Allen Park, Michigan
Looking for an Allen Park home inspector? We do certified home, commercial, mold and radon inspections in Allen Park, seven days a week. Home inspection reports come back in 24 hours.
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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 Allen Park 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
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Offices, retail, multifamily and warehouses in Allen Park and across Wayne 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
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Add either to an Allen Park 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 reportPDF, opens in a new tabAllen Park housing stock
Allen Park has roughly 12,434 housing units and about 92% 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 1950s — 6,688 homes, around 54% of the town. At 92% single-family it is almost entirely detached houses, so the inspection is nearly always of a whole building rather than one unit inside one.
The median owner-occupied home here is valued at $165,600. 86% are owner-occupied, which is high even for this area.
None of this is a prediction about a particular house. It is where an Allen Park 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 Allen Park was built
90% of homes here run on utility gas, and 10 still heat with oil. If yours is one of them, the tank is the thing to ask about — where it is, and whether it was ever buried. Another 79 use bottled or LP gas.
Local knowledge
Allen Park’s housing tells a remarkably concentrated story. The median home here was built around 1955, and about 54% of the city’s housing dates to the 1950s. Allen Park’s own Master Plan, adopted in March 2017, reports that most of the city’s housing development occurred before 1960.
That means many Allen Park homes have now been standing for 65, 70 or more years. Age by itself doesn’t make a house defective. What matters is what happened during all those years.
A mid-century Allen Park home may hold an original component in one part of the house, a replacement installed decades later somewhere else, and a much more recent renovation in another. Electrical, plumbing, heating and cooling, roofing, windows, insulation, drainage and interior improvements may each represent a different generation of the home’s history.
So we don’t inspect a 1955 Allen Park house based on assumptions about 1955. We inspect the house that exists today — identifying the systems and materials actually present, evaluating their visible condition, and documenting what deserves your attention.

Before you buy
Local infrastructure
Allen Park’s Master Plan says more about how water moves through the city than most municipal documents do, and it is genuinely useful to a buyer.
The plan states that the sanitary sewer and stormwater systems are separated, but that footing drains and downspouts are connected to the sanitary system in many areas, and that the City had undertaken a program to require disconnection of downspouts and footing-drain removal during renovations. It also records that most city streets have curb-and-gutter drainage served by underground storm sewers, discharging into the Sexton & Kilfoil Drain, the Reeck Drain and Ecorse Creek.
The same plan documents that occasional excess wet-weather flows had resulted in backups and basement flooding in some sections of the city — and, just as importantly, that the City had improved its sanitary sewer system and reduced infiltration and inflow. It credits the then-new Tummel Pump Station at Baker College, near I-94, with roughly 1.34 million gallons of holding capacity and with minimizing basement flooding and sanitary sewer overflows “to almost none” in the portion of the system draining to the Northwest Interceptor.
All of that describes the city as documented in 2017, and it says nothing about whether any individual house has ever had water in it. What it does explain is why basement conditions, exterior drainage, sump equipment where present and the property’s own sewer line are worth a buyer’s attention here.
During an inspection we evaluate accessible conditions — grading, gutters and downspouts, foundation areas, basement or crawlspace conditions, sump equipment where present, and other visible components. We do not trace the underground footing-drain configuration, and we don’t assume every Allen Park house was built or later modified the same way.

Sewer scope
Most of Allen Park’s residential development happened before 1960. A standard home inspection evaluates the visible plumbing inside the house, but it cannot show the condition inside an underground sewer line.
Allen Park treats that line as real infrastructure. According to the City’s 2017 Master Plan, water and sewer service is provided by the Great Lakes Water Authority while the City itself is responsible for maintenance, and its Department of Public Services handles sanitary sewer cleaning and closed circuit television inspections, sanitary sewer repairs, storm sewer cleaning and repairs, house lead sewer televising, catch basin repairs and cleaning, and watermain break repairs.
That is municipal work on the public system, and it is separate from what we do. For a buyer, scoping the line gives a direct look inside accessible portions of the property’s own main sewer line. Rather than guessing from the home’s age, we document what is actually visible in it — root intrusion, displacement, damage, bellies or blockages, where present.

Development history
Not every older Allen Park house comes from the same chapter of the city’s development.
The Master Plan names Estate Allen Park and Mercedes Park among the city’s oldest subdivisions, platted before Allen Park’s inception as a village in 1927. It notes that some of those older homes were later removed to make room for the central business district in the Roosevelt, Allen and Southfield Roads area.
Allen Park was incorporated as a city in 1957, and the plan gives Duke of Gloucester, Marston Estates and Mahling as examples of neighborhoods platted in the years that followed.
The useful point for a buyer isn’t the names. It is that two houses inside the same small city can differ by decades in original construction, and that decades of later remodeling can create more difference still. The individual property’s history is what the inspection works from.

A built-out city
Allen Park’s Master Plan describes it as a built-out city of well-established neighborhoods with single-family residential as the predominant land use. That is a different inspection market from a fast-expanding outer suburb where houses are still going up on open land.
Here the story is almost always the existing house. How has it aged? What has been replaced and what is still original? What has been remodeled, and how well was it integrated? How is water being managed around it? What does the sewer line look like inside? Those questions are worth more to an Allen Park buyer than general advice about inspecting a house.
Allen Park isn’t exclusively residential, either. The plan records substantial commercial and industrial land — together about a fifth of the city in its land-use inventory — along I-94, I-75 and the Southfield corridor and in the northwest and northeast portions of the city. Trademark Inspection Services inspects commercial property too: offices, retail buildings, multifamily properties, warehouses and other commercial buildings in Allen Park and across Wayne County.

Local information from City of Allen Park Master Plan, adopted March 2017 · City of Allen Park. Municipal requirements change — verify current details with the municipality.
Radon in Wayne County
Zone 3 is the lowest of the three EPA categories — the predicted average indoor level across the county is below 2 pCi/L. So Allen Park is not where Michigan’s alarming radon numbers are, and we are not going to pretend otherwise. What a zone cannot tell you is anything about one house: 17% of tests actually run in Wayne County still came back at or above the EPA’s 4 pCi/L action level, which is about one in six. 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 · Wayne 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 Allen Park 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
Ora from Trademark did an incredible job with the inspection and sewer scope of the home I am in the process of buying. He was very thorough, explained everything to me from the start, and made it all super easy to understand which definitely helped to put me at ease a bit more. Highly recommend this company!
Jim was prompt and thorough during the mold testing. Clearly gave us an explanation about mold and testing process he was going to conduct. Testing was followed by a written report. I would recommend everyone use a third party to test mold, independent from the company conducting remediation work. I would hire Trademark again and strongly recommend them.
Cowboy “Jim” just did Mold Testing in my parents’ basement. He was Professional, explained the what, how and yet of everything to my Senior parents. Our results came back super quick. He even referred us to the resources on the Trademark website for me to use to fix the leaky basement. It’s 1 stop shopping with Trademark.
What happens
Questions
Allen Park’s 2017 Master Plan reports that most of the city’s residential development occurred before 1960, and the median home here dates to around 1955. That doesn’t mean an older house is defective. It means the property has had decades for roofing, heating and cooling, plumbing, electrical components, windows, insulation, drainage and interior finishes to be repaired, replaced or modified at different times. The inspection identifies what is actually present today and evaluates its visible condition, rather than assuming everything is as old as the house.
It is worth considering, particularly because most of Allen Park’s residential development happened before 1960. A standard home inspection cannot show the condition inside an underground sewer line. A sewer camera inspection lets us view accessible portions from inside and document visible conditions such as roots, damage, displacement, bellies and blockages where present. The age of the house cannot tell us the pipe material or its condition, which is exactly why looking inside is useful.
Allen Park’s 2017 Master Plan states that although the City’s storm and sanitary systems are separate, footing drains and downspouts are connected to the sanitary system in many areas, and that the City had undertaken a program requiring downspout disconnection and footing-drain removal during renovations. That does not establish the configuration at any individual house. During an inspection we evaluate the visible drainage components and document what can be determined at that property, without assuming every Allen Park home was built or modified the same way.
Allen Park’s 2017 Master Plan documents that occasional excess wet-weather flows had resulted in backups and basement flooding in some sections of the city. The same document describes improvements the City made to reduce infiltration and inflow, and credits the then-new Tummel Pump Station at Baker College with minimizing basement flooding and sanitary sewer overflows to almost none in the portion of the system draining to the Northwest Interceptor. That is municipal history as recorded in 2017 — it does not mean a particular house has flooded or will. Buyers should evaluate the actual property: visible basement conditions, grading and drainage, sump equipment where present, and the sewer line if a camera inspection is done.
No. The 1950s are the largest single portion of Allen Park’s housing stock, at roughly 54%, but the city’s residential history spans several periods. The Master Plan names Estate Allen Park and Mercedes Park among the oldest subdivisions, platted before Allen Park became a village in 1927, and gives Duke of Gloucester, Marston Estates and Mahling as examples of neighborhoods platted after the city incorporated in 1957. The individual property’s construction year is far more useful than assuming every Allen Park house belongs to one era.
Allen Park’s municipal planning documents contain unusually detailed information about the city’s sanitary and stormwater infrastructure, including footing-drain and downspout connections and past wet-weather flow issues in parts of the system. We don’t predict municipal sewer performance during an inspection. We evaluate the property: accessible grading, gutters and downspouts, foundation conditions, basement or crawlspace areas, sump equipment where present, and visible evidence that helps a buyer understand how water is being managed around that house.
Yes. You can book an Allen Park home inspector with us seven days a week, and we cover the rest of Wayne County too.
A home inspection report reaches you within 24 hours. Commercial buildings are 24 to 72 hours depending on size, a radon result comes at the end of the 48-hour test, and mold samples come back from the lab in one to three business days.
More on cost, timing and what is included on the FAQ page.

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Permits, assessing and property records for Allen Park are handled by Allen Park, Michigan, not by us.
From the blog
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