The catalogue is genuinely tempting. Thousands of finished houses, prices from KES 5,000, photographs that look like the life you are working towards. There is nothing wrong with wanting the shortcut. The problem is structural: a catalogue plan was drawn once, for no plot in particular, and is sold to everyone. A house plan is a set of site-specific answers — buy it off the shelf and every answer is a guess.
A plan is an answer to questions only your plot can ask
Where is north? Where are the road and the gate? How does the land fall? What do your county’s setbacks and coverage rules allow? Where do water and sewer enter — or where must the septic sit? Who lives in the house on an ordinary Tuesday, and who arrives in December? A good plan is those answers, drawn. A catalogue plan answers them for a hypothetical plot: flat, generous, facing nowhere. Yours is none of those things.
What actually goes wrong on site
- Orientation is luck. The drawing decided where the kitchen faces before it knew which way your plot points. So the master bedroom takes the western sun, the verandah faces the boundary wall, and the morning light lands in the corridor.
- The plot disagrees. The drawing assumed a flat 15 × 30. Yours tapers, or falls a metre corner to corner. The fundi “adjusts” at the foundation trench, and rooms shrink where nobody chose them to.
- Setbacks force a redraw. Counties measure from your boundaries, not the seller’s. A plan a metre too wide means shaving rooms on site or building a violation you discover at approval.
- Nobody is the author. When a real question comes up mid-build — can this wall move, what carries the tank — there is no one to call. So the change is made in block and mortar, unrecorded.
- The stamp problem. A county wants an architect of record. The PDF you bought has no professional behind it, and a registered architect will rightly insist on reviewing — often redrawing — before staking their registration on drawings they did not produce.
The adaptation tax
The usual rescue is paying a draftsperson to “adjust” the bought plan to the plot. Without the original CAD file, adjusting means tracing. With it, it still means re-dimensioning, re-checking, and reconciling every sheet the change touches. You pay for the plan, then for the tracing, then for each change — and finish with a set that has passed through three pairs of hands and belongs to none of them. The total routinely overtakes what designing from a brief would have cost, and takes longer.
When a ready plan is genuinely fine
Honesty cuts both ways. If your plot is flat and generous, rectangular and unambiguous; if the orientation happens to work; if you truly want no changes; and if the seller supplies dimensioned working drawings plus a registered architect willing to review and stamp them — then a catalogue plan is a fair purchase. That is a longer list of ifs than most buyers expect to be holding.
Starting from your own brief is no longer the expensive option
This is what has changed. A brief is a conversation — bedrooms, plot dimensions, orientation, gate, budget — and the plan that comes back is drawn to those facts and checked against Kenyan residential code rules, with three revisions free while you shape it. Nine photoreal views show you the actual house; a bill of quantities prices it; packages start at KES 3,500, and a KES 29,500 stamped set names an architect of record when you are ready to build. The catalogue’s price, without the catalogue’s compromise.
A bought plan asks your land and your family to fit someone else’s drawing. Ordering it the right way round costs about the same — and builds the house you actually envision, on the plot you actually own.