5 Mistakes That Make Nigerian Landowners Overpay for Fencing

Fencing looks deceptively simple to price — measure the perimeter, multiply by a per-metre rate — but several genuine cost drivers regularly get missed or miscalculated, pushing the final bill well above the number a landowner budgeted from a quick perimeter measurement. This guide covers the five most common mistakes, using the categories priced in our free Fence Cost Calculator.

Mistake 1: Measuring the Perimeter Incorrectly

A surprising number of fencing budgets start from an incorrect perimeter figure — using the plot's stated dimensions from the title document rather than an actual site measurement, which can differ from the legal description due to survey error, boundary disputes, or simply an irregular plot shape that a single length-times-four calculation does not capture. Always measure the actual fence line on site, especially for an irregular or non-rectangular plot, rather than relying solely on paper dimensions.

Mistake 2: Underestimating Pillar Requirements

Pillars are needed at regular intervals along the fence run, and always at every corner and at each side of a gate opening — a plot with an irregular shape or multiple corners needs more pillars proportionally than a simple rectangular plot of the same total perimeter. Pricing only the straight wall sections and treating pillars as a rounding-error afterthought is a common source of budget overrun, particularly on plots with several corners or an unusual boundary shape.

Mistake 3: Choosing Gate Specification Late in the Process

Gate cost varies dramatically by width, type (swing vs sliding) and material, and is easy to underestimate if a generic "standard gate" allowance is used in the initial budget before the actual vehicle and access requirements are settled. A homeowner who initially budgets for a modest 3m swing gate but later decides they need a wider sliding gate for a larger vehicle or a second entrance faces a real cost increase that a more careful upfront specification would have anticipated.

Mistake 4: Skipping Coping and Treating It as Optional

Coping is sometimes cut from a tight budget as a "nice to have," but an uncapped block wall top is directly exposed to rain, which over time causes water ingress into the blockwork, staining, and accelerated deterioration — particularly along a wall's most exposed top course. The modest cost of proper coping, priced per metre, is cheap insurance against a more expensive repair or re-rendering job a few years later.

Mistake 5: Not Comparing Fence Type Against the Actual Requirement

Defaulting to the most expensive fencing option (full block, plastered and painted) on every boundary of a plot, including low-priority rear or side boundaries facing undeveloped land, is a common source of overspend when a lower-cost mesh or lighter fencing option would serve those specific boundaries just as well. Conversely, under-specifying a street-facing frontage with mesh fencing to save money, when privacy and appearance genuinely matter there, is a mistake in the other direction. Match the fence type to what each specific boundary actually needs to achieve, as covered in our fencing comparison guide.

A Pre-Quote Fencing Checklist

• Physically measure the actual fence line on site, not just the paper plot dimensions.
• Count and price pillars separately, including every corner and gate position.
• Settle gate width, type and quantity before finalising the budget, based on actual vehicle and access needs.
• Include coping in the budget rather than treating it as optional.
• Match fence type to each boundary's actual privacy and security requirement, not a single blanket specification.

Getting Multiple Quotes Without Wasting Contractors' Time

Getting two or three competitive quotes is sound practice for a significant fencing job, but repeatedly asking multiple contractors to remeasure the same plot from scratch wastes everyone's time and can make contractors less willing to give a careful, considered quote for what feels like a low-probability opportunity. A more efficient approach is measuring the plot perimeter accurately yourself first, or having a single surveyor or the first contractor confirm it, then providing that agreed measurement to every contractor being asked to quote — this lets them focus their time on pricing rather than re-measuring, and produces more directly comparable quotes since every contractor is pricing against the identical scope and quantity.

When the quotes come back, resist comparing only the bottom-line total — ask each contractor to break their figure down using the same categories this guide covers (walling, pillars, coping, gates, rendering) so a genuinely low quote can be distinguished from one that has simply omitted an item the others included. This is the same discipline recommended elsewhere on this site for reviewing mobilisation and demolition quotes, and it applies just as usefully here.

Frequently Asked Questions

How many pillars does a typical fence need?

This depends on the specific design and pillar spacing used by your contractor, but every corner and every side of a gate opening needs one at minimum, in addition to intermediate pillars at regular intervals along straight runs for structural stability.

Is it cheaper to fix gate specification early or decide later?

Deciding early avoids budgeting against a generic placeholder that may not match your actual final choice — settle gate width and type as early as possible, ideally before the fence pillars either side of the gate opening are built.

What happens if I skip coping to save money now?

The wall top is left exposed to direct rain penetration, which over time can cause staining, cracking and gradual deterioration of the blockwork below — a repair or re-rendering job later that typically costs more than the coping would have.

Can I add coping or pillars to an existing uncoped fence later?

Yes, retrofitting coping to an existing wall is possible and is a worthwhile investment if an older fence was built without it and is starting to show water-related deterioration at the top course — it is generally more straightforward and less disruptive to add than retrofitting additional pillars, which may need new foundation work at each new pillar location.

Is it worth getting a structural engineer involved for a standard boundary fence?

For a standard-height residential fence on reasonably normal ground, most Nigerian contractors have sufficient experience to build a sound wall without formal engineering input — but for an unusually tall fence, a fence on a slope or retaining function, or a plot with known problematic soil, a brief engineering consultation is a modest cost that can prevent a much larger repair bill later.

What should I do if a completed fence starts cracking within the first year?

Early cracking, particularly diagonal cracking near a pillar or gate opening, often points to a foundation or settlement issue rather than a purely cosmetic render problem, and should be assessed rather than simply patched — patching over an active settlement crack without addressing the underlying cause typically sees the crack reopen within a similar timeframe.

Can I negotiate a warranty or defects period with my fencing contractor?

Yes, and this is worth including explicitly in the agreement — a defined defects liability period, during which the contractor remains responsible for correcting genuine workmanship issues (as opposed to damage from an external cause) at no extra cost, is standard good practice on any significant construction contract, including fencing, and should be discussed and agreed before work begins rather than assumed.

How do I verify a fence was built to the agreed specification after completion?

Compare the finished wall's measured height, thickness and pillar spacing against what was agreed in the quote, and ask for confirmation of the foundation depth actually used, ideally observed during construction since it cannot be verified visually once the wall is complete and the trench backfilled.

What is a reasonable timeframe to complete a standard plot's fencing?

For a standard 100x100ft plot with block fencing, allow roughly 3–5 weeks from foundation to finished paint, including adequate curing time for blockwork and render before painting — a contractor promising completion significantly faster than this for a full block specification is worth questioning about whether adequate curing time is genuinely being allowed.

Should I request a written guarantee on fence foundation depth?

Yes — since foundation depth cannot be independently verified once backfilled, having it stated explicitly in the written contract, ideally with a site visit at the point the foundation trench is open, is the most reliable way to hold a contractor accountable to the agreed specification.