ComSurv Blog

Commercial survey guides, costs and jargon, explained.

Practical, well-sourced guides for tenants, landlords and buyers navigating commercial surveys, leases and dilapidations across the UK.

Tidy but tired commercial office interior mid-occupation in warm light
Dilapidations

Terminal vs Interim Dilapidations: What’s the Difference?

Terminal dilapidations are dealt with at lease end; interim during the term. The remedies and tactics differ. Here is what separates them.

10 August 2026 · 6 min read
Handsome UK commercial building exterior at golden hour
Dilapidations

Section 18 of the Landlord and Tenant Act 1927: The Dilapidations Cap, Explained

Section 18 caps a landlord's dilapidations damages at the drop in the property's value, which can be far less than the cost of the works. Here's how it works.

8 August 2026 · 7 min read
Commercial office building exterior at golden hour
Building Survey

Commercial Building Survey vs Valuation: Which Do You Need Before Buying?

A survey tells you the building’s condition; a valuation tells a lender what it is worth. They answer different questions, and buyers often need both.

5 August 2026 · 6 min read
A surveyor’s clipboard and pen on the windowsill of a vacated commercial office
Dilapidations

Received a Schedule of Dilapidations? A Tenant’s Step-by-Step Response Guide

Received a Schedule of Dilapidations? Don’t panic, and don’t ignore it. Here is the step-by-step of what it is, your window to respond, and how to reduce it.

1 August 2026 · 7 min read
Vacated commercial unit at the end of a lease showing wear
Dilapidations

Dilapidations Explained: The 56-Day Protocol, Scott Schedule and Your Options

At lease end, landlords serve a Schedule of Dilapidations and a quantified demand. The Pre-Action Protocol sets the timetable. Here’s how it works and how to respond.

30 July 2026 · 8 min read
Worn, vacated industrial commercial unit at lease end
Dilapidations

Dilapidations Claim Costs: How Much Could You Pay at Lease End?

Dilapidations claims can run into tens of thousands, but the opening figure is a negotiating position, not a bill. Here is what drives the cost and how it comes down.

23 July 2026 · 7 min read
A tidy, well-maintained commercial building plant room and services
PPM

Planned vs Reactive Maintenance: The True Cost of Waiting for Things to Fail

Reactive repairs cost more, every time. Here is the true cost of waiting for things to fail, and why a planned maintenance plan pays back across a portfolio.

20 July 2026 · 6 min read
Empty commercial unit at lease handover with rolled plans and a tape measure in warm daylight
Schedule of Condition

How Much Does a Schedule of Condition Survey Cost in 2026?

A Schedule of Condition typically costs from a few hundred to a couple of thousand pounds, but it caps a dilapidations bill that can run to tens of thousands. Here's what drives the price.

16 July 2026 · 6 min read
Exposed steel beams, brick and building services inside a commercial building
Building Survey

What Does a Commercial Building Survey Cover? Structure, Fabric and Services

A commercial building survey covers structure, roof, fabric, services and defects. Here is exactly what a surveyor inspects and what the report gives you.

13 July 2026 · 6 min read
Keys and a lease folder on the windowsill of an empty commercial office
Schedule of Condition

FRI Leases Explained: Why Tenants Need a Schedule of Condition

On an FRI lease you are on the hook to repair and hand back the property in good order, whatever its state when you moved in. A Schedule of Condition is how you cap that.

9 July 2026 · 6 min read
Interior of a commercial unit showing exposed structure and services being inspected
Building Survey

Pre-Purchase Due Diligence: The Commercial Property Buyer’s Checklist

Buying commercial property? A survey is one part of due diligence. Here is the buyer’s checklist, from condition and services to compliance and legal.

2 July 2026 · 7 min read
Detail of a commercial building facade and roofline being assessed in warm light
Building Survey

Commercial Building Survey Cost: What Drives the Price in 2026

A commercial building survey is scoped to the building, so cost varies widely. Here is what drives the price in 2026, and why it is cheap next to the wrong building.

26 June 2026 · 6 min read
Empty commercial unit interior in warm light
Schedule of Condition

Schedule of Condition vs Dilapidations: How One Prevents the Other

A Schedule of Condition is made at the start of a lease; dilapidations are argued at the end. Get the first right and the second is far smaller.

23 June 2026 · 6 min read
Two adjoining commercial buildings sharing a boundary wall in warm daylight
Schedule of Condition

Party Wall Schedule of Condition: Recording a Neighbour’s Property Before Works

Before works near a party wall, a Schedule of Condition records the neighbour’s property so any later damage claim can be judged fairly. Here is how it works.

16 June 2026 · 6 min read
A commercial building flat roof with tidy plant and services in warm light
PPM

PPM Surveys Explained: Building a 5–10 Year Forward Maintenance Plan

A PPM survey turns reactive repairs into a costed 5–10 year plan. Here is what it covers, what the schedule contains, and who needs one.

12 June 2026 · 6 min read