SM3 · 3 steps · ~14 min · Vintage: AR2008 dev pipeline

Don't value the finished building. Value the margin you create.

A development under way is already partly in your standing NOI. Credit it with the full completed value and you double-count. The analyst's move is to add only the incremental margin the remaining spend creates — discounted hard for the years and the construction risk before it earns.

1 Step 1 of 3 · The margin principleRead · ~3 min.

The trap: counting the same building twice.

Alstria's two identified projects — the Ohnsorg Theater and the Alte Post JV — are existing buildings being redeveloped. Their current income already sits inside the €89m stabilised NOI you capitalised in SM2. So if you now add their full completed value on top, you've counted the bricks twice. The fix: add only the development margin — the value the remaining build spend creates, over and above what's already in the standing portfolio.

Identified pipelineOhnsorg TheaterAlte Post (JV)
Area (m²)3,2636,600
Stabilised NOI on completion (€m)5.582.05
Exit yield5.43%5.43%
Ownership100%50% JV
The method (model "Development Summary"): rather than value each finished building and try to back out what's already counted, the model works forward from cost still to spend: the remaining €62m of build cost generates a future GAV, and the gap between the two — discounted to today and net of fees — is the margin. Clean, and it can't double-count, because it never touches the value already in standing NOI.
2 Step 2 of 3 · Build the marginInteractive · fill the two running totals, then Check.
Development margin of €21.7m locked for the NAV bridge.
Continue to Step 3

Spend cost, create value, discount the gap.

All figures are present values, discounting the staged build at a 12% development rate (well above the standing-asset cap rate — construction carries more risk) over an average ~2 years to completion. Compute the development NAV, then take off the capitalised management fee to get the contribution.

Future GAV created by remaining spend (PV @ 12%)77.2
Less: future build cost (PV @ 12%)−53.8
= Development NAV (€m)
Less: capitalised management expense (PV)−1.7
= Contribution to NAV (€m)
Development NAV = GAV created − cost. Contribution = development NAV − capitalised fee.
≈ €21.7m — that's it. A €62m spend that creates ~€77m of value (PV) throws off roughly a €23m margin, and ~€1.7m of fees leaves €21.7m for the NAV. Versus the ~€78m you'd get by naïvely capitalising both finished buildings, the discipline of the margin method strips out the double-count and the optimism an appraiser tends to wave through.
3 Step 3 of 3 · Knowledge check3 questions. Then SM3 is complete.
SM3 complete. €21.7m development margin carries into SM5.
See locked outputs

Three traps in development valuation.

GAV created (PV)
€77.2m
remaining spend
Development NAV
€23.4m
GAV − cost
Developments → SM5
finish Step 3 to lock