Public case study | English edition | 11 September 2026

Krulli 4d, Tallinn.
From factory workshop
to event venue.

A real adaptive-reuse project, reviewed through public planning information and construction announcements.

Question: What supports the conversion, and what would still need checking before an acquisition?

PLUcide assessment: a documented conversion project, with transaction-level checks outstanding.
The quarter's plan is recorded as adopted. The contractor describes the event-centre conversion. This is a public desktop case study, not an offer for sale, a commissioned client report or a verified acquisition recommendation.
01 / Property and scope

Keep the building and the wider plan separate.

Krulli 4d

Merko identifies this address as the former industrial workshop being renovated for events. The stated project size is approximately 2,100 m²; this is a contractor-reported building figure, not a measured plot area. [S3]

DP040380

The Tallinn register identifies the Krulli factory-quarter detailed plan, with status Kehtestatud (adopted), and lists decision 626 dated 17 June 2025. [S1]

10.25 hectares

The municipality gives this area for the whole planning perimeter. It must not be treated as the area of Krulli 4d. [S2]

The exact current cadastral unit, building-register identifier and allocation of Krulli 4d to a plan plot have not been independently reconciled in this review.

02 / Evidence trail

Three milestones. Three different meanings.

3 December 2024

The register lists decision 1087 for acceptance of the detailed plan. This is a separate step from final adoption. [S1]

17 June 2025

Decision 626 records adoption. Tallinn describes a mixed-use redevelopment including reconstruction and extension of heritage-listed buildings. [S1] [S2]

May-June 2026

Merko announces event-centre works, then reports that first-phase building permits, including the Events Centre, have been issued. This permit statement is from the contractor; the permit itself has not been inspected. [S3] [S4]

03 / What the sources establish

A conversion pathway exists. Its conditions still matter.

QuestionEvidenceImplication for an investor
Is this solely an industrial-use area?Tallinn describes reorganising the former production plots into a mix of commercial, residential, public, transport and production plots. [S2]Our inference: investigate the specific plot allocation; the mixed-use label alone does not establish the use allowed in every building.
Can existing fabric be retained?The announced design retains the historical structure, with two above-ground levels and a basement. [S3]Our inference: a refurbishment budget should be based on the approved design and condition surveys, not a generic new-build rate.
Are access and utilities relevant?The city says the plan covers access, parking, greenery and networks. [S2]Our inference: examine how the individual building connects to the wider development and who must deliver each prerequisite.
Is permission verified for this review?Merko reports permits for the first phase. No permit number, approved drawings or conditions were retrieved here. [S4]Obtain the permit record and annexes before relying on its scope, timing or conditions.
04 / Delivery and dependencies

A building date is not the whole programme.

Merko's May 2026 announcement targets September 2027 for the event centre and summer 2028 for the infrastructure. These are published targets, not guarantees or independently verified progress dates. [S3]

Question to resolve: which access routes, utility connections and operating arrangements must be ready before the venue can open? The difference between the announced dates warrants a phased-delivery explanation; it does not prove that opening will be delayed.
05 / Acquisition checks still open

What we would request for a live deal.

Identity and title

Current cadastral reference, boundaries, title extract and rights of access. Reconcile the present address with the adopted plan plots.

Permission and heritage

Building-register record, permit decision, approved drawings and applicable heritage conditions. Confirm the intended operation fits the approved project.

Technical and financial evidence

Structural and environmental surveys, fire and acoustic design, utility agreements, works budget and programme. Industrial history is a reason to investigate; it is not evidence of contamination.

No flood, soil, contamination or structural clearance is given. No buildable-area calculation, resale valuation, project margin or sunlight simulation has been performed.

06 / Source register

Follow each finding back to its origin.

  1. S1 | Tallinn Planning Register, DP040380. Official register, viewed 11 September 2026. General-data screen: plan name, status and legal acts. Open the current register entry. The old municipal deep link returned a 404. A partial retrieval-error notice appeared in the new interface; only the fields visibly loaded are used here. Plan drawings and explanatory memorandum have not been reviewed.
  2. S2 | City of Tallinn, 17 June 2025. Municipal announcement of the quarter's plan adoption. Read the English announcement. Read in the browser on 11 September 2026. This summary does not substitute for the adopted plan and its annexes.
  3. S3 | Merko Group, 15 May 2026. Contractor announcement: event-centre address, design description and target dates. Read the construction announcement. Commercial project information, not a municipal permit.
  4. S4 | Merko, 1 June 2026. Contractor update reporting first-phase permits. Read the project update. The separate Kasvuhoone project is not treated as the Krulli 4d building.

Prepared independently by PRESTADEV / PLUcide from public sources. No affiliation with the owner, developer, architect, contractor or municipality is implied. Findings are limited to the documents and visible register fields identified above.

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Philippe Mouniama | PRESTADEV, publisher of PLUcide
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