Rode puts national industrial vacancy at about 3.8%. In Cape Town it is 3.3%. In the most sought-after logistics precincts, A-grade vacancy is reported below 1%.

Prime industrial rentals grew 8.1% nationally on 500 m² space in the fourth quarter of 2025 and the sector has carried that into 2026. Stronger nodes are letting at roughly R85 to R95 per square metre. Some prime Cape Town logistics corridors are reported near 15% year on year.

Black Friday is 27 November, which is 12 weeks out. Peak outbound in most South African DCs runs at 3 to 4 times normal volume.

Those two facts do not fit together, and the property market is not going to resolve it for you in 12 weeks.

Why there is nothing to lease

The vacancy number is low because almost nothing new has been built, not because demand softened.

Development has been limited for several years while construction costs, funding costs and pre-commitment requirements all moved the wrong way. GlobalData expects South African construction to grow 2.8% in real terms in 2026, which is recovery rather than a building boom. Industrial was the strongest of the three major non-residential sectors entering 2026, and it got there on scarcity.

Cape Town is the clearest case. The city has genuine land and infrastructure limits on where industrial development can go, which is a large part of why rental growth there has held up while other sectors have not.

The timing arithmetic is the part worth internalising. A new distribution facility is 12 to 18 months from decision to occupation on a good run, and that assumes land, services, funding and a signed pre-let. Anything you decide to build this week is a Black Friday 2027 asset.

Leasing existing space is faster and needs the space to exist. At 3.8% national vacancy, and under 1% for A-grade in the nodes that actually work for distribution, the search is the constraint before the rent is.

What is left when square metres are not available

Three things inside the building, in the order they usually pay.

Cube per storage position. Most South African DCs are storing less in each location than the location can hold. Honeycombing, static ABC slotting set years ago and never revisited, beam levels pitched for a product mix that has since changed. This is stored air, and it is paid for at R85 to R95 a square metre whether it holds stock or not.

Cube per outbound carton and pallet. Every cubic metre of air in an outbound consignment occupies a dock door, a staging lane and a vehicle. At peak those three are the bottleneck long before the racking is.

Time. Extra shifts and better wave design buy real capacity. They also need people, and South Africa is short more than 59,000 skilled logistics workers. Labour is the scarcer of the two constraints in November, which is why it is the wrong lever to reach for first.

The arithmetic that decides whether this is worth your attention

Optioryx publishes 15% higher storage utilisation and 20% lower labour cost for its Pulse Slot module, which does slotting beyond static ABC. Pick is published at 20% higher picking productivity and 40% shorter walking distances. Pack, the 3D Cartonization module, is published at 15% lower shipping costs, 30% less carton used and 35% less air shipped.

Treat those as direction, not as a promise for your building.

Here is how to size it for yourself. Take a 10,000 pallet position DC. A 15% utilisation gain is the equivalent of 1,500 positions you do not have to find somewhere else. Convert that at your own square metres per position, including aisle share, and your own rent. At 1.5 m² a position and R90 a square metre, 1,500 positions is roughly R200,000 a month.

Set that against what you are currently paying for overflow: external 3PL storage, containers in the yard, a short-term lease taken at peak rates because November arrived. Most operations can find that number in an afternoon, and most have never put it next to the utilisation number.

If the gap is 5%, leave it alone and spend your attention elsewhere. If it is 25%, you are renting space twice.

How this fits alongside your existing WMS

Pulse connects on top of your existing WMS through an API. Optioryx states plainly that it is not a WMS and does not replace one. Integration runs three ways: manual file import and export, flat files over CSV or SFTP, or a direct API into your WMS, TMS or ERP.

That matters for the 12-week timeline. A slotting change does not require you to reopen a WMS contract, retrain the floor on a new system, or push a capital request through an April fiscal cycle. The incumbent system keeps doing what it does. What changes is how the put-away, slotting and box selection decisions get made inside it.

Optioryx reports 65 or more warehouses live across 28 countries and holds ISO 27001 certification.

Three things worth doing in September

1. Measure occupied against usable, not occupied against total. Pull your location master and your current stock positions. Compare the cube actually stored in each occupied location against the cube that location can hold. The gap between those two numbers is the capacity you already own. Honeycombing in a pallet-in pallet-out operation routinely runs 15 to 30%.

2. Price your overflow honestly. Add up external storage, yard containers, and any short-term space taken in the last two peaks. That is the annual cost of the utilisation gap, and it is the number that makes the case internally.

3. Re-slot against this year's velocity, not last year's. ABC classes set before the last two peaks are describing a product mix that has moved. Fast movers sitting in the back of the building cost you walking distance on every order for the whole of November and December.

The timing

Twelve weeks is enough to re-slot a fast-mover zone and change box selection rules. It is not enough to lease, fit out and commission new space, and it is nowhere near enough to build.

The property market has taken one lever off the table for this peak. The levers left are the ones inside your own four walls, and they are software and process decisions rather than capital ones.

Measure the utilisation gap first. The size of that number tells you whether this is a project or a footnote.

Sources

Vacancy and rental figures are market survey data and vary by node and by grade. Check your own node before acting on a national average.