Homeowner precision inspection guide
Know your house the way an inspector does.
Plain-English self-inspection guides for every system in your home — with real code references from NEC, IPC, IRC, ANSI/APSP — and calculators that use the same math your electrician does.
Cited, not fabricated
Every code reference is section-and-year specific. Every numeric spec traces to a real standard.
Self-inspection checklists
Homeowner-scale walk-throughs modeled on how a licensed inspector reads a house.
Real calculators
Voltage drop, paver base loading, fixture flow — the same math the trade uses, in your browser.
Photo · Clay Banks on Unsplash
The map
Everything that keeps a house running.
Three sections are live today. The rest are being written to the same standard — cited, sourced, and tool-supported.
Core systems
Electrical
Service panels, GFCI/AFCI, grounding, load calcs — read a panel the way an inspector does.
Read itPlumbing
Supply, DWV, water heaters, cross-connection, pressure. Where fixtures sit in IPC and IRC.
Read itHVAC
Load calcs (Manual J), refrigerant lines, duct sizing, condensate, filtration.
Appliances & Fixtures
Range hoods, dryer venting, dishwasher air gaps, disposal wiring.
Building envelope
Roofing
Asphalt shingles, underlayment, ice-and-water, ventilation, flashing details.
Attics & Insulation
R-values, air sealing, ventilation ratios (1:150 and 1:300), knee walls.
Basements & Foundations
Bulk water, capillary rise, radon, egress windows, sump systems.
Outdoor & site
Concrete & Slabs
Mix design, control joints, curing, moisture testing, exterior slab tolerances.
Patios & Pavers
Base prep, compaction, slope, edge restraint, joint sand, drainage.
Read itOutdoor & Site
Grading, drainage, downspout discharge, retaining walls, deck ledger flashing.
Wellness spaces
Hot Tubs & Spas
Pad, bonding, electrical (NEC 680), cover R-value, chemistry, safety.
Read itSaunas
Room construction, ventilation, heater sizing, electrical, wood species.