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PLAN ID: EKC-STR-007Duplex & Villa Structures • Twin / Terrace RC FrameBS 8110-1:1997 & Eurocode 2

The Kensington 4-Bedroom Twin Semi-Detached Duplex Structure

Semi-Detached Twin Duplex (2 Mirror Units × 4-Bedrooms) • Fits 650–800 sqm Plots

Standard Turnkey Build~₦272K/m²
NGN 185,000,000
NGN₦185.0M
USD$118K
GBP£93K
EUR€109K
The Kensington 4-Bedroom Twin Semi-Detached Duplex Structure
C30/37 Structural Concrete throughout Columns, Beams, Staircases & Suspended Deck
Visual 1 of 2
GROSS FLOOR / PLOT AREA680 sqm / 700 sqm
STRUCTURAL LEVELS2 Levels (Ground + First Floor across Twin Symmetrical Wings)
REBAR & CONCRETE BOQ41.5T • 335m³
EST. BUILD DURATION32 – 40 Weeks (8–10 Months)
COREN Structural Engineering Schedule • EKC-STR-007

Complete 12-Point Structural & Civil Specifications

Engineered for landowners and family builders who want two independent 4-bedroom luxury duplexes on a single plot. Features an acoustic double-leaf structural party wall, independent foundation tie beams, separate gate entrances, and 2 en-suite BQs.

01. Structural Frame System

Symmetrical Twin Reinforced Concrete Frame with Acoustic Double-Wall Separation

02. Governing Design Codes

BS 8110-1:1997 & Eurocode 2

03. Substructure & Foundation System

Combined Pad & Strip Foundation with Central Eccentricity Strap Beams

04. Concrete Strength Grade

C30/37 Structural Concrete throughout Columns, Beams, Staircases & Suspended Deck

05. Reinforcement Steel Specification

High-Yield TMT Bars fy = 460–500 N/mm² (Y12, Y16, Y20)

06. Suspended Floor Slab System

175mm Solid Two-Way Reinforced Concrete Suspended Slab

07. Column Grid & Section Sizes

5.2m × 5.8m Grid per Wing | 230×300mm & 230×450mm RC Columns

08. Primary & Cantilever Beam Specs

230×450mm Main Floor Beams | 230×500mm Cantilever Balcony Beams

09. Blockwork & Shear-Wall System

300mm Acoustic Central Party Wall + 225mm Vibrated Sandcrete External/Internal Walls

10. Roof Trusses & Parapet Drainage

Independent Parapet RC Gutters per Wing + Steel/Timber Trusses (0.55mm Step-Tile)

11. Required Soil Bearing Capacity

Minimum 135 kN/m² (Raft Option Available for Coastal/Soft Soils)

12. Wind Load & Factor of Safety

Expansion/Movement Joint Integrated Along Central Party Axis

Lead Structural Engineer

Engr. Chibuike Ekeson, FNSE, COREN

Principal Civil & Structural Engineer

EST. BUILD PRICE:NGN 185,000,000
Direct WhatsApp Engineering Quote Preview

“Hello Engr. Ekeson & Ekesonconstruct Civil Engineering Desk, I inspected the full structural details for "The Kensington 4-Bedroom Twin Semi-Detached Duplex Structure" [Plan ID: EKC-STR-007]. Selected Scope: Standard Turnkey Build | Soil Profile: Firm Laterite Soil (Pad/Strip Baseline) | Website Estimated Build Cost: NGN 185,000,000. Please share the itemized BOQ and mobilization schedule for my land.”

Ask Exact Price to Build on WhatsAppCall Lead Engineer: +234 800 353 7662
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