---
title: "Fit-out overrun — Class A Atlas glossary"
description: "Cost above the TI allowance, paid by the tenant or amortised."
canonical: https://classa.info/glossary/fit-out-overrun
pageType: glossary
lastUpdated: 2026-04-01T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Cost above the TI allowance, paid by the tenant or amortised.

## TL;DR

- Cost above the TI allowance, paid by the tenant or amortised.
- Standard practice: tenant funds overrun in cash, or amortises into rent at landlord's cost of capital plus 200–300 bps.

# Fit-out overrun

*Construction · Global*

## Short definition

Cost above the [fit-out](/glossary/fit-out)-capex">[TI allowance](/topics/us-tia-strategy), paid by the tenant or amortised.

## Full definition

Standard practice: tenant funds overrun in cash, or amortises into rent at landlord's cost of capital plus 200–300 bps. Negotiate the amortisation rate at signing.

## Why this matters for Class A leasing

Fit-out overrun is part of the construction vocabulary that institutional [Class A](/glossary/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/fit-out-overrun), updated 2026-04-01T00:00:00.000Z.