01
Read the screen
Light greyYou type here
WhiteResults
BlackMain result
RedMissing input or a broken limit: fix it
02
Five steps
1
Plot
- City, block, katha, road (ft)
2
Building
- Units / floor, floors, basements
3
Cost
- Type, land price, quality
- Add-on % optional
4
Calculate
- See FAR, floors, units, cost
5
Compare & report
- Up to 3 options, A4 PDF
Inputs marked * are required. If one is missing, Calculate turns it red and names it. Change any input and tap Calculate again to update.
03
Common situations
DHAKA · SMALL PLOT
How FAR is worked out
Dhanmondi, 5 katha, 30 ft road.
Road FAR3.524
+
Size bonus0.20
=
FAR3.724
Wider road or bigger plot = more FAR.
MAX UNITS IS RED
Too many flats for the plot
Same plot allows 10 units. 8 floors × 2 units = 16.
Max Units10 · over by 6
Fix: fewer units on some floors (next card) or fewer floors.
DIFFERENT FLOORS
Some floors with fewer or more units
Answer Yes, then enter how many floors and how many units on them.
2 units × 2 fl4
+
1 unit × 6 fl6
=
Total10
Now within the limit. Floors (Total) stays 8.
30 KATHA OR MORE
Block FAR applies
Bashundhara, 32 katha, 40 ft road.
Non-block4.10
→
Block FAR5.458
More FAR and units, but ground coverage drops to 40%, so more floors.
JOINT VENTURE
Landowner and developer shares
Enter LO share (%) and LO units. Developer units = total units − LO units.
LO 4 units
Developer 6 units
Check the average unit size of each side. Similar sizes = fair split.
CHITTAGONG
Road too narrow for the plot
12 katha needs a 30 ft road. On a 20 ft road, FAR steps down.
20 ft4.25
32 ft4.60
60 ft6.00
"Road-Limited" on screen means the road, not the plot size, sets the FAR.