Many people assume that a brand-new home does not need a thorough inspection. After all, everything is fresh. Nothing has had time to wear out. The builder just passed all the required city inspections. What could possibly be wrong? Quite a lot, it turns out. Understanding how new construction inspections differ from resale inspections matters both for inspectors who want to offer this service and for buyers who are wondering whether to bother.
Why New Construction Inspections Are Different
A resale inspection evaluates an existing home’s condition, looking for deterioration, deferred maintenance, age-related failures, and past problems that affect current function. A new construction inspection evaluates whether a home was built correctly. Those are fundamentally different questions.
New homes are built under time pressure by subcontractors who may be rushing to meet schedules on multiple projects simultaneously. Framing crews, plumbers, electricians, HVAC technicians, and insulation contractors all work in overlapping sequences, and each trade can affect the work of the trades that follow. Municipal inspectors check for code compliance at required stages, but they are looking at high-level code adherence, not the kind of thorough evaluation a professional inspector provides.
Defects in new construction tend to be installation errors rather than wear-related failures. Improperly installed flashing, missing vapor barriers, inadequate insulation coverage, wrong pipe slopes, reversed polarity outlets, unsupported framing members, and HVAC duct systems with uncapped connections are all common findings in new construction inspections that municipal inspectors may never catch.
Phase Inspections: The Most Thorough New Construction Approach
The most valuable new construction inspection strategy is phase inspection, where the inspector evaluates the home at specific stages of construction before work is covered up. There are typically three critical phases.
The pre-pour or pre-foundation inspection evaluates the site preparation, formwork, rebar placement, and drainage provisions before the concrete is poured. This is the only opportunity to see these elements before they are permanently buried.
The pre-drywall or framing inspection is often the most important phase. After framing is complete and rough mechanical systems have been installed but before insulation and drywall cover everything, the inspector can see the entire structural skeleton, all rough plumbing and electrical, HVAC ductwork, insulation placement, and sheathing details. Problems found at this stage can be corrected at relatively low cost. The same problems discovered after drywall is installed require tearing into finished surfaces.
The final inspection at substantial completion evaluates the finished home in the same manner as a standard home inspection, checking all systems, surfaces, fixtures, and components. Even with phase inspections completed earlier, a final inspection is worthwhile because subcontractors work in the home between phases and can introduce new issues.
Common Findings in New Construction vs. Resale
In a resale inspection of a 1960s Portland craftsman, you are looking for galvanized supply lines showing corrosion, Federal Pacific or Zinsco electrical panels, degraded crawlspace vapor barriers, wood rot at the exterior trim, aging HVAC systems, and the effects of decades of weather on the roof and envelope. These are wear and age findings.
In a new construction inspection in a Clark County subdivision, you are looking for something entirely different: vent pipes terminated below minimum heights, bathroom exhaust fans dumped into attic spaces rather than exhausted to the exterior, missing blocking at critical structural connections, improper staircase geometry, GFCI outlets wired in the wrong direction, improper flashing at window rough openings, and attic insulation with gaps or compression that reduce its effective R-value significantly. These are craftsmanship and installation findings.
How Inspectors Approach Each Type
A resale inspection requires deep knowledge of how building systems age, what failure modes look like after years of use, and how to identify evidence of past repairs or concealed conditions. Experience with a wide variety of home types and ages is a major asset. An inspector who has walked through hundreds of 1950s homes develops pattern recognition for the problems those homes tend to have.
A new construction inspection requires knowledge of current building codes, proper installation practices for modern systems, and the ability to evaluate work quality rather than just condition. It also requires a different interpersonal dynamic. In resale, you are evaluating a property. In new construction, you are evaluating a builder’s work, often while the builder’s representatives are present. Documenting deficiencies clearly and professionally, without becoming adversarial, is an important skill.
Business Opportunity for Inspectors
New construction inspection is less dependent on the resale transaction cycle. Builder schedules do not follow seasonal real estate patterns as closely. An inspector who develops relationships with general contractors and custom home builders can create a pipeline of phase inspection work that provides income throughout the year, including during the winter slowdown that affects resale volume in the Portland metro market.
Phase inspection packages can be priced at $800 to $1,500 or more for a complete three-phase service, making them among the highest-revenue single-property engagements available to a residential inspector. Final-only new construction inspections typically run $50 to $100 more than comparable resale inspections due to the different scope and documentation requirements.
What Buyers Should Know
Buyers of new construction who skip the inspection because the house is new are making a significant mistake. A builder warranty covers defects that the builder acknowledges, but it does not substitute for independent documentation of conditions at the time of purchase. An independent inspection creates a baseline record that is invaluable if warranty disputes arise later. It also finds conditions the builder’s warranty would cover but that the buyer might not notice or know to claim without a professional evaluation.
For more on the full spectrum of home inspection services, see Home Inspector Specializations That Pay and How to Survive the Winter Slowdown.