---
title: "Mayfair & St James's, London fit-out and specification"
description: "Typical fit-out specification in Mayfair & St James's — Cat-A condition, MEP scope, and tenant capex bands."
canonical: https://classa.info/cities/london/mayfair-st-james/topics/fit-out-and-spec
pageType: nb-topic
lastUpdated: 2026-04-15T00:00:00.000Z
license: "CC BY 4.0 with attribution to Class A Atlas (https://classa.info)."
---

> Mayfair & St James's trophy buildings deliver a high-end Cat-A baseline; tenant fit-out typically lands in the High-end or Trophy bands.

## TL;DR

- Typical spec: Small floor plates (3-8,000 sqft), period features, restored period detailing combined with Cat A spec.
- London fit-out range — Basic $110–145/sqft, Trophy $320–480/sqft.
- Submarket tier: trophy.

# Mayfair & St James's, London fit-out and specification

**Mayfair & St James's trophy buildings deliver a high-end Cat-A baseline; tenant [fit-out](/topics/fit-out-capex)">fit-out typically lands in the High-end or Trophy bands.**

## TL;DR

- Typical spec: Small floor plates (3-8,000 sqft), period features, restored period detailing combined with [Cat A](/glossary/cat-a) spec.
- London fit-out range — Basic $110–145/sqft, Trophy $320–480/sqft.
- Submarket tier: trophy.

## Spec baseline

Small floor plates (3-8,000 sqft), period features, restored period detailing combined with Cat A spec.

## Cost bands

City-wide London fit-out bands: Basic $110–145/sqft, Mid $150–215/sqft, High-end $220–320/sqft, Trophy $320–480/sqft.

## Key facts

| city | London|
| submarket | Mayfair & St James's|
| tier | trophy|
| averageRentLocal | £165/sqft/yr · ≈ $210 PSF/yr USD|
| cityClassARentUsd | $121/sqft/yr|
| cityVacancyPct | 8.6%|

## Frequently asked questions

****What spec level is normal in Mayfair & St James's?****
: Small floor plates (3-8,000 sqft), period features, restored period detailing combined with Cat A spec.

## Related

- [**Mayfair & St James's — submarket overview**](/cities/london/mayfair-st-james)
- [**London — full city profile**](/cities/london)
- [**London submarkets — all**](/cities/london/neighborhoods-overview)
- [**Mayfair & St James's — Rents**](/cities/london/mayfair-st-james/topics/rents-and-availability)
- [**Mayfair & St James's — Tenants**](/cities/london/mayfair-st-james/topics/tenant-profile)
- [**Mayfair & St James's — Transit**](/cities/london/mayfair-st-james/topics/transit-and-commute)
- [**Mayfair & St James's — Amenity**](/cities/london/mayfair-st-james/topics/amenity-and-lifestyle)

## Editorial provenance

Reviewed by [**Samuel Okafor**](/about/authors/samuel-okafor) — EMEA contributing editor. Last updated 2026-04-15. See our [methodology](/about/methodology) and [editorial standards](/about/editorial-standards).

### Primary sources for this page

- [CBRE Marketview reports](https://www.cbre.com/insights) — CBRE
- [JLL Office Insight](https://www.jll.com/en/trends-and-insights) — JLL
- [Cushman & Wakefield Marketbeat](https://www.cushmanwakefield.com/en/insights) — Cushman & Wakefield
- [Savills World Research](https://www.savills.com/research_articles/) — Savills
- [Colliers Global Office Outlook](https://www.colliers.com/en/research) — Colliers

[Full sources index](/about/sources) · [Submit a correction](/about/corrections)

## Related topics

- [**Class A Lease Negotiation**](/topics/class-a-lease-negotiation) — How to negotiate a [Class A](/glossary/class-a) office lease — the playbook from LOI to signed deal.
- [**Hybrid Workplace Strategy**](/topics/hybrid-workplace-strategy) — How to size, structure, and lease a Class A office for a hybrid workforce.
- [**ESG / LEED for Tenants**](/topics/esg-leed-tenants) — How tenants evaluate, negotiate, and report on ESG performance in a Class A office lease.
- [**Cross-border Expansion**](/topics/cross-border-expansion) — How to run a coordinated Class A office search across multiple geographies.
- [**Fit-out Capex**](/topics/fit-out-capex) — How to budget, sequence, and govern Class A office fit-out capex.
- [**Lease vs Flex**](/topics/lease-vs-flex) — When premium flex (coworking, [managed office](/glossary/managed-office)) beats a conventional Class A lease — and vice versa.

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Citation: Source: Class A Atlas (https://classa.info/cities/london/mayfair-st-james/topics/fit-out-and-spec), updated 2026-04-15T00:00:00.000Z.