Know what it costs
before you break ground.
Kenya's construction estimator. See what your building costs at your county's rates, watch the figure move as you change it, and turn it into a Bill of Quantities you can edit line by line.
See what it costs — free Create an account| Excavate foundation trenches | 45,000 |
| Machine-cut stone walling | 386,400 |
| Cement 50kg (KES 780/bag) | 156,000 |
| Fundi & labour | 238,500 |
| GRAND TOTAL (incl. OH&P) | KES 1,074,285 |
What brings you here?
Can I afford this — and what will it look like?
Set the bedrooms, bathrooms, finish and county. See the cost and a 3D view of the house update together as you change your mind. Nothing is saved, nothing is charged, no account.
Open the cost explorerA bill of quantities today, not next week
Describe the job or upload the plans. You get a full priced BOQ — sections, quantities, rates — that you then edit line by line, or change by telling the assistant what you want different. Priced against your own rate library where you have one.
Start a bill of quantitiesPlans a county office will accept
Everything here is preliminary — for budgeting, marked draft, and not for construction. Approvals need a registered professional. What you get here is the concept and its numbers, worked out far enough that a professional is pricing your design rather than starting from a blank sheet.
Draft a concept to take with youWhat you can build
See every design →
Concept renders from JengaCost's own 3D model of each design, not architectural visualisations.
How it works
Describe the job
In plain words — or upload the plans and let the app take them off. Add your client, location and markups if it's going out as a bill.
Check the draft, change what's wrong
Every quantity and rate is editable, and nothing is saved until you accept it. Or say what you want different — "use precast slabs", "drop the ceiling" — and see the change before it lands.
Issue it under your own name
Totals roll up to the shilling. Export CSV, a print-ready bill or full bid documents — prepared by you, with your company on it.
Kenyan rate library
Indicative material, labour and plant baselines you can copy and localise to your county. Your own rates stay yours.
Money math you can trust
Section subtotals, overheads, profit and contingency — computed in one audited place, to the shilling. Never floats, never surprises.
Built for the diaspora too
Building from abroad? A priced BOQ is your "what the money should build" contract with everyone on site.
Simple pricing, paid by M-Pesa
Free
- 2 full projects
- Complete rate library
- CSV & print exports
Single BOQ
- One extra project
- No subscription
- Credit never expires
Pro
- Unlimited projects
- Bid documents & video ads
- Priority support
Building costs by county
Compare all 47 counties →What a house costs to build in each of Kenya's 47 counties, with the climate, ground and materials that change it — and every design in the catalogue priced at that county's rates.
Coast
Nairobi
Rift Valley
Questions builders ask us
Roughly KES 26,000–36,000/m² all-in for a standard bungalow in 2026, varying by county and finish. See the full breakdown — or price your exact design in a minute.
Your first two projects are free — AI design, floor plan and priced BOQ included. Pro is KES 1,500/month via M-Pesa; a one-off BOQ is KES 500.
It produces a preliminary concept — plan, schedules, programme, costs — for budgeting. Approvals need a registered professional, and we connect you to one for the full drawings.
A dated, range-carrying rate library, county-adjusted, with medians from real user BOQs. Every figure is dated on the public price index.
Find out what it costs.
Free, no account, about a minute.
Open the cost explorer Costs in my county