Who Does Home Inspections: Inspector Types and Pricing
Home inspections in the U.S. are performed by several distinct professional categories: generalist home inspectors, specialty inspectors (radon, mold, septic, pool), structural engineers, and a small number of licensed general contractors operating in an inspection capacity. Each category has different credentials, different scope authority, and different pricing. This guide explains who performs which inspections, what each professional category charges, and how to match the inspector to the property and transaction.
The generalist home inspector
The generalist home inspector is the default professional who performs the standard pre-purchase home inspection. They evaluate the home’s major systems — foundation, structure, roof, HVAC, electrical, plumbing, interior and exterior — and produce a written report. Generalist inspectors hold credentials from ASHI (American Society of Home Inspectors), InterNACHI (International Association of Certified Home Inspectors), or state licensing boards in regulated states. The base inspection fee runs $400 to $500 in most U.S. markets in 2026. The generalist’s strength is breadth — they catch issues across systems and refer specific concerns to specialists when warranted.
Solo practitioners versus inspection firms
The home-inspection industry includes both solo practitioners and larger inspection firms employing multiple inspectors. Solo practitioners typically operate with lower overhead, more personal client relationships, and direct accountability. Inspection firms employ multiple inspectors under shared branding, marketing, and scheduling systems — buyers may not know which specific inspector will arrive on inspection day until shortly before. Both models can produce quality work, but the dynamics differ. Solo practitioners depend on individual reputation, while firms depend on systemic quality control. Buyers can evaluate either model by reading reviews and reading a sample report from the inspector who will perform the work.
Franchise versus independent inspectors
Several home-inspection franchise brands operate nationally (Win Home Inspection, Pillar to Post, AmeriSpec, HouseMaster). Franchise inspectors operate under brand standards with corporate-provided training, marketing, software, and back-office support. The advantage is consistency and brand recognition. The trade-off is that franchise inspectors pay royalties to the parent company, which can constrain their pricing flexibility, and their independence from corporate standards is limited. Independent inspectors set their own rates and methodology within ASHI or InterNACHI standards. Both models are common, and quality varies more within each model than between them.
State licensing requirements
About 30 U.S. states require home inspectors to hold a state license. Colorado does not require state licensure, though many Colorado inspectors hold state-recognized credentials from ICC, ASHI, or InterNACHI and follow standard practices. Texas, Florida, Illinois, North Carolina, and several other states have full licensing programs with required training hours, examinations, and continuing education. Buyers in licensing states should verify the inspector’s current license. Buyers in non-licensing states (including Colorado) should verify professional certifications and insurance instead.
ASHI Certified Inspectors
The ASHI Certified Inspector (ACI) credential is the senior professional level within the American Society of Home Inspectors. Achieving ACI requires passing the National Home Inspector Examination, completing at least 250 documented inspections, and following the ASHI Standards of Practice. ACI-credentialed inspectors typically charge $50 to $100 above generalist market rates and bring documented experience to the work. ASHI maintains a Find an Inspector directory that lists ACI-credentialed inspectors by service area.
InterNACHI Certified Professional Inspectors
InterNACHI is the largest home-inspection association by membership and offers the Certified Professional Inspector (CPI) credential. CPI requires online training, exam passage, and adherence to InterNACHI’s Standards of Practice and Code of Ethics. The credential is comparable to ASHI’s CPI tier but with different specific requirements. InterNACHI inspectors typically charge market rate to slightly above. The association maintains its own Find an Inspector directory and provides specialty add-on certifications (Infrared Certified, Radon Tester, Mold Inspector) as continuing-education paths.
Specialty inspectors: radon
Radon testing is performed by inspectors who hold specific radon-testing credentials, typically from the National Radon Proficiency Program (NRPP) or the National Radon Safety Board (NRSB). Many generalist inspectors hold radon certifications and offer the test as an add-on for $125 to $200. Standalone radon testing services (without a home inspection) run $150 to $300. Colorado is a high-prevalence state per EPA mapping, and radon testing is almost universal in Front Range home purchases.
Specialty inspectors: mold
Mold inspection is performed by inspectors holding Certified Mold Inspector (CMI), Council-certified Microbial Investigator (CMI), or similar credentials. The CDC and EPA both note that visible mold should be remediated regardless of species, so mold sampling primarily serves cases where symptoms suggest mold but no visible growth is present, or where documentation supports a remediation contract. Mold inspection runs $200 to $500 as an add-on or $300 to $700 standalone. Sampling laboratory fees are typically separate.
Specialty inspectors: septic
Septic system inspections are performed by licensed septic contractors, pump-out services, or specialty inspectors with septic credentials. The inspection includes pumping the tank, evaluating effluent levels, dye-testing the field, and documenting tank condition. Septic inspections cost $300 to $600 depending on tank size and accessibility. Rural Front Range properties with septic systems require this inspection separately from the home inspection. Some generalist inspectors coordinate scheduling with septic specialists; others leave the booking to the buyer.
Specialty inspectors: pool and spa
Pool and spa inspections require specialty knowledge of pool shell construction, equipment, electrical bonding, and safety features. Some generalist inspectors offer pool inspection as an add-on ($100 to $250); others refer to licensed pool contractors. The Association of Pool and Spa Professionals (APSP) and the National Swimming Pool Foundation (NSPF) offer pool inspector credentials. For homes with pools, the small additional cost of a pool inspection is well justified — pool repairs can run $5,000 to $30,000 for major equipment or shell issues.
Structural engineers
Structural engineers (PE-licensed) perform foundation and structural evaluations that home inspectors recommend when significant concerns appear. Engineering reports carry more weight in negotiation and lender review than home inspector findings. Structural engineering inspections cost $400 to $1,000 for residential work. Front Range buyers on properties with expansive clay soils or visible foundation movement should budget for engineering review when the home inspector flags structural concerns. The home inspector’s role is to recognize when engineering review is warranted, not to perform engineering analysis themselves.
Licensed contractors as inspectors
A small number of states permit licensed general contractors to perform home inspections under specific scope limitations. The arrangement creates a potential conflict of interest — a contractor inspector might identify repair work and then bid on it. Reputable contractor-inspectors disclose this dynamic and recuse themselves from bidding on findings they identified. Buyers should be cautious about using a contractor as their pre-purchase inspector unless the contractor explicitly operates under inspection-only terms with no construction relationship to the buyer.
Commercial and multifamily inspectors
Commercial property inspections require different credentials and scope than residential work. The Certified Commercial Property Inspector (CCPI) credential and the Commercial Real Estate Inspection Association (CCPIA) provide framework for commercial work. Commercial inspectors charge $800 to $5,000+ depending on property size and complexity. Multifamily property inspections (3+ units) sometimes fall under residential standards and sometimes under commercial standards depending on the inspector and the buyer’s needs.
New construction phased inspectors
New construction inspections often involve multiple visits at key construction phases: pre-pour foundation, pre-drywall framing, and final pre-closing walkthrough. Some inspectors specialize in new construction work and offer packages combining these visits ($900 to $1,500 across all three). The phased approach catches errors that become invisible once finish materials are installed — improperly installed insulation, missed framing details, electrical or plumbing problems hidden behind drywall. HUD references third-party new-construction inspection as a recommended buyer practice.
Pre-listing inspectors
Some inspectors specialize in pre-listing inspections commissioned by sellers before going to market. The seller commissions the inspection to identify issues that can be repaired or disclosed before listing. Pre-listing inspectors are typically the same generalists who perform buyer inspections, but the deliverable goes to the seller. Sellers can use the findings to make repairs, adjust pricing, or transparently disclose conditions to attract serious buyers. The cost matches buyer-side inspection at $400 to $500. The hiring a home inspector guide covers the distinction between seller-side and buyer-side inspector relationships.
Insurance inspectors
Insurance inspectors perform inspections for insurers underwriting homeowner policies. These inspections focus on insurability factors — roof condition, electrical safety, plumbing condition, presence of specific hazards. They do not produce buyer-protection deliverables and are not substitutes for a pre-purchase home inspection. Some insurance inspectors are home-inspector-credentialed, but the scope and deliverable differ fundamentally. Buyers should not rely on insurer-arranged inspections for their own due diligence.
How to choose among inspector types
For a standard pre-purchase inspection on a typical residential property: a generalist home inspector with ASHI or InterNACHI certification. For older homes (pre-1980): add lead and asbestos sampling from a specialty inspector. For homes with pools or septic systems: add specialty inspectors for those systems. For properties with visible foundation concerns: add a structural engineer. For commercial properties: a CCPI-credentialed commercial inspector. For new construction: a generalist inspector who offers phased inspection packages.
Inspector specialization by property type
Some inspectors develop deep specialization in particular property types. Historic-home specialists understand pre-1900 construction techniques, original system inventories, and the specific failure modes of older buildings. Luxury-home specialists work with high-end finishes, complex mechanical systems, and the more demanding documentation expectations of expensive properties. Investment-property specialists evaluate income-producing characteristics, deferred-maintenance backlog, and capital-improvement priorities alongside the standard inspection scope. Buyers purchasing properties outside the inspector’s specialty area may miss findings that a specialist would catch.
Verifying credentials before booking
Buyers should verify inspector credentials before booking. The ASHI Find an Inspector tool, the InterNACHI Find an Inspector tool, and state licensing board lookups (in licensing states) all confirm active credentials. Look for: current ASHI or InterNACHI membership, state license in licensing states, current errors-and-omissions insurance, and clean disciplinary record with any oversight body. The home inspector directory guide walks through the credential-verification process. Buyers who skip verification routinely engage inspectors with lapsed credentials or limited experience.
Liability and professional accountability
Different inspector types operate under different liability frameworks. Generalist home inspectors typically cap their liability at the inspection fee through their contract terms. Structural engineers carry professional engineering liability that is far more substantial — engineering reports can support legal action against the engineer for negligence. Licensed contractors operating as inspectors carry contractor-license liability. Specialty inspectors (mold, septic, pool) carry profession-specific liability. Buyers should understand that the contractual liability cap on a home inspection does not preclude legitimate claims for gross negligence, but it does constrain typical remedies.
Pricing summary by inspector type
To summarize 2026 pricing across inspector categories: generalist home inspector $400 to $500, ASHI Certified Inspector $450 to $600, radon specialty $125 to $200 add-on or $150 to $300 standalone, mold specialty $200 to $500 add-on, septic specialty $300 to $600, pool specialty $100 to $250 add-on, structural engineer $400 to $1,000, commercial inspector $800 to $5,000+, new construction phased package $900 to $1,500, pre-listing inspection $400 to $500. The pricing spread reflects scope and specialty knowledge rather than inspector skill alone.
References
- Choosing a Home Inspector — ASHI
- Find a Certified Inspector — InterNACHI
- For Your Protection: Get a Home Inspection — HUD
- Building Code and Inspector Credentials — ICC