Building a home on a budget in Kenya in 2026 is entirely achievable — but only if you start with the right information. Construction costs have climbed sharply: a basic 3-bedroom bungalow now costs between KES 3.5 million and KES 4.5 million, while a mid-range finish pushes that to KES 5M–6.5M. The difference between a project that finishes on budget and one that stalls midway almost always comes down to preparation: a proper Bill of Quantities, approved plans, and phased execution. This guide, written by a BORAQS-registered architect, walks you through every step — from plot selection to final finishes.

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Building a home on a budget in Kenya in 2026 requires: a simple rectangular design to minimise waste; a detailed Bill of Quantities (BOQ) prepared by a quantity surveyor; a 10–25% contingency fund added to the base estimate; direct procurement of materials to avoid markups; phased construction if funds are limited; and building during the dry season (January–March or July–September). Construction rates in 2026 range from KES 35,000/m² for basic finishes to KES 95,000/m² for high-end builds. A standard 3-bedroom bungalow of 100 m² costs between KES 3.5M and KES 9.5M depending on finish level and county.

Section 01

Construction Costs in Kenya 2026

Understanding the cost per square metre is the single most important number in any Kenyan construction budget. It lets you estimate total project cost, compare contractor quotes objectively, and decide on finish levels before committing to a design. In 2026, residential construction in Kenya costs between KES 35,000 and KES 122,860 per square metre, with the wide spread driven by finish quality, building type, and location.

The authoritative source for these rates is the Construction Costs Handbook published annually by the Institute of Quantity Surveyors of Kenya (IQSK), supplemented by data from INTEGRUM Construction Consortium and Aalis Studios' own project records. For a typical 100 m² 3-bedroom bungalow, here is what to expect in 2026:

Finish Level Rate/m² Total — 100 m² What You Get Tier
Basic KES 35,000–45,000 ~KES 3.5M–4.5M Cement screed, basic tiles, corrugated iron roof, aluminium windows Basic
Mid-Range KES 50,000–65,000 ~KES 5M–6.5M Ceramic tiles, box-profile roof, PVC windows, standard sanitary ware Mid
High-End KES 70,000–95,000 ~KES 7M–9.5M Porcelain tiles, stone-coated roof, gypsum ceilings, fitted kitchen High-End
Luxury KES 100,000+ KES 10M+ Italian tiles, smart home systems, imported fittings, landscaping Luxury
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Architect's Note — Aalis Studios

These rates cover construction only — they exclude land purchase, professional fees, county approvals, utility connections, fencing, and landscaping. A realistic all-in budget for a basic 3-bedroom on a 50×100 plot in Kiambu or Ruiru should budget an additional KES 800,000–1,500,000 for those items.

KES 35K
Minimum rate/m² — basic finish
5–8%
Annual cost increase projected 2026
25%
Recommended contingency buffer

Regional Cost Variations Across Kenya

Construction costs are not uniform across the country. Nairobi and its immediate suburbs — Kiambu, Ruiru, Thika — command the highest labour rates and the highest material delivery costs due to traffic and demand. Mombasa adds corrosion-resistant material premiums due to the coastal salt environment. Inland cities such as Kisumu, Nakuru, and Eldoret typically run 10–20% lower than Nairobi rates for equivalent finish levels, making them attractive locations for budget builds.

For rural builds in counties such as Murang'a, Machakos, Kajiado, and Nyandarua, construction costs can be significantly lower — but factor in longer material transport distances and the higher cost of mobilising skilled trade teams from the nearest urban centre.

Section 02

Design Decisions That Save Money

The single biggest lever in budget construction is design — not material selection, not contractor choice. Your floor plan determines how many corners are cut, how large your foundation and roof are, and how much formwork your contractor needs. Get the design right and every other cost line falls into place.

Simple Rectangular Plan
Every additional corner in a floor plan adds formwork, extra reinforcement, and additional roofline complexity. A rectangular or square plan minimises all three. Irregular shapes, curved walls, and L-shaped plans can add 15–25% to structural costs alone.
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Build Up, Not Out
A two-storey maisonette gives the same floor area as a large bungalow but requires half the foundation and half the roof — both expensive items. The cost of the intermediate slab is more than offset by the savings in foundation depth and roofing materials.
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Compact Room Sizes
Kenyan builders often oversize bedrooms. A 3×3.5 m bedroom is comfortable and functional. Reducing total floor area from 120 m² to 100 m² on a mid-range project saves approximately KES 1M–1.5M — money better spent on quality finishes.
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Simple Rooflines
A simple gable or hip roof is vastly cheaper than a complex multi-valley design. Each valley in a roof is a joint that can leak, requires expensive flashing, and needs specialised labour. Stick to two or four slopes maximum on any budget build.
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Standard Opening Sizes
Windows and doors should use standard catalogue sizes to avoid custom fabrication costs. Custom aluminium frames can cost three to four times the price of standard stock items. Design your openings to match supplier standard sizes before drawings are finalised.
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Open Plan Living
Fewer internal partition walls reduce block, mortar, plaster, and tiling costs. An open-plan kitchen-dining-sitting arrangement is both modern and economical — eliminating two or three full partition walls can save KES 150,000–300,000 on a standard bungalow.
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Arch. Vincent Abuya — Aalis Studios

At Aalis Studios, we run a design-to-budget process that starts with your available funds and works backwards to the most comfortable, attractive house we can deliver at that cost. We never hand you an expensive design and ask you to cut corners — we design corners-out from the beginning. Learn about our design services →

Section 03

Step-by-Step Construction Procedure

This is the complete construction procedure for a house in Kenya, from pre-planning to occupancy. Each step must be completed in sequence — skipping stages to save time almost always results in costly remedial work later. A BORAQS-registered architect can oversee the entire process on your behalf.

  1. 1
    Land Acquisition & Soil Testing
    Before purchasing a plot, commission a soil test (KES 15,000–40,000). Black cotton soil requires expensive engineered foundations; murram and laterite soils are much cheaper to build on. Avoid sites with a high water table or near seasonal drainage channels. Verify title deed status and confirm the land is free of encumbrances.
  2. 2
    Architectural & Structural Design
    Engage a BORAQS-registered architect to prepare architectural drawings and a structural engineer for structural calculations. Architectural fees in Kenya are typically 1–3% of construction cost for residential projects. This is the most important investment in your project — good drawings prevent expensive changes during construction.
  3. 3
    Bill of Quantities (BOQ) Preparation
    A quantity surveyor (QS) prepares a detailed BOQ listing every material quantity and associated cost. The BOQ forms the basis for contractor tendering and prevents mid-project price disputes. QS fees are typically 1–3% of construction cost. Never break ground without a BOQ.
  4. 4
    County Planning Approval
    Submit architectural drawings to your county planning office for approval. County fees range from KES 50,000–300,000 depending on county and project size. The process typically takes 4–8 weeks. In Nairobi, submit through the Nairobi City County planning portal. NEMA approval is required where the project is near water bodies, ecologically sensitive areas, or exceeds certain thresholds.
  5. 5
    NCA Project Registration
    Register your project with the National Construction Authority (NCA). Required documents include approved architectural and structural drawings, NEMA certificate, BOQ summary, signed contract documents, contractor's NCA certificate, and professional practicing certificates for all consultants. An NCA compliance certificate is issued upon successful registration.
  6. 6
    Site Clearing & Setting Out
    Clear vegetation, remove topsoil, and stake the plot to mark the building footprint. Setting out by a licensed surveyor ensures the building is correctly positioned within required setbacks — violations can result in demolition orders. Typical setbacks in most counties: 3 m front, 1.5 m sides, 3 m rear.
  7. 7
    Excavation & Foundation
    Excavate foundation trenches to the depth specified by the structural engineer (typically 600–900 mm for a single-storey on good soil, deeper on black cotton). Place hardcore and compact. Install reinforcement bar (rebar) cages. Pour concrete foundation per structural specifications. Curing takes minimum 7 days before backfilling.
  8. 8
    Hardcore Filling, DPC & Ground Slab
    Fill the building footprint with compacted hardcore to the required level. Install a Damp Proof Course (DPC) membrane — this is critical for preventing rising damp, which destroys plaster and finishes over time. Pour the ground floor slab (minimum 150 mm reinforced concrete). This is not an area to cut costs.
  9. 9
    Walling & Structural Columns
    Erect walls using your chosen masonry unit — conventional stone, hollow blocks, solid blocks, or ISSB. Cast reinforced concrete columns at specified positions to tie the structure. For budget builds, ISSB (Interlocking Stabilised Soil Blocks) eliminate mortar entirely and reduce walling cost by 30–40% compared to conventional masonry.
  10. 10
    Lintel Beam & Ring Beam
    Cast a reinforced concrete lintel beam over all window and door openings (minimum 150 mm depth). At wall plate level, cast a continuous reinforced ring beam around the entire perimeter of the building. The ring beam ties the wall together and distributes roof loads — it is a structural necessity, not optional.
  11. 11
    Roofing
    Install timber roof structure (treated hardwood or CCA-treated pine). Fix roofing sheets — box profile is the most cost-effective, stone-coated steel tiles are more attractive and durable at a premium. Ensure adequate overhangs (minimum 600 mm) to protect walls and windows from rain. Install gutters and downpipes immediately.
  12. 12
    Electrical & Plumbing Rough-In
    Before plastering, install all electrical conduits, water supply pipes (CPVC or PPR), and drainage waste pipes in the walls and slab. This is the most important sequencing rule in construction — chasing plumbing and electrical through finished plaster is extremely expensive and damages finishes.
  13. 13
    Plastering & Screeding
    Plaster internal and external walls (minimum 15 mm cement-sand render). Screed floors to a smooth level finish ready for tiles or vinyl. Allow minimum 14-day curing before tiling. Rushing this stage leads to hollow plaster and tile debonding — the most common defect in Kenyan residential construction.
  14. 14
    Windows, Doors & Fittings Installation
    Install window frames (aluminium or hardwood) and door frames. Fix doors. Install electrical switch and socket boxes. Connect sanitary fittings — WC pans, basins, shower trays. Connect KPLC meter and water meter. This phase marks the start of the finishing sprint.
  15. 15
    Tiling, Painting & Final Finishes
    Tile floors and wet areas. Apply primer, undercoat, and two finish coats of paint — do not cut this to one coat, it will show within a year. Install kitchen cabinets, wardrobes, and bathroom accessories. Fit light fittings and switches. Clean thoroughly. Commission electrical and plumbing systems.
  16. 16
    Fencing, Driveway & Landscaping
    Erect perimeter wall or fence, install the gate, and pave the driveway. This phase is often deprioritised on budget builds — but an unfenced plot is vulnerable to theft of materials and unauthorised occupation. Budget KES 500,000–2M+ depending on plot perimeter and fence specification.
Section 04

The Bill of Quantities — Your Most Important Document

In Kenya's construction industry, project failures — stalled buildings, contractor disputes, and cost overruns — almost universally share one root cause: the absence of a proper Bill of Quantities (BOQ). A BOQ is a line-by-line itemisation of every material, quantity, labour rate, and associated cost for your entire project, prepared by a qualified quantity surveyor before construction begins.

Without a BOQ, contractors routinely submit artificially low quotes to win the job, then request budget top-ups at every phase. The builder gets trapped — too much is already spent to stop, so they keep paying. With a BOQ, you know the exact quantity of cement bags, steel bars, tiles, and timber your project requires before you sign a contract. Any contractor quoting significantly below the BOQ figure is signalling either inferior materials or a plan to request variations later.

What a Kenyan BOQ Covers

⚠ Common Mistake

Many Kenyans skip the BOQ to save the quantity surveyor's fee of KES 30,000–100,000. This is false economy. A QS fee on a KES 5M project is less than 2% — but the cost overruns caused by building without one routinely reach 30–50%. At Aalis Studios, every residential project includes BOQ preparation as standard.

Section 05

Materials & Current Prices — Kenya 2026

Material costs in Kenya have remained volatile since 2022, driven by global supply chain disruptions, exchange rate fluctuations against the US dollar, and rising fuel costs affecting transport. The following prices are indicative for Nairobi and major urban centres as of early 2026. Rural projects should add 5–15% for transport.

Material Unit 2026 Price Range Budget Note
Cement (32.5N) 50 kg bag KES 650–800 Buy in bulk — minimum 100 bags at a time
Steel Rebar (Y12) Tonne KES 95,000–110,000 Price fluctuates — lock in with supplier early
Hollow Blocks (150 mm) Per block KES 60–85 Verify block density — substandard blocks fail
Quarry Stone Per tonne KES 1,200–2,500 Varies significantly by proximity to quarry
ISSB Blocks Per block KES 30–55 Budget alternative — no mortar required
Roofing Sheets (box-profile) Per m² KES 550–900 Minimum 0.47 mm gauge for durability
Ceramic Floor Tiles Per m² KES 1,000–2,000 Standard 400×400 mm — good budget option
Porcelain Floor Tiles Per m² KES 2,500–6,000 Better durability; use on high-traffic areas
River Sand Per tonne KES 2,000–3,500 Buy from regulated suppliers only
Ballast (20 mm) Per tonne KES 1,800–3,000 Varies by region and season
Plumbing Pipes (PPR 20mm) Per 6 m length KES 450–700 PPR preferred over CPVC for hot water lines
Paint (undercoat) Per 20L tin KES 2,500–4,000 Never skip undercoat — it doubles finish life

Cost-Effective Alternative Building Technologies

Interlocking Stabilised Soil Blocks (ISSB) are compressed earth blocks that interlock without mortar, cutting walling costs by 30–40% compared to conventional masonry. They are increasingly popular across Kenya for budget builds and have been approved under Kenya's National Building Code when produced to standard.

Precast concrete panels offer rapid wall erection and can reduce walling time by 50–60%. They are produced off-site under controlled conditions, reducing on-site waste and theft of materials. The upfront panel cost is higher than blocks, but labour savings are significant.

EPS (Expanded Polystyrene) panel systems are gaining traction in peri-urban Kenya. They offer insulation, speed, and reasonable cost, but require specialised skilled labour and are not yet universally accepted by all county planning offices.

Section 06

Hidden Costs Most Budgets Miss

The most dangerous number in a Kenyan construction budget is the one that isn't there. Time and again, homebuilders set a KES 5M construction budget, complete the shell — and then discover they need another KES 2M just to make the house liveable. These are the costs that appear nowhere on a contractor's quote but are entirely unavoidable.

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Professional Fees
Architect (1–3% of construction cost), structural engineer (1–2%), quantity surveyor (1–3%), and NCA site supervisor (0.5–1%). On a KES 6M project, professional fees add KES 300,000–600,000. They are not optional — they are the reason your house stands up.
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County Approvals & Permits
County building permit fees: KES 50,000–300,000 depending on county and size. NEMA: KES 15,000–50,000. NCA registration: KES 10,000–30,000. Planning searches, caveats, and consent letters: KES 20,000–60,000 total. Budget 4–6% of construction cost for all statutory approvals.
Utility Connections
KPLC electricity connection: KES 70,000–150,000 depending on distance to transformer. Water connection: KES 30,000–80,000. Where no public sewer exists, a septic tank and soakaway system costs KES 80,000–250,000. Borehole: KES 300,000–700,000+ depending on depth.
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Perimeter Wall & Gate
Fencing a standard 50×100 plot: KES 500,000–2M+ depending on wall specification. A basic concrete block boundary wall and standard gate runs KES 600,000–900,000. An ornamental gate alone can cost KES 80,000–250,000. Many budgets omit this entirely — a serious omission.
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Site Preparation
Demolition of existing structures, tree removal, levelling, and compacting: KES 50,000–400,000 depending on site condition. Rocky sites requiring blasting can exceed KES 800,000. A detailed soil investigation before purchase is the only way to avoid this surprise.
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Contingency Fund
Industry standard is 10–15% for well-planned projects; 20–25% for first-time builders or projects in rural areas with uncertain supply chains. In 2026, given material cost volatility, Aalis Studios recommends a minimum 20% contingency on all residential projects.
Section 07

Phased Construction — Build as Your Finances Grow

Phased construction is one of the most powerful tools available to Kenyans building on a limited budget. Rather than waiting until you have the full construction cost in hand — which may never happen — you build the house in planned, structurally self-contained phases, completing each stage to a lockable condition before resuming when new funds are available.

The critical principle is that each phase must be structurally complete and weatherproof before you pause. Leaving a building at slab level exposed to the elements for years destroys reinforcement with rust, undermines the slab with water, and can render the structure irreparable. Plan your phases before you begin, and ensure each stopping point is a proper weatherproof shell.

Recommended Four-Phase Model

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Expert Advice

The most common financial trap in phased construction is completing Phase 1, moving in, and then living in an unfinished house for years without completing the services rough-in. Plastering over conduit-less walls is then a major and expensive remediation. If cash is tight, Phase 2 must be completed immediately after Phase 1 — before occupation.

Section 08

Approvals & Legal Requirements

Building without proper approvals in Kenya exposes you to three risks: a stop-work order from the county, a demolition order for non-compliance, and difficulty selling or mortgaging the property in future. All three are entirely avoidable with the correct pre-construction process.

Required Approvals for a Residential House in Kenya

⚠ Demolition Risk

In recent years, county governments across Kenya — Nairobi, Kiambu, Mombasa, and Nakuru — have intensified demolitions of unapproved structures. Unapproved buildings have no legal recourse against demolition orders, regardless of how much was invested in them. Do not build without approved plans.

Section 09

10 Expert Money-Saving Tips for Budget Builders in Kenya

These strategies have been validated across hundreds of residential projects. Applied correctly, they can reduce your total construction cost by 20–35% without sacrificing structural integrity or long-term habitability.

  1. 1
    Choose a flat, accessible plot
    The cheapest plot is not always the most economical. Rocky terrain, steep slopes, boggy ground, or remote locations can add KES 500,000–2M to foundation and site preparation costs. A flat plot with road access and proximity to utilities pays for itself quickly even if the headline price is higher.
  2. 2
    Get at least three contractor quotes against your BOQ
    Never accept a verbal estimate. Tender your project to at least three contractors, all pricing against the same BOQ prepared by your QS. This creates real price competition and makes it easy to spot inflated line items. The lowest quote is not always the right choice — evaluate experience, references, and NCA registration.
  3. 3
    Buy materials yourself for major items
    Cement, steel, and tiles can be purchased directly from manufacturers or authorised distributors at significant savings over contractor-supplied rates. Supervise deliveries to site yourself — material diversion is one of the most common sources of cost inflation in Kenyan construction.
  4. 4
    Build during the dry season
    Rainy season construction causes concrete cure delays, plaster damage, material spoilage, and worker downtime. In Kenya's two wet seasons (March–May and October–December), delays of 2–4 weeks per month are common. Building from January to early March or July to September maximises productivity and reduces material waste.
  5. 5
    Be present on site daily
    The most consistent predictor of budget performance on a Kenyan construction site is the frequency of the owner's visits. Daily presence — or a trusted representative — prevents material theft, catches substandard workmanship early, and maintains contractor diligence. "Don't build when you are away" is the most repeated advice from experienced Kenyan self-builders, and it is entirely correct.
  6. 6
    Use ISSB blocks for walling
    Interlocking Stabilised Soil Blocks (ISSB) eliminate mortar, reduce cement consumption in walling by up to 50%, and can be produced from on-site soil in some soil types. A skilled ISSB crew can lay 300–400 blocks per day versus 150–200 conventional blocks. For a three-bedroom bungalow, ISSB walling can save KES 150,000–400,000.
  7. 7
    Prioritise structure; defer cosmetic upgrades
    Invest in quality concrete mix ratios, properly cured slabs, and correct rebar spacing — these cannot be corrected after the fact. Flooring, paint quality, and kitchen fittings can be upgraded at any time. A well-built structure in basic finishes is infinitely superior to a poorly built structure in expensive tile.
  8. 8
    Build a two-storey rather than a large bungalow
    A 120 m² two-storey maisonette with 60 m² per floor shares a single foundation and single roof with a 60 m² bungalow — delivering double the space at roughly 60–70% of the cost of a 120 m² bungalow. The intermediate slab adds cost but the savings on foundation depth and roof area more than compensate.
  9. 9
    Insist on a written, itemised contract
    A verbal agreement is worth nothing when a dispute arises. Your contract must specify: scope of works, payment schedule tied to verified milestones (not calendar dates), materials specification, defects liability period (minimum 12 months), and dispute resolution mechanism. Aalis Studios provides standard NEC-compliant contract templates to our clients.
  10. 10
    Add 20% contingency — and do not touch it early
    Set aside a minimum 20% contingency fund before you begin. Keep it in a separate account. Do not access it to accelerate construction — it exists for genuine surprises: a rock band in the foundation, an unexpected price spike, a rainy-season delay, or a materials shortfall. Projects that consume their contingency in the first phase regularly stall indefinitely.
For Kenyans Abroad

Building in Kenya
from the Diaspora

Building a home in Kenya while living in the UK, USA, Canada, Australia, or the Middle East is entirely achievable — but it requires a different approach to supervision, payments, and materials procurement. Thousands of Kenyans in the diaspora successfully complete home builds every year with the right team and systems.

Remote Design & Review
Aalis Studios provides full architectural design services remotely. Review your plans, 3D renders, and material selections via video call from anywhere in the world.
Milestone-Based Payments
Never transfer lump sums to a contractor. We structure payments against verified construction milestones with photographic and video evidence provided before each drawdown.
Site Supervision
Our site supervisors conduct daily visits, maintain site diaries, and provide you with weekly progress reports and photographs. You know exactly what is happening on your site every week.
BOQ & Materials Procurement
We prepare a full BOQ, source materials from verified suppliers, and manage deliveries to site on your behalf — eliminating the single biggest vector for theft and fraud in diaspora builds.
FAQ

Frequently Asked Questions

Building a 3-bedroom house in Kenya in 2026 costs between KES 3.5 million and KES 9.5 million for the construction works, excluding land. Basic finish (KES 35,000–45,000/m²) for a 100 m² bungalow: KES 3.5M–4.5M. Mid-range finish (KES 50,000–65,000/m²): KES 5M–6.5M. High-end finish (KES 70,000–95,000/m²): KES 7M–9.5M. A realistic all-in budget including professional fees, approvals, utility connections, fencing, and a 20% contingency adds KES 1.5M–3M to these figures depending on location and specification.
The cheapest way to build a house in Kenya in 2026 is to combine several strategies: use a simple rectangular floor plan; build two storeys to share foundation and roof costs; use ISSB blocks (no mortar required, 30–40% savings on walling); buy materials directly from manufacturers; build during the dry season; phase the construction; and hire a BORAQS architect to prepare an accurate BOQ before signing any contract. Attempting to save money by skipping professional fees, approvals, or the BOQ almost always costs more in the long run.
Yes. Under Cap. 525 of the Laws of Kenya (Architects and Quantity Surveyors Act), all architectural drawings used for construction or county planning submission must be prepared and signed by a BORAQS-registered architect. Building without BORAQS-approved drawings is illegal and can result in a demolition order. It also invalidates your building permit and any future mortgage on the property. Aalis Studios is a BORAQS-registered, NCA-registered, and EDGE-certified practice.
A simple 3-bedroom bungalow in Kenya typically takes 8–14 months from ground-breaking to occupancy, assuming consistent funding and dry-season building. A maisonette takes 12–18 months. Pre-construction approvals add a further 2–4 months before ground-breaking. Phased builds can extend the overall timeline to 2–5 years depending on funding intervals. The most common cause of extended timelines is insufficient cash flow at key construction stages.
Black cotton soil (mbuga soil) is the most problematic foundation soil in Kenya. It expands when wet and contracts when dry, causing significant differential movement that cracks foundations, walls, and slabs over time. It requires a deeply engineered raft foundation or pile solution that can add KES 500,000–2M to foundation cost versus a standard strip foundation on murram or laterite. Commission a soil test (KES 15,000–40,000) before purchasing any plot, and obtain the test results from the seller if the land has been tested before.
Yes. Aalis Studios specialises in design-to-budget residential projects across Kenya — from simple 3-bedroom bungalows in Kiambu, Ruiru, and Thika to mid-range maisonettes in Nairobi suburbs, to coastal homes in Mombasa and Diani. Our services include architectural design, structural coordination, BOQ preparation, 3D visualisation, contractor selection, and site supervision. We also serve the diaspora with fully remote design, milestone-based payment management, and site supervision services. Contact us at +254 757 743 454 or via WhatsApp.