Professional Home Inspection in King of Prussia, PA

InterNACHI-certified home inspection serving King of Prussia and all of Montgomery County. Bob personally inspects every major system — structure, roof, electrical, plumbing, HVAC, foundation, and exterior envelope — against ASHI and InterNACHI standards. Full 24-hour photo-documented report. 4.9★, 169 Google reviews.

Schedule Inspection Call 610-348-6728 Text Bob

Inspections typically scheduled within the week. Bob returns every call within 24 hours.

4.9 on Google
★★★★★

"I had a great experience with Bob. I attended the inspection as well and he answered all the questions I had. It seemed to be a very thorough inspection and he got the report back to me pretty quickly in a little under 2 days."

— Nina Sapientia, via Google Reviews
★★★★★

"I highly recommend using All Seasons. Bob was extremely thorough and took the time to answer all my questions. What is also extraordinary is that he answered all my calls right away after the report was issued. You don't find many companies that will do that."

— Sue, via Google Reviews
★★★★★

"We're so glad we went with Bob. He was professional, thorough, easy to talk to, prompt, and genuinely great to work with. He especially made a point of helping us avoid common pitfalls and unnecessary extra remediation costs. Enthusiastically recommending him to anyone looking for a great home inspector."

— Cary Marcous, via Google Reviews
★★★★★

"As a first-time homebuyer, Bob's thoroughness, attention to detail, and willingness to answer any and all questions made me feel extremely comfortable. He took the time to explain all findings and make me a part of the process. I couldn't recommend Bob enough."

— Kyra Quigley, via Google Reviews
★★★★★ Read All Our Google Reviews

King of Prussia, Montgomery County

What does a home inspection in King of Prussia include?

A home inspection in King of Prussia, Montgomery County is a top-to-bottom evaluation of a single property — foundation, structure, roof, electrical, plumbing, HVAC, and exterior envelope — performed in person by Bob against ASHI and InterNACHI standards, with a full photo-documented digital report delivered inside 24 hours.

King of Prussia sits at the crossroads of Route 202, Route 422, and the Pennsylvania Turnpike (I-76) inside Upper Merion Township, and the housing reflects every wave of build-out that followed those roads being punched through Montgomery County. The oldest residential pockets in Gulph Mills and the lanes rolling down toward Valley Forge National Historical Park hold center-hall colonials and stone-faced ranches, a lot of them built between the mid-1960s and early 1980s as the first wave of corporate relocation hit the area. Further north and east, toward Swedeland and the edges close to the KoP Mall and King of Prussia Town Center, you get split-levels and bi-levels on quarter-acre lots, plus the dense townhouse pods that filled in between the office parks along First Avenue and Moore Road. Inspections in this part of Upper Merion generally pull from Upper Merion Area School District catchment, and buyers come in waves — a lot of relocation clients transferring in from corporate HQs near the Village at Valley Forge, and a steady run of investors doing quick-turn flips on the smaller ranches near the mall. The housing stock is not historic the way Gulph Mills' older sections look — it is 1960s through early-80s suburban middle-class construction that has now aged 40 to 60 years and is deep into its first full mechanical replacement cycle.

The era-specific defects Bob sees on a King of Prussia inspection are very consistent with that 1965–1983 build-out window. On builds from roughly 1965 to 1973 — common in Gulph Mills and the older Swedeland lanes — aluminum branch-circuit wiring shows up regularly, and Bob checks every accessible outlet and switch connection for the telltale darkening and loosening at copper devices. Federal Pacific Stab-Lok panels and Zinsco panels are still sitting live in a meaningful share of these homes; both have documented failure-to-trip issues, and Bob flags them for replacement rather than patching. I pulled the panel cover on a 1972 split-level off North Gulph Road last year and found a full FPE Stab-Lok bus with two double-tapped breakers and a burn mark on the neutral — that house was under agreement with a relocation buyer from a corporate transfer, and the finding changed the deal. Polybutylene supply lines (the gray plastic stuff with crimped fittings) turn up in the later end of this era, roughly 1978–1983, especially in townhouse pods, and they fail without warning. Early-1980s homes with EIFS (synthetic stucco) often lack a true drainage plane behind the cladding, so Bob scans those walls hard. Cedar-shake roofs installed as the original covering are mostly at or past life-end, HVAC units from the 1990s replacement cycle are now past 25 years, and asbestos 9-by-9 floor tile on basement slabs is routine below-grade. He calls all of it straight so the buyer knows what is cosmetic, what is safety, and what needs a specialist.

20+
Years of Experience
1960s–2000s
Primary Housing Era
4.9★
Google Rating (159)
2
National Certifications

What does Bob check during a King of Prussia home inspection?

Bob approaches every King of Prussia inspection per ASHI and InterNACHI Standards of Practice. With 1960s–2000s housing stock dominant in King of Prussia, he focuses on the era-specific concerns that affect modern builder-grade construction in Montgomery County.

OSB Sheathing & EIFS Moisture Trapping

Homes from the 1980s–2000s often use oriented strand board (OSB) sheathing that is highly vulnerable to moisture damage — once wet, OSB swells and loses structural integrity permanently. Synthetic stucco (EIFS) installations from this era are particularly problematic, trapping moisture behind the exterior finish and rotting the sheathing underneath.

Builder-Grade Materials Reaching End of Life

The mechanical systems in 1980s–2000s homes — water heaters, furnaces, AC condensers, and electrical panels — are now reaching or past their expected service life. Bob evaluates remaining useful life, identifies builder-grade components that typically fail first, and checks for compressed HVAC ductwork in tight attic and crawlspace installations.

Vinyl Siding Over Damaged Sheathing & Deck Connections

Vinyl siding can mask significant moisture damage to the sheathing underneath — especially at window flanges, kick-out flashing locations, and penetration points. Bob checks for telltale signs of hidden damage and inspects deck ledger connections, which were often improperly flashed during this era of construction.

Polybutylene Remnants, Builder-Grade Windows & HVAC Sizing

Some 1980s–2000s homes still have polybutylene plumbing, builder-grade windows approaching replacement age, and HVAC systems that were undersized for the actual heating and cooling loads. Bob identifies which components are original versus replaced and estimates remaining useful life.

What are common issues in King of Prussia homes?

Based on 20+ years inspecting modern builder-grade homes in Montgomery County, these are the issues Bob finds most often in King of Prussia's 1960s–2000s housing stock:

  • EIFS (synthetic stucco) trapping moisture and rotting structural sheathing
  • OSB sheathing damage from water intrusion at window and door flanges
  • Builder-grade HVAC systems, water heaters, and windows reaching end of life
  • Compressed ductwork in attics reducing airflow and creating condensation
  • Deck ledger boards without proper flashing creating structural risk
  • Polybutylene plumbing remnants in homes built before mid-1990s

Ready to schedule your King of Prussia inspection?

Inspections typically scheduled within the week. Bob returns every call within 24 hours.

Also Available: Mold Testing & Air Quality in King of Prussia

In addition to home inspections, Bob provides professional mold testing and air quality analysis for King of Prussia properties. PRO-LAB certified lab results starting from $290.

Learn About Mold Testing in King of Prussia

Schedule Your Home Inspection in King of Prussia

Same-week appointments available. Bob personally oversees every inspection — you always know who's walking through your home.

610-348-6728

Mon–Sat, 7am–7pm • Urgent pre-closing available

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Inspection Services in King of Prussia

  • Residential Home Inspection
  • Pre-Listing Inspection
  • New Construction Inspection
  • 11-Month Warranty Inspection
  • WDI / Termite Inspection
  • Radon Testing

Pricing for King of Prussia

Home Inspection
Full inspection + 24-hour report
From $325

Every home is different. Call Bob for your specific quote — he'll give you an honest number on the spot.

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"24-hour report. You always get Bob. My name is on every inspection I do."
InterNACHI Certified • 20+ Years Experience • No Conflict of Interest
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Why Choose Bob

Why do King of Prussia homeowners choose All Seasons?

01

You Always Get Bob

When you hire All Seasons, Bob personally oversees your inspection — start to finish. No corporate dispatch, no unknown inspector. You know exactly who's walking through your King of Prussia home.

02

InterNACHI Certified

InterNACHI Certified Professional Inspector with 20+ years of specialized expertise in Montgomery County's 1960s–2000s housing stock.

03

24-Hour Reports

Your detailed, photo-rich inspection report delivered the same day. No waiting — so you can make decisions within your contract timeline.

04

Modern builder-grade Expertise

Bob understands the specific weaknesses of builder-grade construction from the 1980s–2000s — EIFS moisture problems, OSB vulnerability, compressed ductwork, and systems reaching end of life. He knows which builder shortcuts to look for and which components need replacement planning.

From the Blog

What should King of Prussia homebuyers know about inspections?

What Every Buyer Should Know Before Inspecting a Pre-1960 Home in Montgomery County

Read More →

What Should a Home Inspector Actually Check?

Read More →

Get in Touch

How do I schedule a home inspection in King of Prussia?

Same-week appointments available throughout the Philadelphia region.

Serving Philadelphia, Montgomery, Bucks, Chester & Delaware Counties. All major credit cards accepted.

Tell Us About Your Property

Bob returns every call within 24 hours. Inspections typically scheduled within the week. No spam, no email lists.

Common Questions

What are common home inspection questions in King of Prussia?

Questions buyers and sellers in King of Prussia ask us most often — answered directly.

Home inspections in King of Prussia start at $325. Final pricing depends on square footage, property age, number of outbuildings, and whether add-on services (radon, sewer scope, termite, mold air sampling) are bundled. Call Bob directly at 610-348-6728 — he gives honest per-property quotes on the first call, not a menu price list.
Every King of Prussia inspection is run against ASHI and InterNACHI standards and covers foundation and structural systems, electrical panel and accessible wiring, plumbing supply and waste lines, HVAC equipment and distribution, roof and attic, exterior envelope and grading, interior finishes, windows and doors, and insulation and ventilation. You receive a photo-documented digital report within 24 hours.
Most King of Prussia inspections run 2-3 hours on-site depending on square footage and property age. Bob encourages buyers to attend — the in-person walk-through at the end is where the report becomes useful, not just something you read later.
Every home inspection in King of Prussia is performed in person by Bob Klebanoff — the same licensed InterNACHI- and ASHI-certified inspector who shows up to every appointment. No rotating technicians, no subcontractors, no handing the job off once you book. Findings are documented with photographs and a plain-language repair-cost range, sorted into immediate safety concerns versus planned-maintenance items, so you can decide whether to negotiate, accept, or walk. Nothing gets buried in jargon.
Yes. Homes built in King of Prussia between roughly 1965 and 1973 — common in Gulph Mills and the older Swedeland sections — frequently have aluminum branch-circuit wiring. Bob pulls the panel cover, confirms the conductor material, and checks accessible outlet and switch connections for loosening and heat signatures. Aluminum itself is not automatically a dealbreaker, but the terminations at copper devices are where fires start, so Bob documents the extent and recommends COPALUM or AlumiConn remediation by a licensed electrician where it is warranted.
A meaningful share of 1960s and 1970s homes in Upper Merion Township still have live Federal Pacific Stab-Lok or Zinsco panels. Both brands have well-documented failure-to-trip problems — the breaker does not open when it should, which is a fire risk. Bob identifies the panel brand, photographs the interior, and recommends full panel replacement rather than a partial repair. On a King of Prussia inspection last year off North Gulph Road, Bob flagged an FPE bus with double-tapped breakers and visible heat damage, and the buyer used the finding as a credit at closing.
Yes, especially in townhouse pods built roughly 1978 through the mid-1980s near the King of Prussia Mall and the corporate-park corridor. Polybutylene is a gray plastic pipe with crimped metal or plastic fittings, and it fails without warning — Bob has seen whole-ceiling collapses from a single hidden fitting. On every inspection he traces supply lines at the meter, the water heater, and any exposed runs in the basement or utility closet. If poly-b is present, he notes the condition, the fitting type, and recommends a re-pipe plan so the buyer can price it before closing.
Split-levels and bi-levels built in the 1960s and 1970s dominate certain Gulph Mills lanes, and they have predictable weak spots. Bob inspects the below-grade family room and attached garage transition for water intrusion at the grade change, the foundation wall for efflorescence and settlement cracks where additions meet original construction, carpet-over-concrete installations that trap moisture underneath, and undersized original ductwork that cannot handle modern cooling loads. The lower-level slab is often where moisture and air-quality issues hide in these floor plans.
Yes. A large share of Bob's King of Prussia clients are relocation buyers transferring in to corporate HQs near the Village at Valley Forge or the office parks along First Avenue. Bob sends a full digital report with photos and short video clips of any safety or budget-level finding within 24 hours, and he schedules a phone or video walkthrough so you can ask questions about the findings in real time. If you can attend in person, that is ideal — but distance is not an obstacle to getting a complete picture of the property.
The scope is similar but the emphasis shifts. In the townhouse pods near the KoP Mall and along the Route 202 corridor, Bob focuses more on party-wall penetrations, shared-attic fire separation, deck ledger-board flashing, and the HOA-boundary question — where does unit responsibility end and the association pick up. In single-family homes in Gulph Mills or the older Swedeland streets, the emphasis is on envelope, era-specific systems like aluminum wiring and poly-b plumbing, and below-grade moisture. Bob adjusts the report accordingly so the findings match the property type.
Yes. Bob works with a steady run of investor clients doing quick-turn purchases on the smaller ranches and townhomes near the mall and along the Route 422 corridor. He can typically schedule within the week and delivers the digital report within 24 hours of the walkthrough. For investor clients he emphasizes the cost-driving findings — roof age, HVAC age, panel brand, supply-line material, foundation condition — so the numbers for the flip budget are defensible before the contract goes hard.
Yes. A number of homes from the tail end of the KoP build-out cycle, roughly 1980 to 1988, were clad in early EIFS systems that were installed without a proper drainage plane behind the cladding. Bob scans those walls for cracking at penetrations, missing kick-out diverters at roof-wall intersections, sealant failure at windows, and visible staining or efflorescence at the bottom termination. If the signs warrant it, he recommends a moisture-probe inspection by a stucco specialist before closing — concealed rot behind synthetic stucco can run well into five figures to remediate.
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