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Series

The Viability Series

Data-driven investigation into why Ireland's housing delivery system is structurally broken

9 articles
Ireland Has a Viability Ceiling, Not a Planning Bottleneck
Part 1

Ireland Has a Viability Ceiling, Not a Planning Bottleneck

218 residential extension of duration applications in Q1 2026 — above the Covid peak. The acceleration started months earlier than anyone noticed.

Archa Intelligence·
The Silent Lapse: For Every Developer Who Asks for More Time, Twenty Walk Away
Part 2

The Silent Lapse: For Every Developer Who Asks for More Time, Twenty Walk Away

218 extension of duration applications made headlines. At most one in twenty developers with expiring permissions even files one.

Archa Intelligence·
The RZLT Paradox: A Tax on Small Developers That Accelerates Land Consolidation
Part 3

The RZLT Paradox: A Tax on Small Developers That Accelerates Land Consolidation

85% of recycled RZLT sites change hands. Small developers sell under pressure, institutional buyers acquire at discount. The tax designed to unlock land is concentrating it.

Archa Intelligence·
Permitted but Caught Out: Ireland's Rule Changes Are Rewriting In-Flight Permissions
Part 4

Permitted but Caught Out: Ireland's Rule Changes Are Rewriting In-Flight Permissions

Nine policy changes have rewritten Irish planning permissions mid-flight since 2019. A 2022 permission is now a different product from the one granted. Full catalogue.

Archa Intelligence·
Five Systems, No Feedback: Why Ireland's Planning Complexity Advantages Scale
Part 5

Five Systems, No Feedback: Why Ireland's Planning Complexity Advantages Scale

One-grant developers commence at 45%, six-grant at 58%. Five Irish state planning systems operate on the same land without referencing each other. The gap selects for scale.

Archa Intelligence·
The Optionality Gap: The Options Trader and the Committed Builder
Part 6

The Optionality Gap: The Options Trader and the Committed Builder

216 portfolio developers hold 581 residential permissions and build where friction is lowest. 1,325 one-site developers hold one permission each and push through regardless. The same builder who delivers 87% in Westmeath delivers 35% in DLR. The difference is not capability. It is optionality.

Archa Intelligence·
The Eye of the Needle: What Ireland Can Still Build
Part 7

The Eye of the Needle: What Ireland Can Still Build

Mid-size schemes of 61-100 units commence at 68-76% across houses, apartments and mixed alike. One-off houses: 4,000 per year at 70%. Everything in between and above is where the system breaks. The viable band hasn't changed since 2017. The penalty for missing it has.

Archa Intelligence·
The Scale Trap: Too Small to Finance, Too Big to Survive
Part 8

The Scale Trap: Too Small to Finance, Too Big to Survive

Roughly 400 residential developers receive scheme permissions each year. Three-quarters are first-time grantees averaging 43 units. The viable band starts at 61. There is no financing bridge between them. Above 100 units, even Cairn Homes and the LDA hold uncommenced 2021 SHD grants. Ireland's housing market is boxed in.

Archa Intelligence·
Where Ireland Actually Builds: The Geography of What Gets Through
Part 9

Where Ireland Actually Builds: The Geography of What Gets Through

Towns get twice the scheme housing per capita of cities. Schemes within 500m of transport commence at 55%; schemes 1-2km away at 68%. The planning system allocates housing roughly where it's needed — then can't activate it where demand is tightest. The constraint map is the viability map.

Archa Intelligence·
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