Cost of Roofing a 3-Bedroom House in Lagos (2026 Breakdown)

Roofing is one of the biggest single expenses in any building project — and also one of the most misunderstood. Walk into a roofing market in Lagos and you'll get wildly different quotes from supplier to supplier. Most homeowners end up overpaying simply because they didn't know what questions to ask.

This guide gives you a clear, honest breakdown of what it actually costs to roof a standard 3-bedroom bungalow or duplex in Lagos in 2026 — including materials, labour, and the factors that push the price up or down.

What Affects the Cost of Roofing in Lagos?

Before any number makes sense, you need to understand the variables.

1. Roof size and pitch

A 3-bedroom bungalow in Lagos typically covers 100–150 square metres of floor space, but the actual roof area depends on the pitch (slope angle). A steeper roof means more surface area and more sheets. Most Nigerian residential roofs run from 110–180 m² of roof surface.

2. Roofing sheet type

This is the biggest cost driver. Your three main options are long span, step tile, and Metcopo aluminium sheets. Stone-coated steel is the premium tier:

Sheet Type	Cost Range (per m²)	Best For
Long Span Aluminium	₦3,500 – ₦5,500	Budget builds, warehouses
Step Tile Aluminium	₦4,500 – ₦7,000	Residential, mid-range homes
Stone-Coated Steel	₦9,000 – ₦18,000	Premium homes, long-term value

3. Gauge (sheet thickness)

0.45mm is the entry-level standard; 0.55mm costs 15–25% more but lasts significantly longer in coastal and high-humidity areas like Lagos. For most residential buildings, 0.45mm provides adequate performance, while 0.55mm is recommended for coastal properties and areas prone to heavy rainfall. For a full breakdown of the lifespan difference, see our guide on 0.45mm vs 0.55mm roofing sheet lifespan.

4. Labour costs

Roofing labour in Lagos ranges from ₦250,000 to ₦600,000 for a full 3-bedroom job, depending on the contractor's experience, the complexity of the roof shape (hips, valleys, and dormers all add cost), and whether scaffolding is needed.

5. Accessories

Ridges, flashings, gutters, fascia boards, roofing nails, and underlays are frequently quoted separately and often left out of initial estimates. Budget 15–20% on top of your sheet cost for accessories.

Cost Breakdown: 3-Bedroom Bungalow in Lagos (2026)

Using a 140 m² roof surface as our baseline:

Option 1 — Long Span Aluminium (0.45mm)

Item	Quantity	Unit Cost	Total
Long span sheets (0.45mm)	140 m²	₦4,000	₦560,000
Ridges & accessories	—	—	₦90,000
Labour	—	—	₦280,000
Total			₦930,000

Option 2 — Step Tile Aluminium (0.55mm)

Item	Quantity	Unit Cost	Total
Step tile sheets (0.55mm)	140 m²	₦6,000	₦840,000
Ridges & accessories	—	—	₦120,000
Labour	—	—	₦320,000
Total			₦1,280,000

Option 3 — Stone-Coated Steel (Premium)

Item	Quantity	Unit Cost	Total
Stone-coated tiles	140 m²	₦13,000	₦1,820,000
Ridges & accessories	—	—	₦200,000
Labour (specialist)	—	—	₦450,000
Total			₦2,470,000

Note: These figures are 2026 Lagos market estimates. Prices fluctuate with the dollar exchange rate since most aluminium coil is imported. Always get a written quote locked to a specific validity period.

3-Bedroom Duplex vs Bungalow — Does It Cost More?

Yes — significantly. A 3-bedroom duplex typically has a larger roof footprint and may include balconies, setbacks, and more complex geometry. Expect the duplex roof area to be 160–220 m², pushing material costs alone to ₦1.2M–₦2M depending on sheet type. Labour also rises because work at height requires more time and safety measures. For a complete cost breakdown of a larger build, read our dedicated guide on the cost of roofing a 4-bedroom duplex in Nigeria (2026).

Where Homeowners Lose Money on Roofing

• Buying from multiple small suppliers. Each supplier cuts sheets differently. Mixing batches leads to colour variation and sizing inconsistency.
• Ignoring accessories in the budget. Ridges, flashings, and gutters are not optional — they prevent leaks. Many quotes omit them to look competitive.
• Choosing cheap labour over experienced installers. A poorly installed ₦1M roof will cost more to fix than a correctly installed ₦1.3M roof built to last 20+ years.
• Not confirming gauge. Ask to see the coil certification or caliper-measure the sheets yourself before accepting delivery.

How to Get an Accurate Quote in Lagos

The most reliable approach:

1. Get your architect's drawing and extract the actual roof area (in m²)
2. Decide on sheet type and gauge based on your budget and location — see our guide to types of aluminium roofing sheets in Nigeria
3. Request an itemised quote — sheets, accessories, and labour billed separately
4. Compare at least 2–3 suppliers, but verify quality directly

At Gods Promise Aluminium, we provide free written quotes that include sheet cost, accessory list, and delivery within 24 hours. View our current pricing or contact us for a quote tailored to your roof.

Why Choose Gods Promise Aluminium?

We manufacture long span, step tile and Metcopo profiles in-house at our Lagos factory — which means no middlemen and no inflated market prices. Every sheet is produced to the stated gauge and customers are welcome to verify at our factory before dispatch. We also supply Gerard stone-coated tiles imported from New Zealand for premium projects.

Nationwide delivery available. WhatsApp us on 09150459964 or visit our factory at Km 38, Lagos-Abeokuta Expressway, Sango Ota, Ogun State.