---
title: "Deep retrofit — Class A Atlas glossary"
description: "Whole-building reposition including facade, MEP, and core upgrades."
canonical: https://classa.info/glossary/deep-retrofit
pageType: glossary
lastUpdated: 2026-04-01T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Whole-building reposition including facade, MEP, and core upgrades.

## TL;DR

- Whole-building reposition including facade, MEP, and core upgrades.
- Common Class A reposition strategy in mature markets (London City, Tokyo Marunouchi).

# Deep retrofit

*Construction · Global*

## Short definition

Whole-building reposition including facade, MEP, and core upgrades.

## Full definition

Common [Class A](/glossary/class-a) reposition strategy in mature markets (London City, Tokyo Marunouchi). Typically delivers a 'new-build equivalent' product at 60–70% of new-build cost, with embodied-carbon advantage.

## Why this matters for Class A leasing

Deep retrofit is part of the construction vocabulary that institutional Class A occupiers, landlords, and advisers use across Global markets. Understanding it correctly affects how you read lease documents, model occupancy economics, and benchmark deal terms across cities. Class A Atlas tracks regional variation alongside the global standard so [cross-border](/topics/cross-border-expansion) occupiers can translate quickly.

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Citation: Source: Class A Atlas (https://classa.info/glossary/deep-retrofit), updated 2026-04-01T00:00:00.000Z.