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B1 prep courses, academies and practice banks compared

DisclosureWe make Rafter Tie, which is one of the options on this page. We describe every option from its own published information and link to it.

What you pay, what renews, and what you get back if it doesn't work for you. That is the comparison that matters before you hand over a card number for the ICC Residential Building Inspector (B1) exam, so it is the one below.

Rafter Tie is one payment: $49 for the practice pack, $99 for the course or $29 for a 7-day pass. The pack and course give you 300 questions and two timed practice exams, and lifetime access. The pass has 7 days of access. Nothing renews and nothing bills you again.

B1 prep options, side by side

Every rival figure comes from the seller's own page, read on 22 Oct 2026. We list facts only. A blank means the page did not say.

OptionPriceAccessRenews?Refund ruleB1 questions
Rafter Tie practice pack and course$49 pack, $99 course, or $29 for a 7-day pass, paid oncePack and course: lifetime access. Pass: 7 daysNoTerms and refunds300, plus 2 timed practice exams
Building Code Academy, read 22 Oct 20267 days free, then $19 a month, or $7.42 a month billed annuallyWhile subscribedYes, each billing period until you cancelFull refund if you ask within 30 days of your first payment. After that, no refunds for partial billing periods2,000+ across all 28 ICC exams. B1 count not stated
EstatePass, read 22 Oct 2026$9.99 a month, $19.99 every 3 months, or $39.99 for lifetimeWhile subscribed, or lifetimeYes on monthly and quarterly. No on lifetimeNot stated on its pricing page. Its 90-day pass program adds 90 days of access and is not a refund. Lifetime buyers are excluded468 in the content-area bank

Rival pricing pages: Building Code Academy and its terms, EstatePass pricing and terms.

What the numbers add up to

  • A monthly plan keeps billing. Twelve months at $19 is $228. The Rafter Tie course is $99 once, with lifetime access.
  • Breadth costs you. Building Code Academy covers 28 ICC exams. If you are sitting B1, you are paying monthly for 27 you will not take.
  • Cheaper is real. EstatePass lifetime is $39.99. It does not carry a refund rule on the page, and its B1 bank is 468 questions to our 300. Pick it if price is the only thing that matters.

What you get for the $99 course

All of these are online prep. For what else can be done remotely, see building inspector certification online.

The B1 is open book: 60 questions in 2 hours, with your IRC beside you. The course trains the skill that decides the result, which is finding the right section fast. You get 7 modules of lessons on how the IRC is laid out, code-navigation drills, 4 worked calculations, a study plan, the 300-question bank, 2 timed practice exams with your score by domain and its change since your last timed exam, and an exam-day guide. The course is written for the 2024 IRC. Check which code edition your exam uses before you buy.

Try the free 10-question check first. You see your score by domain without signing up, so you know which plan you need before you pay.

A practice score is not a prediction

No practice score, ours or anyone's, predicts what you will score on exam day. Use your result to decide what to study next. Questions here are original and written to the published B1 outline.

FAQ

Does anything renew on Rafter Tie?

No. The practice pack, the course and the 7-day pass are one payment each. The pack and course come with lifetime access, and the pass ends after 7 days.

Can I get my money back?

Refund eligibility depends on the plan, request time and paid use. See Terms and refunds.

Does Rafter Tie promise I will pass?

No. Nobody can promise you a pass.

Sources

The ICC B1 course

Available now · instant access

Learn how the IRC is laid out, drill finding sections fast, then practice. Written for the 2024 IRC.

  • 7modules of lessonsEvery task on the outline
  • 4full-length timed exams60 questions in 120 minutes each
  • 426practice questionsEach one explained
  • 4worked calculationsStep by step
  • 8timed code lookups a setFind it fast in IRC, with your median time
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Plumb AI about any question you answer, follow up, then see your weakest topics and what to drill next.

B1 course with IRC navigation drills$99
Get the ICC B1 course · $99

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

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Every answer comes with a full explanation.

The ICC B2 course

Available now · instant access

Learn each B2 outline area, then prove it on timed practice exams.

  • 8modules of lessonsEvery task on the outline
  • 3full-length timed exams80 questions in 210 minutes each
  • 298practice questionsEach one explained
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Plumb AI about any question you answer, follow up, then see your weakest topics and what to drill next.

B2 course$99
Get the ICC B2 course · $99

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

Compare plans

Every answer comes with a full explanation.

The ICC R3 course

Available now · instant access

Learn each R3 outline area, then prove it on timed practice exams.

  • 8modules of lessonsEvery task on the outline
  • 3full-length timed exams60 questions in 120 minutes each
  • 300practice questionsEach one explained
  • 1week-by-week study planSet to your exam date

Turn a practice answer into a study step. In untimed practice, ask Plumb AI about any question you answer, follow up, then see your weakest topics and what to drill next.

R3 course$99
Get the ICC R3 course · $99

Terms and refunds · Secure checkout by Stripe · Billed by Nori Software

Compare plans

Every answer comes with a full explanation.

Checked 2026-10-25. Prices and formats change, so confirm with each provider. Spot something out of date? Tell us.

Free guides

Exam guideThe B1 exam outline: content areas and weightsExam guideICC B2 exam outline: seven areas and weightsExam guideICC R3 exam outline: eight areas and weightsStudy guideHow to read IRC span tables: joists, rafters and headers

Free study plan

A week-by-week plan from today to your exam, weighted to the published exam outline. We show it here and email you a copy.