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Building Code Reports

Local Building & Roofing Code Reports

Stop chasing codes. Start estimating with confidence.

Enter a property address to identify the governing jurisdiction and access property-specific building and roofing code requirements, including adopted code versions and cited YES/NO answers, organized in one report.

Building Code Report

10694 E Powers Dr

Englewood, CO 80111

Sample

Authority Having Jurisdiction

Arapahoe County

Sales tax

4.25%

2021 IRC 2021 IECC

Roofing requirements

  • Ice & Water ShieldR905.1.2NO
  • Drip edgeR905.2.8.5YES
  • Valley linerR905.2.8.2YES
  • Class 4 Shingle RequiredLocal Amend.NO
  • Roofing Permit RequiredR105.1YES
  • Roof Size25 SQ
  • Primary Pitch5/12
Color-coded YES/NO. Every answer cited to code in force.

The cost of guessing

Guessing at Code Requirements Puts Every Estimate at Risk

Roofing codes shift by jurisdiction, sometimes one street to the next. Ballpark the wrong code version, miss a required line item, or assume the wrong sales tax rate, and you eat the difference. Failed inspections, lost supplements on your most expensive line items, and bids that come in wrong both ways.

Wrong code version

Missed Code Requirement

Failed inspection

Overestimateand you lose to a competitor.
Underestimateand you cut your own margin.

Property summary

1428 Maple Ave · Pitched · Residential

Authority Having Jurisdiction

City of Aurora · enforces codes

Adopted codes

2021 IRC · 2021 IECC · 2023 NEC

The solution

Every Accurate Estimate Starts With the Right Foundation

Accuracy starts before the first roofing line item. The Building Code Report identifies the property, the governing Authority Having Jurisdiction, the adopted codes, and the local tax information that applies.

With the right foundation established, every YES or NO requirement can be tied back to the applicable code.
01 · Property summary

Property-specific summary

Every report opens with a clear snapshot of the project: roof type and size, primary pitch, classification, and key property characteristics. Each estimate starts from the right foundation and the right potential job size.

Project snapshot

Roof typePitched
ClassificationResidential
Home size2,140 sq ft
Characteristics2-story · attached garage
Roof size25 SQ
Primary pitch5/12
02 · Authority

Authority Having Jurisdiction

The report confirms the exact Authority Having Jurisdiction (AHJ) for the property right at the top, and whether that authority actively enforces building codes. This is where accuracy begins. Without AHJ, nothing else matters.

Each report also includes direct contact details for municipality officials, giving you easy access to up-to-date information when you need to verify.

City of Aurora

Enforced
  • Chief Building OfficialJ. Romero
  • DepartmentBuilding Division
  • Phone(303) 555-0142
03 · Adopted codes

Adopted codes by municipality

Know exactly which codes apply to your project, with a "Date Verified" stamp because local codes change frequently. No more guessing which version is in force. No more outdated assumptions.

Adopted codes

Getting latest data
Residential2021 IRC
Building2021 IBC
Energy2021 IECC
Fuel Gas2021 IFGC
Electrical2023 NEC
Plumbing2021 IPC
Mechanical2021 IMC
04 · Sales tax

Local sales tax

Sales tax rates can swing massively even one street away, depending on which jurisdiction has authority. Understand exactly which taxes apply to the property and where they come from.

OneClick Code breaks the total rate into its applicable state, county, city, and special-district components, so the estimate is based on the property's actual tax jurisdiction, not a flat-rate assumption.

Tax breakdown

Arapahoe County, CO
  • State2.90%
  • County0.25%
  • CityUnincorporated
  • Special district (RTD · SCFD)1.10%
Total rate 4.25%

Not a flat-rate guess. The exact local rate, itemized.

Specific features

Code-backed answers for critical roofing requirements

With the jurisdiction and adopted codes established, the report answers each critical roofing requirement with a clear YES or NO, every one cited to the code that drives it. No missed code requirements. No assumptions on the items that cost the most to get wrong.

2021 IRC requirements

YES / NO

Clear YES / NO confirmations for critical roofing components, each with supporting code references.

  • Ice & Water Shield (IWS)
  • Drip edge
  • Valley liner
  • Underlayment
  • Chimney cricket

2021 IECC requirements

Energy

Energy compliance matters more than ever in changing climates. Your report aligns the project with both code and performance standards.

  • Climate zone classification
  • Elevation data
  • Insulation requirements for wood-frame walls

Manufacturer specs

YES / NO

Working with a specific shingle manufacturer can change code enforcement. The report states YES / NO for whether installation must follow manufacturer guidelines, with a built-in fallback to best practice.

R903.1 · General Roof Assembly

Roofing permit required

YES / NO

Know upfront whether the jurisdiction requires a permit to pull the roof, so the cost and the timeline are in the estimate from the start.

  • Clear YES / NO for the property
  • Tied to the governing jurisdiction
  • Feeds the permit fee calculation

R105.1 · Permits Required

Class 4 shingle required

YES / NO

Impact-resistant shingle requirements are driven by local amendments, not the base code, and they carry a material cost difference.

  • Clear YES / NO for the property
  • Sourced from local amendments
  • Catches a spec that base-code lookups miss

Local amendment

Ice & Water Shield (IWS)

Required

Instant clarity on whether IWS is required at the eaves, one of the most expensive line items to miss.

  • Clear YES / NO
  • Backed by IRC and local amendments
  • Eliminates missed scope and avoids supplements
Open IWS Calculator →

Drip edge

Required

Know exactly if drip edge is required and how it must be installed.

  • Code-backed confirmation
  • Installation specifics included
Open Drip Edge Calculator →

Valley liner

High risk

Valleys are high-risk areas. The report specifies the exact requirement.

  • Whether liners are required
  • Material types
  • Installation methods

Underlayment

Spec

Understand the exact underlayment system required.

  • Type (felt, synthetic, etc.)
  • Application method
  • Code compliance requirements

Chimney cricket

Conditional

The report confirms whether a chimney cricket is required, so no missed detail leads to a failed inspection.

  • Based on chimney width
  • Based on roof slope
  • Based on code thresholds

Sheathing

Structural

One of the most overlooked and critical components, covered for structural compliance and long-term durability.

  • Sheathing thickness requirements
  • Span ratings
  • Edge support requirements

IRC Table R503.2.1.1(1) · APA

Read more about sheathing requirements →

Data integrity & accuracy

Building Code Intelligence Across 32,000+ Jurisdictions

OneClick Code connects each property to its governing jurisdiction, adopted code editions, local requirements, and applicable tax information.

Our data is continuously maintained as jurisdictions adopt new codes and update local requirements, giving users a stronger starting point than manual research and assumptions.

32,000+

U.S. jurisdictions covered

Continuously maintained Jurisdiction-level Cited to code

Who it's for

Built for everyone who touches the estimate

For Builders

Deliver code-aligned estimates that reduce risk and improve project speed.

For Roofing Contractors

Win more jobs and get paid faster with accurate, defensible estimates built on verified code data.

For Insurance Adjusters

Process claims correctly by ensuring every scope aligns with local building codes.

For Estimators

Generate consistent, accurate estimates across jurisdictions without manual research.

For Insurance Carriers & Supplements

Establish a trusted, objective standard for claims, reducing disputes and accelerating approvals.

Why OneClick Code

Why Teams Use OneClick Code

Research faster

Access property-specific jurisdiction, code, and tax information without piecing it together manually.

Estimate more accurately

Identify applicable roofing requirements before the estimate is submitted.

Document every answer

Support YES or NO requirements with the applicable code citation.

Frequently asked questions

How often is your building code database updated?

Our database is continuously maintained with jurisdiction-level changes and undergoes validation cycles to ensure accuracy and freshness.

Do you cover all jurisdictions in the United States?

OneClick Code covers over 98% of residential and commercial roofs across the U.S., including city, county, and municipal jurisdictions.

What types of properties can I use OneClick Code for?

The platform supports both residential and commercial properties, including pitched and flat roofing systems.

Foundation first. Then a code-backed YES or NO on everything.

Property, authority, codes, tax. Then every line item that follows:

  • IWS
  • Drip Edge
  • Valley Liner
  • Underlayment
  • Chimney Cricket
  • Sheathing

Every answer cited. Every estimate defensible.