Quick Check CapEx Engine
Enter the installation year or inspection condition for your major home systems. Receive your 5-year capital replacement forecast instantly.
What's My Next Big Bill?
Enter the age of the Roof, HVAC, and Water Heater. See upcoming capital expenditure windows before making an offer.
Roof Covering System
Guideline lifespan: 18–28 yrs (22y median)
InterNACHI standard inspection comment classifications.
HVAC / Heating & Cooling System
Guideline lifespan: 14–22 yrs (17y median)
InterNACHI standard inspection comment classifications.
Water Heating System
Guideline lifespan: 7–12 yrs (10y median)
InterNACHI standard inspection comment classifications.
Planning Window: 2026–2028
Early-scenario exposure: $0
Window planning range: $13k–$30k
Range: $365–$800/month
Roof Covering System is the earliest modeled replacement window
From the ages and condition entered, roof covering system is the first system to review (2026–2028), with an owner-cost planning range of $12,000–$27,000. These are planning scenarios based on service-life and cost ranges, not a diagnosis, a failure date, or a probability that a particular system will fail.
What to verify next
Compare the entered age with inspection notes, permits, service records, or a contractor's written estimate. For a condo or townhome, confirm which components the association maintains and check any approved assessment documents.
Review Roof Covering System planning detailsKnow what the estimate covers
The 5-year base plan counts modeled replacement exposure within the selected horizon. It does not include every repair, operating cost, market-value factor, or work outside the selected assumptions.
See the assumptions and limitsVerified regional escrow credits, home inspection tools, and contractor warranty programs.
Modeled Capital Replacement Schedule
Capital outlays organized strictly into chronological planning windows.
Which house carries the bigger 5-year cash burden?
A cheaper house can have expensive years ahead. Compare this house against a second property to discover the Condition-Equalized Price Range.
How NextBigBill Models Your 5-Year Capital Forecast
An inspection describes observed condition; this tool combines entered system ages and condition with service-life ranges to estimate planning windows and costs. It does not calculate failure probabilities or predict an exact replacement date.
1. Service-Life Ranges
We use the lifespan references listed in our data registry to set low, typical, and high planning bounds. The selected bound changes the modeled timing; it is not a statistical distribution or a probability that a particular system will fail.
2. 2026 Replacement Cost Baselines
Cost baselines reflect national median contractor bids for full equipment replacement, professional labor, code compliance, old equipment tear-out, and municipal disposal fees. Figures are normalized to current 2026 USD to account for post-pandemic building material inflation.
3. Association & HOA Isolation
For condominiums and townhomes, common elements funded by association reserves are explicitly isolated from direct buyer CapEx to avoid false liability. Documented special assessments are tracked independently under transparent contract closing responsibility rules.