted flashing, deteriorated underlayment, and any sign that water is getting under the shake or shingle layer. We document everything with photos so you see exactly what we see.

Outbuilding and ADU Scoping
Detached shops, barns, and ADUs get their own inspection and their own line item. On acreage, those structures often fall under Ventura County fire-hazard setback and access rules instead of city tract enforcement, which changes how they have to be reroofed. We flag that before anyone orders material, not after the building inspector shows up.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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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.
Hail Damage Roof in Simi Valley
Hail Damage Roof in Simi Valley is less common than wind damage, but when it hits, it usually hits the older wood-shake roofs hardest. Hail fractures shake tabs and drives cracks through brittle, sun-baked underlayment. The houses in the original 1960s and 1970s tract neighborhoods along Sycamore and Cochran are the most exposed, because those roofs are already at end-of-life and have very little impact resistance left.
After a hail event, we walk the roof looking for bruising, cracked shakes, granule loss on any asphalt sections, and dented flashing. Hail damage that doesn’t look serious from the ground can be a full tear-off from the attic side. We don’t guess at that. We get on the decking and look.
Post-Storm Damage Assessment
If you suspect hail or wind damage, call us before you call your insurance carrier. We’ll document everything in writing with photos, and we’ll walk the roof with your adjuster if you want us there. The written report is yours to keep regardless of whether you hire us for the repair.
Repair vs. Replacement Scope
Small, isolated hail damage on a newer roof can sometimes be repaired with spot replacement. On an older roof with end-of-life underlayment, a repair is throwing money at a problem that’s going to come back. We’ll tell you straight what makes sense, and we’ll put both numbers on paper so you can decide with real information.
Trusted Brands We Service in Simi Valley
We install and service roofing systems from GAF, Atlas, and Tamko, among others. For Simi Valley homeowners, GAF’s Timberline line and Atlas’ StormMaster shake products are the most common choices when a reroof is in the picture, especially on acreage where a Class A fire-rated assembly is mandatory. We keep a working stock of common flashing, underlayment, and ridge components so a repair follow-up in Simi Valley doesn’t have to wait on a week-long material order. If your roof needs a specific product match for warranty continuity, we’ll source it and give you the lead time before you commit to anything.
Common Roof Inspection Problems We See in Simi Valley Homes
- Wind-uplift damage at ridge caps and corners. Santa Ana winds through the Santa Susana Pass hit the north and east slopes hardest. We regularly find entire ridge cap segments and shake courses missing after a wind event in Wood Ranch and the hillside tracts off Erringer.
- Deteriorated underlayment on spaced sheathing. Original 1960s and 1970s sheathing gaps mean underlayment takes the full brunt of Simi Valley’s summer heat. By the time we’re called out, the underlayment is often brittle and cracked well before the roof surface shows visible failure.
- Detached structures skipped entirely. On acreage parcels, the shop, barn, or ADU gets missed by inspectors who only walk the house. Those outbuildings are separate squares, separate access paths, and often separate permit requirements under county rules.
- Grading and drainage issues near wells and septic fields. An inspection that doesn’t check where roof runoff and swales send water is incomplete. Water draining toward a well head or saturating a leach field adds real cost to the job, and it needs to be on the quote before work starts.
Pricing for Roof Inspection in Simi Valley, CA
A standard roof inspection in Simi Valley runs $250 – $550 for a single-family home. The price depends on roof complexity, slope, and the number of structures on the property. Acreage parcels with a detached shop, barn, or ADU typically run $600 – $1,100 because we walk and scope each building as its own line item. If an inspection leads to a repair or reroof with us, the inspection fee is credited toward the job. Every quote is written, itemized, and fixed before work begins. Call (361) 320-9467 for a free estimate, and we’ll put the numbers on paper for you.
Building on acreage in Simi Valley is not the same as building in a city tract. County rather than city permitting applies on many larger parcels, especially north of the 118 and up Tapo Canyon. Septic and well setbacks can dictate where material gets staged, where equipment can access the roof, and where runoff has to be directed. Long material hauls to ranch properties matter, and an open lot means grading and drainage have to be scoped before we quote. We walk the property first, check access, check setback lines, and check where the water goes. That keeps your quote accurate and keeps the building inspector off your back.
We Also Serve Cities Near Simi Valley
Our technicians run inspections and repairs across the entire corridor, from Roof Inspection in Simi Valley to Moorpark, Oak Park, Thousand Oaks, and Westlake Village. If you’re in one of those cities and need an inspection on an acreage parcel or a tract home that’s seen better days, call (361) 320-9467 and we’ll get you scheduled. The same Garrison Standard applies no matter which side of the 118 you’re on.
Serving Simi Valley, CA - Our Local Coverage Area
We’re based in the Simi Valley 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 Roof Inspection in Simi Valley
Simi Valley has thousands of original 1960s and 1970s tract homes with wood-shake roofs on spaced sheathing, plus a significant number of acreage parcels with detached shops, barns, and ADUs that fall under Ventura County rules. That means inspections here take longer, cover more structures, and often require scoping a Class A fire-rated assembly. A standard inspection runs $250 – $550; acreage parcels run $600 – $1,100. Call (361) 320-9467 for an exact quote on your property.
Every structure with a roof gets walked and scoped separately: the main house, detached garage, shop, barn, and any ADU. Each one gets its own line item, its own decking and underlayment assessment, and its own permit-path check. On a five-acre spread off Tapo Canyon Road, we walked the 1972 ranch house, the detached shop, and the barn as three separate inspections, then quoted them as three separate square counts.
Yes. Where roof runoff and swales direct water matters a lot. If a swale drains toward a well head or saturates a septic leach field, the reroof scope has to include grading and drainage corrections. We check that before we quote, not after. It changes the real cost of the job, and you should know it up front. Call (361) 320-9467 and we’ll walk the property with you.
Your inspection should tell you whether your current roof assembly meets the city’s Class A fire-rating requirement. Most original wood-shake roofs don’t. We’ll show you what a Class A retrofit costs, whether a fire-rated shake product makes sense or whether switching to tile or composite is the better money. You’ll get both numbers in writing before you decide anything.
We look for missing ridge caps, lifted shake courses, exposed underlayment, damaged drip edge, and any sign that wind got under the roof surface at the corners. In Wood Ranch and the hillside tracts, it’s common to find entire shake courses scattered across lawns. We also check detached structures, because the same wind that peeled your house roof also hit your shop. Call (361) 320-9467 and we’ll come out.
Schedule Your Simi Valley Roof Inspection
If you want a roof inspection in Simi Valley that actually walks every structure, checks the grading and drainage, and puts real numbers on paper before any work starts, call (361) 320-9467. The estimate is free, the price is fixed, and the person on the other end of the phone is a live human being. Travis Oakley and the Brennan Roofing team serve Simi Valley, Moorpark, Oak Park, Thousand Oaks, and Westlake Village with the same Garrison Standard on every job. Written price. Background-checked crew. One-year guarantee. That’s it.
Written by Travis Oakley, Owner at Brennan Roofing, serving Simi Valley and the surrounding corridor with written-price roofing inspection, repair, and replacement.






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