Holly, Michigan
Looking for a Holly home inspector? We do certified home, commercial, mold and radon inspections in Holly, seven days a week. Home inspection reports come back in 24 hours.
Schedule your inspectionCall 734-331-3269
Services
For buyers, sellers, and homeowners keeping an eye on the place they already own. On new construction we also do pre-drywall inspections and 11-month builder’s warranty inspections. Our certified inspectors walk every major system in your Holly home and tell you plainly what they found — then put it in a photo-rich digital report within 24 hours.
Following the InterNACHI Standards of Practice:
Included free with every home buyer inspection— and none of them require us to sell your information.
SatisfactionIf you are unhappy with your inspector on the day of the inspection, before you have seen your report, tell us and we will make it right — or you owe us nothing.
30-Day WarrantyA free 30-day Guard home warranty trial, negotiated for you with no obligation. Activate it whenever you are ready.
$100 OffThe buyer’s protection guarantee: if the first home we inspect for you does not make it to the closing table, for any reason, we take $100 off any further home buyer inspection within 30 days of the original.
Optional services at an additional cost — not part of a standard inspection. Tap one to see what it covers.
A camera down the main sewer line, watching its condition from the inside — roots, breaks, bellies and blockages no visual inspection can find. More about sewer scope inspections
The wood-destroying organism report VA buyers are typically asked to provide, on the federal NPMA-33 form. Carried out during the same visit. More about Veterans WDO inspections
Up to five air samples sent to an accredited laboratory, added to the same appointment rather than booked as a second visit. More about mold inspection and testing
View a sample report
Offices, retail, multifamily and warehouses in Holly and across Oakland County. Know what condition a building is in before you sign — or stay ahead of problems in the one you already own. Reports in 24 to 72 hours depending on size.
Following the CCPIA commercial standards:
Commonly added to a commercial inspection at additional cost.
Commercial laterals are longer, older and carry more. A camera is the only way to see the condition of the one you are buying. More about sewer scope inspections
Air samples to an accredited laboratory, which matters most in buildings that have sat empty or had a roof or plumbing leak. More about mold inspection and testing
View a sample report
Add either to a Holly home or commercial inspection, or book it on its own. We test and we never remediate, so there is nothing to sell you on the back of a result — the number you get is just the number.
Radon measured in house on a professional continuous monitor; mold samples to an accredited laboratory:
The other things worth testing while somebody is already there.
Carried out after remediation on the treated area and the areas next to it, to confirm what was found. More about mold inspection and testing
A damp basement can have several causes, and the buried sewer line is the one a visual inspection cannot check. A scope rules it in or out. More about sewer scope inspections
View a sample reportHolly housing stock
Holly has roughly 2,820 housing units and about 54% of them are single-family detached. Housing that went up mostly in one era has mostly one era’s problems — which is genuinely useful to know before you buy, because it tells you what to look at first.
Most of it went up in the 1990s — 703 homes, around 25% of the town. It is also less detached-house territory than most of the area at 54%, so condominiums, duplexes and small multi-family buildings are a bigger share of what we inspect here — and those bring their own questions about what is yours to maintain and what belongs to the association.
The median owner-occupied home here is valued at $159,000. There are around 304 manufactured and mobile homes in Holly. Those are a different inspection — the questions are about the frame, the anchoring and the skirting rather than a basement.
None of this is a prediction about a particular house. It is where a Holly home inspector starts looking in a home of this age, and what we photograph and write up either way.
Housing figures: US Census Bureau, American Community Survey 2022 five-year estimates.
When Holly was built
76% of homes here run on utility gas. Another 41 use bottled or LP gas.
Local knowledge
The Village of Holly runs a mercury pollutant minimization program, and it will swap a mercury-bearing thermometer for a digital one, free, for any resident who brings one in. It also offers to help residents and businesses safely dispose of mercury or other toxic material.
That is not a curiosity. It is directly relevant to the housing here, because 543 of the village’s roughly 2,820 units predate 1940 and another 283 date from the 1950s. Old houses contain old controls, and the Village’s own list of major mercury uses includes thermometers, tilt switches, lamps, batteries and barometers.
A mercury tilt switch is what sits inside a classic round wall thermostat and inside some older appliance and safety controls. If you buy a prewar house in this village there is a fair chance one is still on a wall or in a basement.
The second thing worth knowing is a limit the Village states plainly about its own code enforcement: the code officer has to be able to see a violation from the public street or driveway, and needs consent to enter private property otherwise. So a tidy street tells you nothing about what is behind a house.
The village also has an unusual amount of its own infrastructure for its size — four wells, three water towers, booster stations, its own wastewater plant, and a dam its public works department checks daily.
Before you buy
Mercury
The Village’s mercury disposal page exists because mercury that goes down a drain or into the trash does not go away. Its stated aim is to keep total mercury in the treatment plant’s effluent at or below 1.3 nanograms per liter — parts per trillion — and it explains why the quantities are small enough to matter: a single thermometer holds roughly half a gram to a gram and a half, and the Village states that one gram is enough to trigger a fish consumption advisory on a twenty-acre lake.
For a homeowner the practical question is what in a house might contain it. The Village lists thermometers, tilt switches, lamps, batteries, pigments and barometers among the major uses, and notes that mechanical switches, dry reed switches and optical sensors are the modern replacements for a mercury tilt switch.
In an older house the usual candidates are a round wall thermostat, an older appliance or safety control, a float or tilt switch in a basement, a fever thermometer left in a cabinet, and occasionally a barometer or a piece of laboratory glass in a workshop.
On an inspection we report what we can see and identify. We do not test for mercury, sample for it, handle it or remove it — that is not within the scope of a home inspection and we would not pretend otherwise. What we will do is tell you plainly when a control looks like an older mercury type, so you can deal with it deliberately.
And the right way to deal with it here is easy: the Village asks residents to call rather than bin it, offers a free digital thermometer in exchange for a mercury one, and says it will help with other toxic material too. That is a better answer than anything a report can offer on its own.
Code enforcement
Holly’s code violation reporting page is unusually candid about the boundaries of its own authority.
Complaints can cover blight, suspected building or zoning violations, damage to an environmentally protected area or any other code concern. But the Village states that for the code officer to address a complaint they must be able to view the violation from the public street or driveway, and that where it is only visible from private property, consent to enter is required.
Read that as a buyer and it settles something useful. Enforcement here is both complaint-driven and sightline-limited. A property with no enforcement history is not a property that has been examined; it is a property nobody has complained about and nobody could see into.
That is precisely the gap an inspection fills. The back of the house, the rear roof slope, the condition of a deck or a detached garage, what has been built or altered out of sight of the street — those are the things a walk around the whole property with permission reveals, and they are commonly where the findings are.
A buyer’s inspection covers the roof, structure, foundation, drainage, electrical, heating and cooling, plumbing and the accessible interior, and reports what is actually there rather than what is visible from the road.
Water
For a village of this size, Holly runs a great deal of its own infrastructure. Its Department of Public Works maintains four wells, three water towers holding a combined 875,000 gallons, several pressure booster stations and numerous lift stations and catch basins, along with more than twenty miles of streets including alleys and dirt roads.
The department also handles water quality itself, conducting weekly, monthly and annual sampling for lead, copper, arsenic and the other parameters the state requires. That is the normal obligation of a system drawing its own groundwater, and the annual report is published on the Village website each year.
Booster stations are worth a note for homeowners. Where a system needs them, pressure varies across the network by design. On an inspection we run fixtures and report on functional flow and drainage — whether the supply keeps up when more than one thing is running, and how the drains behave under that load — and unusual pressure is something we describe rather than diagnose.
The department also performs daily checks and maintenance on the Millpond Dam. A village that inspects its own dam every day is a village that takes water seriously, and the wastewater plant has the awards to match, including federal recognition for operation and maintenance and for its industrial pretreatment program.
We do not test water. Water testing goes through a certified laboratory, and questions about the supply itself go to the Village. What we report is the visible supply piping inside the building where accessible, the materials we can actually see, and any point where the material changes or a repair has been made.
Prewar housing
With 543 units predating 1940, a large share of what you will look at here has been rewired, re-plumbed, re-roofed and reheated by different people at different times. Reading that history is most of the inspection.
Electrical shows it first. The original service was sized for lighting and very little else. Most houses have had a service upgrade, but upgrades range from a genuine rewire to a new panel with original distribution behind it, and circuits added in stages by different hands are common. Mixed generations of wiring in one box, junctions in inaccessible places, and old controls still in service — including the mercury ones — all belong to this story.
Plumbing follows the same pattern: supply lines replaced in part rather than in whole, leaving material transitions worth examining, and drain and vent layouts that are frequently original with newer fixtures attached to them.
Then there is water and the foundation. Eighty-five years of freeze and thaw, settlement and downspouts pointing wherever they ended up leave a readable record in a basement. Staining, efflorescence, previous patching, replaced flooring and how the space is used all say something.
The other 46% of the village — attached housing, apartments and divided property — brings its own questions, particularly about where the boundary of ownership falls. On a condominium the association documents decide that, and on a small multi-unit building bought as an investment, a commercial inspection to the CCPIA standard is usually the right scope.
The buried line
The sanitary line from the building to the main belongs to the owner. On one of Holly’s prewar houses that pipe may have been in the ground for the better part of a century, under a village lot with mature planting over it.
We will not name a material from a build year, because no authoritative source establishes what Holly laterals are generally made of, and a guess in a report is worse than no statement at all.
What a camera settles is the thing nothing else reaches: roots, cracks, displaced joints, bellies or blockages where they exist, and a clear run where they do not. On housing this old it is among the most useful things you can buy before closing, and it answers a question that otherwise only announces itself after you own the house.
A sewer camera inspection is added to the same appointment rather than booked separately. Alongside it we offer radon testing and mold inspection and testing, both of which can be added to a residential or commercial visit.
You can read what our clients say, look through answers to common questions, or get in touch about a specific address in Holly.
Local information from Village of Holly — mercury pollutant minimization program and thermometer exchange · Village of Holly — Department of Public Works, water system and Millpond Dam · Village of Holly — reporting a code violation and the limits of enforcement. Municipal requirements change — verify current details with the municipality.
Radon in Oakland County
Zone 2 is the middle EPA category — the predicted average indoor level across the county sits between 2 and 4 pCi/L. What a zone cannot tell you is anything about one house: 29% of tests actually run in Oakland County still came back at or above the EPA’s 4 pCi/L action level. A zone is a prediction of an average, and nobody lives in an average.
We place a continuous monitor for 48 hours and read the result on site — no mail-in kit, no lab wait. How radon testing works · Oakland County radon and inspection coverage
Zone from the EPA Map of Radon Zones. Elevated-result share from the Michigan Indoor Radon Program.
Why choose us
Five reasons people here pick us as their Holly home inspector.
Family owned since 2009, more than 16,000 inspections completed and over 2,000 five-star reviews across Michigan. We also handle home buyer inspections, commercial building inspections, mold testing and radon testing.
We do not sell mold remediation or radon mitigation, so there is nothing to gain from a result that comes back bad. The number you get is just the number.
Radon, mold, sewer scope and wood-destroying organism inspections go on the same appointment as the home inspection rather than costing you a second morning.
Most people do, and it is the most useful hour of the whole purchase. Ask anything while we are standing in front of it.
InterNACHI and CCPIA certified, with four Certified Master Inspectors and National Home Inspector Examination passes on the team — none of which Michigan requires. The standards we inspect to are published and you can hold the work against them.
Including weekends, because inspection windows sit on closing dates and closing dates do not care what day it is.
Reviews
I recently hired Trademark for a full home inspection on a new purchase, including sewer scope and radon testing. It was a phenomenal experience from beginning to end. Our inspector, Mitch, did a fantastic job explaining all the findings, and the digital report with photos and videos was superb. Would definitely recommend without hesitation.
Salina HamiltonOak Park, MIWe had Mitch inspect our prospective house and he was amazing. He was thorough, patient to answer my questions and provide feedback on what areas he would recommend having a follow up expert and why. The office was responsive and I was able to book multiple services to be done in the same visit (inspection, radon test, sewer scope).
Chris PlaweckiOak Park, MIExcellent sums up the entire experience, from the initial call to set up the appointment with staff that was informative and helpful, up until the actual inspection that was very professional and thorough with any and all questions I had answered. I would highly recommend Trademark to anyone who needs inspection services. Thanks again Curt, my inspector, for an excellent job.
Johnny Thomas JrSouthfield, MIWhat happens
Questions
Because mercury entering the drain reaches the wastewater plant, and the Village aims to keep total mercury in the plant’s effluent at or below 1.3 nanograms per liter. It notes that a single thermometer holds roughly half a gram to a gram and a half, and that one gram is enough to trigger a fish consumption advisory on a twenty-acre lake.
The Village lists thermometers, tilt switches, lamps, batteries, pigments and barometers among the major uses. In a house the usual candidates are a round wall thermostat, an older appliance or safety control, a tilt or float switch in a basement, and a fever thermometer left in a cabinet.
Call the Village rather than putting it in the trash or down a drain. It offers to help residents and businesses dispose of mercury or other toxic material safely, and will exchange a mercury-bearing thermometer for a new digital one free of charge.
No. We report what we can see and identify, and we will tell you plainly when a control looks like an older mercury type. We do not test for, sample, handle or remove mercury — that is outside the scope of a home inspection, and the Village’s own program is the right route.
Not necessarily. The Village states that its code officer must be able to view a violation from the public street or driveway, and needs consent to enter private property otherwise. Enforcement is complaint-driven and sightline-limited, so a clean record means nobody complained and nobody could see — not that the property was examined.
The Village supplies its own. Its public works department maintains four wells, three water towers holding a combined 875,000 gallons and several pressure booster stations, and conducts weekly, monthly and annual sampling for lead, copper, arsenic and the other parameters the state requires. The annual water quality report is published on the Village website.
Mixed, with a substantial prewar core. About 543 of roughly 2,820 units predate 1940, with 703 from the 1990s and 405 from the 1980s. Only about 54% is single-family detached, so attached and multi-unit property comes up regularly too.
On a prewar house, very much so. The lateral belongs to the owner, it may have been in the ground close to a century, and mature village planting has had the same time to find it. A camera inspection documents roots, cracks, displaced joints, bellies or blockages where they exist, and is added to the same visit rather than booked separately.
More on cost, timing and what is included on the FAQ page.
Police, fire, rescue, military and educators — our way of saying thank you for your service. Enter code HERO at checkout.
Claim the Hero DiscountNeed a Holly home inspector and not sure we reach you? Call 734-331-3269 and we will tell you.
From the blog
February 24, 2026
February 18, 2025
October 22, 2017
Your local Holly home inspector, seven days a week. Home inspection reports in 24 hours.
