Joseph Portelli
The man who built Gozo: 592 planning applications from one developer

Summary
Joseph Portelli has filed 592 planning applications in Malta's planning system — more than many entire localities. With 422 approvals (71.3%), 73 refusals (12.3%), and 76 applications on ODZ (Outside Development Zone) land, Portelli's footprint spans virtually every town in Gozo and increasingly reaches into Malta. The database reveals a developer who began with garages and mini-markets in Nadur in the late 1990s and scaled to 68-apartment blocks, boutique hotels, and mercury-rise mixed-use towers in St Julian's by the 2020s. His most controversial projects — the Qala apartment complex, ODZ reservoir applications, and the St Julian's Mercury House tower — demonstrate a systematic approach to development at a scale that reshapes entire communities.
Key findings
592 applications across Malta and Gozo
| Locality | Applications | ODZ |
|---|---|---|
| Malta/Other | 256 | 13 |
| Nadur | 92 | 13 |
| Qala | 48 | 10 |
| Ghajnsielem | 34 | 7 |
| Xagħra | 32 | 5 |
| Żebbuġ (Gozo) | 28 | 6 |
| Xewkija | 25 | 8 |
| Victoria/Rabat Gozo | 24 | 3 |
| Munxar | 14 | 1 |
| Kercem | 10 | 2 |
| Sannat | 9 | 1 |
| Marsalforn | 8 | 2 |
| Għarb | 8 | 1 |
| San Lawrenz | 4 | 4 |
592 total applications, with the bulk concentrated in Gozo but increasingly spreading to Malta. 76 ODZ applications — roughly 13% — is a significant proportion given ODZ applications require more scrutiny.
From garages to towers: the growth arc
Late 1990s: Mini-markets and car hire in Nadur (PA/00464/98, PA/01580/98, PA/05369/98). Small-scale commercial ventures.
Early 2000s: Flats and garages in Qala and Nadur (PA/05045/01, PA/03186/02, PA/03185/02). First apartment blocks.
2010s: Scaling up dramatically:
- PA/04183/15: 13 apartments + 2 penthouses in Msida
- PA/01692/16: 21 apartments in Lija
- PA/01264/17: 75 garages + 34 apartments at Xlendi, Munxar
- PA/06955/17: Mercury House, San Ġiljan — "iconic building concept" with residential and tourism uses
- PA/01139/17: Hotel + 50 studio apartments at Triq Santu Wistin, San Ġiljan (Tiffany site)
2020s: Full-scale mega-developer:
- PA/01892/19: Mercury House — entertainment arena, 9-storey residential block
- PA/06923/19: Phase two at Tiffany: hotel + 52 studio apartments
- PA/05530/22: Mercury House expansion — adding floor to hotel tower (130 to 140 keys), increasing Mercury Suites residential tower
- PA/07498/23: 68 apartments + 43 garages at Triq Hector Dalli, Żejtun
- PA/07264/23: 19 apartments + 13 garages in Paola
- PA/00505/26: Mixed-use development in Birkirkara — garages, showroom, cafeteria, apartments
The ODZ pressure
Portelli has 76 ODZ applications across the database. In Qala alone:
- PA/00857/22: Underground reservoir and pump room (ODZ) — Approved (3-0 vote)
- PA/01400/23: Two stables and ancillary facilities (ODZ) — Approved
- PA/01511/20: Pigeon loft and related amenities (ODZ) — Approved
- PA/02542/18: Apartment at second floor (ODZ) — Refused
- PA/02521/20: Addition of 2 apartments at Surrey Hills (ODZ) — Still pending
The reservoir application (PA/00857/22) echoes Discovery 36 ("The ODZ Foot in the Door") — agricultural infrastructure applications that establish a presence on rural land.
The Mercury House saga (San Ġiljan)
Portelli's most ambitious Malta project spans multiple applications at a single St Julian's site:
- PA/06955/17: Original "iconic building concept" with residential and tourism
- PA/01892/19: Demolish Go-Exchange building, add entertainment arena, 9-storey residential block
- PA/05530/22: Add floor to hotel tower, increase residential suites
- PA/04486/25: Sanction internal heights of apartment 426
The Mercury House project shows Portelli operating at a completely different scale from his Gozo origins — a St Julian's tower complex rivalling established developers like MIDI and DB Group.
One architect, one developer
A striking pattern across the early applications: virtually all of Portelli's Gozo work from the 1990s–2000s was done by Perit Mr. Emanuel Vella — the same architect who handled hundreds of cases. Later applications diversify to other architects as the projects grow in scale and ambition.
Key statistics
| Metric | Value |
|---|---|
| Total applications | 592 |
| Approved | 422 (71.3%) |
| Refused | 73 (12.3%) |
| ODZ applications | 76 (12.8%) |
| Localities covered | 14+ |
| Largest single project | 68 apartments + 43 garages (Żejtun) |
Notable cases
PA/07498/23 — Triq Hector Dalli, Zejtun. Portelli's largest single development: demolition of an entire row of garages and construction of a new block with 43 basement garages, 5 ground-floor garages, 2 shops, and 68 apartments including penthouses with pools. Approved 3-0 by the WDS commission in September 2024. A single application that would reshape an entire street.
PA/05530/22 — Mercury House, San Giljan. The most ambitious amendment in the Mercury saga: adding a floor to the hotel tower (130 to 140 keys), increasing the residential tower height by 900mm, adding a swimming pool at roof level, and converting floor space into an underground entertainment arena with a go-kart track. The resulting building reaches 121.66m above street level. Approved 3-0 — no votes against from a developer who started with mini-markets in Nadur.
PA/05539/23 — Triq Selmun, Mellieha. An ODZ application to demolish an existing property and construct three garages and four apartments on protected land. Approved 3-0 by the ODZ commission, chaired by Martin Camilleri, at 10:43 AM — a case that took minutes to decide despite being full residential development outside the development zone.
Why this matters
Joseph Portelli is not just a prolific developer — he's a one-man development machine whose 592 applications have physically reshaped Gozo and increasingly Malta. The database shows a three-decade arc from corner-shop conversions to hotel towers, from Nadur garages to St Julian's entertainment complexes. His ODZ applications in Qala — reservoirs, stables, pigeon lofts — follow the exact pattern documented in Discovery 28: agricultural infrastructure as the first step toward larger development. And his Mercury House project in St Julian's signals that Gozo's most prolific developer has arrived on Malta's most competitive development frontier. In a country of 500,000 people, one individual's 592 planning applications represent a remarkable concentration of development activity.
International context
In Ireland, An Bord Pleanala overturns roughly 33% of local authority refusals on appeal, providing a meaningful check on developer persistence. Malta's system has no equivalent brake: Portelli's 73 refusals (12.3%) are simply absorbed into a portfolio where 422 approvals (71.3%) deliver the outcome. The sheer volume of applications — 592 from one developer — would be extraordinary in any jurisdiction, but in a country the size of Malta, it represents a concentration of development power with few international parallels.
What this means going forward
The Portelli portfolio raises two systemic questions. First, whether Malta's planning system can meaningfully assess cumulative impact when a single applicant is reshaping entire localities. Each of Portelli's 592 applications is assessed individually, but the collective effect on Gozo — 92 applications in Nadur alone, 48 in Qala, 34 in Ghajnsielem — is a transformation that no individual case officer is tasked with evaluating. Second, whether the transition from Gozo garages to Malta mega-projects represents a natural business evolution or a planning system that has enabled one developer to scale without proportionate scrutiny.
The Mercury House project is the test case. At 121.66m, it is one of Malta's tallest buildings, approved through a sequence of amendments that expanded the hotel, added an entertainment arena, and increased the residential tower. Each amendment was assessed against the previous approval — not against the original 2017 vision. The question for the 2020s is whether any developer, regardless of track record or scale, can continue to operate at this volume without the planning system treating the portfolio itself as a factor in decision-making.
Media sources
- "Mercury skyscraper grows to 33 floors as planning board approves three more storeys" — MaltaToday, 17 December 2020. Confirms the Mercury House amendment pattern: the tower grew from 31 to 33 floors, apartments from 275 to 429 units, with a 19-storey hotel added. Approved 9-2.
- "Gozo developer Joseph Portelli renounces controversial Qala ruins permit following outrage" — MaltaToday, 2 November 2019. Confirms Portelli's ODZ pressure in Qala: a permit to convert a countryside ruin into a villa was approved despite the directorate recommending refusal, prompting Portelli to renounce it only after public outrage.
- "Portelli files second application to expand Gozo flats complex, months after getting original permit" — The Malta Independent, 6 September 2022. Corroborates the amendment escalation pattern: Portelli filed two expansions within months of the original 103-unit approval, adding 35 more residential units, 50 garages, and rooftop pools.
- "Developer Joseph Portelli admits illegal Qala works" — Times of Malta, 25 October 2021. Portelli admitted illegal excavation on ODZ land in Qala while building a 164-apartment complex, claiming he expected to get a permit for a swimming pool. Confirms the scale of his Gozo operations and the pattern of building ahead of permission.
- "Gozo developer Portelli renounces Qala permit following outrage" — Times of Malta, 2 November 2019. Portelli renounced a permit to convert a countryside room into a villa after widespread outrage, with Qala's Labour-led council opposing the project -- corroborating the ODZ pressure pattern in his portfolio.
- "Demonstrators to Abela: Stop PA's backdoor approval of illegal developments" — Times of Malta, 31 August 2024. NGOs named Portelli as having three illegal construction projects with pending sanctioning applications, all built when courts revoked their planning permits -- corroborating his pattern of building first and seeking permission later.