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REA 405 · Unit 2 of 6

Building Systems, Energy and Maintenance

PropTech and Real Estate Operations

Start unit · 4 lessons →

Learning objectives

After completing this unit, you will be able to:

  • Produce reconciled analysis suitable for IC review
  • Apply the frameworks in "Building Systems, Energy and Maintenance" to a real management decision
  • Make progress on your Knowledge check quiz applied project

Why this matters

Building Systems, Energy and Maintenance drives capital allocation, operations, and investor reporting at Harborstone Properties.

Lesson

Unit overview

Complete all four lessons in order. Each lesson follows the gold-standard authoring pattern: conceptual prose, Harborstone worked examples, practice problems with solutions, and managerial judgment prompts. Finish the unit quiz and lesson exercises before marking the unit complete.

Connection to applied work

This unit feeds directly into Knowledge check quiz. As you read, capture notes, examples, and data you can reuse in that deliverable. Strong students finish each unit with a draft section of their project, not just highlights.

Practice

  1. Write a one-page summary of this unit in your own words without looking at the lesson.
  2. Find a real company example (public filing, news article, or personal experience) that illustrates the main concept.
  3. Draft one paragraph recommending an action a manager should take based on this unit.
  4. Add at least three terms from this unit to your course glossary.

Knowledge check

Answer these without notes before marking the unit complete:

  1. What is the central idea of "Building Systems, Energy and Maintenance"?
  2. What mistake do beginners most often make when applying this material?
  3. How does this unit help you complete Knowledge check quiz?
  4. What is one decision you face this month where this unit applies?

Key takeaways

  • Produce reconciled analysis suitable for IC review
  • Business concepts only matter when they change a decision.
  • Your REA 405 assessment (Building Systems, Energy and Maintenance in the Real Estate concentration. All examples use Harborstone Properties ($2.4B AUM).) rewards applied understanding, not memorization.

Unit assessment

Complete each section below. Score 80%+ on the quiz to finish this unit's assessment.

50% applied project30% case work20% knowledge checks

Exercises

Apply what you learned in this unit with structured practice.

ExerciseApplied practice: Building Systems, Energy and Maintenance45 min
Complete a focused practice exercise on **Building Systems, Energy and Maintenance**. 1. Choose a real company, product, or situation you know. 2. Apply one core framework from this unit to analyze it. 3. Write your analysis in 300–500 words with a clear recommendation. 4. Cite at least one credible source.

Deliverable

300–500 word analysis document saved to your portfolio under REA 405.

Rubric

  • • Framework applied correctly (not just named)
  • • Specific evidence from a real example
  • • Clear recommendation with tradeoffs acknowledged
  • • Professional writing with source citation
ExerciseDrill: Building Systems, Energy and Maintenance30 min
Work through the practice problems in the unit lesson without looking at notes. Then check your work against the lesson and write a short reflection: - What you got right - One mistake you caught - One concept to review before the next unit

Deliverable

Problem solutions + 150-word reflection in your REA 405 workbook.

Rubric

  • • Attempted all practice items before checking answers
  • • Honest reflection on errors
  • • Identifies a specific review action

Model / spreadsheet

Build or extend a spreadsheet model tied to this unit.

ModelStructured model: Building Systems, Energy and Maintenance60 min
Create a structured analytical model for **Building Systems, Energy and Maintenance**. Document your assumptions, calculations, and conclusions in a format appropriate to REA 405 (diagram, table, or written model). Connect outputs to a decision a manager would make.

Deliverable

Structured model document (2+ pages) · One-paragraph summary of key insight from the model · Screenshot or export saved to portfolio

Rubric

  • • Assumptions stated explicitly
  • • Logic is auditable (formulas or steps visible)
  • • Output answers a specific business question
  • • Sensitivity or scenario considered

Knowledge quiz

Check your understanding before marking the unit complete.

1. Harborstone ($2.40B AUM) is analyzing **Building Systems, Energy and Maintenance**. Does LED retrofit and BMS upgrade at Meridian Flex clear Harborstone's ROI hurdle? Which step comes first in a disciplined process?

2. Which definition is correct for Harborstone underwriting in Building Systems, Energy and Maintenance?

3. Tom Bradley presents a base-case IRR for Building Systems, Energy and Maintenance. Sofia Reyes asks for downside coherence. What is the best response?

4. Which evidence label fits broker OM pro forma rent growth without independent verification?

5. Fund IV LPs ask how Building Systems, Energy and Maintenance affects DPI and TVPI reporting. What should the memo include?

6. A common failure mode when applying Understanding Building Systems, Energy and Maintenance is:

7. Carlos Ruiz proposes a PropTech pilot tied to Building Systems, Energy and Maintenance. What guardrail belongs in the business case?

8. Which workbook element is most critical for REA 405 applied work on Building Systems, Energy and Maintenance?

Next unit: Property Management Technology →