Guttering is one of the most neglected parts of a house — and one of the most important. Blocked or broken gutters are a leading cause of damp, fascia rot and foundation problems. This guide covers what guttering work costs in Farnham in 2025, from a simple clean to a full house replacement.
Gutter Cleaning — What It Costs
Gutter cleaning is the most frequently needed guttering service and the best preventative maintenance investment for Farnham homeowners.
- Terraced or semi-detached (front only): £60–£100
- 3-bed semi (front and back): £80–£150
- 4-bed detached: £120–£200
- Properties with significant tree cover: add 20–30%
Annual autumn gutter cleaning in Farnham is strongly recommended — the area's mature tree cover blocks gutters quickly, and a single blocked winter causes more damage than the cost of annual cleaning.
BS EN 12056-3, the standard for roof drainage, requires gutters and downpipes to be sized and pitched to carry the design rainfall for the roof area they serve, preventing overflow in heavy rain.Source: BS EN 12056-3
Gutter Repairs — What It Costs
Many guttering issues don't require full replacement — a single cracked section, a failed union joint, or a sagging bracket can be repaired for a fraction of the replacement cost.
- Single section replacement (up to 2m): £60–£120
- Union joint repair: £40–£80
- Re-pitching a sagging run: £80–£150
- Downpipe repair or replacement: £80–£160
Full Gutter Replacement — What It Costs
When gutters are cracked in multiple places, have failing brackets throughout, or are over 25 years old, full replacement is usually more cost-effective than continued repair.
- Front of 3-bed semi (fascia + guttering): £200–£400
- Full house (3-bed semi, all elevations): £600–£1,000
- Full house (4-bed detached): £800–£1,500
- Cast iron replacement (like-for-like): add 40–60%
What Affects the Cost
Height and access is the biggest variable — two-storey properties require more scaffold or a larger platform than single-storey. Profile choice affects material cost — standard half-round uPVC is cheapest, ogee and deep-flow profiles cost more. Cast iron is significantly more expensive than uPVC but appropriate for period properties in Farnham's conservation areas. Fascia condition matters — if fascia boards need replacing first, add that cost.
One Thing Often Missed
Guttering that overflows at specific points is often a fall issue rather than a blockage — the gutter run isn't pitched correctly towards the downpipe. Re-pitching an incorrectly installed run costs relatively little and permanently solves an overflow problem that cleaning never will. If you've had gutters cleaned multiple times and still experience overflow at the same point, it's worth asking whether the fall is correct.
Why Guttering Costs Vary So Much Between Quotes
Guttering quotes for the same property can vary significantly between contractors. The main reasons are material specification — cheap uPVC versus quality cast-iron-effect aluminium can double the material cost — bracket spacing (wider-spaced brackets are cheaper but sag sooner), fall angle (correct pitching takes time to set up properly), and what happens to the waste (skip hire or load-and-go both have costs that some quotes exclude).
When comparing quotes, confirm they specify the same profile, the same bracket spacing (600mm maximum), the same fall specification, and the same waste disposal method. A quote that's 30% cheaper than two others is almost always explaining that difference somewhere in the specification.
When to Repair vs When to Replace
The decision between repairing and replacing a gutter section comes down to the extent of the failure and the age of the system. A single cracked section on a 5-year-old system — repair it. Multiple weeping joints, sagging brackets and cracked sections across a 20-year-old uPVC system — replace it. The economics change at the point where each successive repair visit costs more than a portion of the replacement.
Cast iron guttering is almost always worth repairing rather than replacing — the material is superior to any uPVC alternative, and proper repair of cast iron extends its life indefinitely. The exception is when the metal has corroded through, which is irreparable and requires replacement in kind.
Last reviewed: 19 July 2026
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