Building Spaces. Transforming Lives. T&T brings construction and interior design together to create practical and beautiful spaces for homes and businesses.
Building Spaces. Transforming Lives. T&T brings construction and interior design together to create practical and beautiful spaces for homes and businesses.
Every build follows a defined sequence from site setting out to structural frame, enclosure, services first fix, and bespoke finishes. Understanding each stage helps clients monitor milestones and prepare for subsequent trade packages.
Setting out checks, reinforcement inspections, and certified concrete pours form the backbone of the structure. Allowing adequate curing time guarantees load-bearing integrity before upper slabs are formed.
Masonry walling, lintel placement, and roof coverings enclose the space. Once weather-tight, plumbing and electrical rough-ins proceed seamlessly before plasterwork, screeding, tiling, and cabinetry installations.
A structured building programme breaks down the entire journey from greenfield site to finished home into 6 verified stages:
| Milestone Phase | Core Construction Activities | Typical Duration Range | Key Sign-Off Deliverable |
|---|---|---|---|
| 1. Setting Out & Earthworks | Site clearance, boundary pegging, optical levelling, foundation excavation, termite treatment | 1–3 weeks | Surveyor setting out certificate & soil bearing approval |
| 2. Substructure & Foundation | Blinding concrete, rebar cage placement, foundation pour, plinth masonry, hardcore compaction, DPM/DPC | 2–4 weeks | Structural engineer foundation inspection & concrete cube test results |
| 3. Superstructure & Framing | Reinforced concrete columns, ring beams, suspended floor slabs, machine-cut stone walling | 4–8 weeks | Floor slab pre-pour inspection & 28-day concrete strength verification |
| 4. Roof Framing & Covering | Steel/timber truss erection, purlins, underlay insulation, concrete tiles or sheet covering, rainwater gutters | 2–4 weeks | Roof weather-tightness verification before interior trade commencement |
| 5. First-Fix MEP & Wet Trades | Concealed plumbing and wiring rough-in, window frame installations, internal plaster, floor screeding | 3–6 weeks | Plumbing pressure test & electrical insulation resistance test |
| 6. Finishes & Handover | Ceilings, tiling, custom joinery, painting, lighting fittings, external works, snagging | 4–8 weeks | Formal Certificate of Practical Completion & Handover Key Exchange |
Essential quality gates that must be signed off by qualified engineers before commencing the next construction package:
| Building Stage | Statutory / Quality Inspection | Verification Method | Risk if Overlooked |
|---|---|---|---|
| Design & Permitting | County Architectural & Structural Approval, NEMA licence, NCA registration | Official stamped municipal permit drawings and NCA project plaque | Stop-work enforcement notices, site closures, and hefty municipal fines |
| Structural Concrete | Ready-mix batch certification or calibrated on-site mix design (e.g. Class 25) | Slump test on arrival, 7-day and 28-day laboratory concrete cube crushing tests | Catastrophic structural failure, honeycombing, or slab sagging |
| Steel Reinforcement | High-yield deformed rebars (KEBS approved BS 4449 standard) | Tensile test certificates; on-site engineer verification of lap lengths and rebar spacing | Inadequate tensile load capacity and seismic/vibration cracking |
| Waterproofing | Substructure DPM membrane and bathroom wet area tanking | Visual puncture inspection and 24-hour static ponding water test | Capillary rising damp, efflorescence, ruined wooden cabinetry and peeling paint |
Use this form to ask a construction, renovation or interior design question.
Building spaces and transforming lives through practical planning, skilled construction and considered interior design in Nairobi, Kenya.
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Project Discussion
Planning NoteReply
Project planningBegin with the purpose of the space, then align the building scope and interior direction around that need.
Design NoteReply
Interior planningBegin with the purpose of the space, then align the building scope and interior direction around that need.