Certified Class A buildings in London now command a measurable rent premium and are the default expectation for institutional tenants signing 10-year leases.

• Trophy London product (e.g., City of London) is overwhelmingly LEED Gold/Platinum or local-equivalent certified.
• Green premium across major markets runs 5–15% on rent and shows in valuation cap rates.
• Mandatory disclosure regimes are tightening globally; uncertified stock is increasingly hard to lease to investment-grade tenants.
• Most London ESG underwriting now pulls operational energy data, not just certification badges.

TL;DR

• Trophy London product (e.g., City of London) is overwhelmingly leed">LEED Gold/Platinum or local-equivalent certified.
• Green premium across major markets runs 5–15% on rent and shows in valuation cap rates.
• Mandatory disclosure regimes are tightening globally; uncertified stock is increasingly hard to lease to investment-grade tenants.
• Most London ESG underwriting now pulls operational energy data, not just certification badges.

What's certified in this market

London's trophy inventory is overwhelmingly certified — LEED Gold/Platinum in markets that follow USGBC, BREEAM Excellent/Outstanding in UK and parts of EMEA, CASBEE in Japan, Green Mark in Singapore. Notable certified London buildings include 22 Bishopsgate (BREEAM Excellent), 8 Bishopsgate (BREEAM Outstanding), 100 Liverpool Street (BREEAM Excellent).

The rent premium is real

Across major Tier 1 markets, certified Class A buildings command a 5–15% rent premium versus equivalent uncertified stock. The premium is largest at the top of the curve (Platinum vs. uncertified Class A) and narrows in mid-tier comparisons.

What occupiers should ask for

In a Class A LOI, ask for: (1) current certification status and pathway to renewal, (2) operational energy intensity (kWh/sqm/yr) over the trailing 24 months, (3) green-lease provisions covering data sharing, and (4) tenant fit-out alignment with the building's certification. London leases are predominantly Full Repairing and Insuring (FRI). Tenant pays service charge and is responsible for dilapidations on lease end. Rent reviews to open-market rent every 5 years are standard. Rent-free periods of 18-30 months on a 10-year term are typical, with 'capped' rent-free for break-clause certainty. Personal guarantees are uncommon for institutional tenants; rent deposits are common for younger covenants.

Key facts

Frequently asked questions

Do London landlords pay for the ESG premium?

Tenants pay it through rent. The economic case is energy-cost savings + brand value + retention; the strategic case is futureproofing against tightening disclosure regimes.

Which certification matters most in London?

LEED is the global default occupiers recognise; the local equivalent (BREEAM in the UK, CASBEE in Japan, Green Mark in Singapore) often carries equal or greater regulatory weight.

Editorial provenance

Reviewed by Samuel Okafor — EMEA contributing editor. Last updated 2026-04-15. See our methodology and editorial standards.

Primary sources for this page

• CBRE Marketview reports — CBRE
• JLL Office Insight — JLL
• Cushman & Wakefield Marketbeat — Cushman & Wakefield
• Savills World Research — Savills
• Colliers Global Office Outlook — Colliers

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Related topics

• ESG / LEED for Tenants — How tenants evaluate, negotiate, and report on ESG performance in a Class A office lease.