Glossary entry (derived from question below)
Arabic term or phrase:
(مجموعة) مج
English translation:
Block
Arabic term
United Kingdom
MA French and Arabic Translator
Native in: English 
Works in: Arabic to English, French to English
مج
| 5 +1 | Block |
Abd Alrahman Almidani
|
| 5 | مجموعة ملكية (Proprietary Group) |
Assem AlKhallouf
|
| 3 +1 | typo مع with |
Z-Translations Translator
|
Jun 25, 2021 15:57: Abd Alrahman Almidani Created KOG entry
Proposed translations
Sworn translator, MA in translation
Native in: Arabic (Variants: Syrian, Lebanese, Iraqi, UAE, Standard-Arabian (MSA), Palestinian, Sudanese, Egyptian, Jordanian, Saudi ) 
Works in: English to Arabic, Arabic to English
Block
You can find that it was abbreviated or used without abbreviation in the link below.
https://bit.ly/3xxAhD6
I looked the phrase مجموعة ملكية in Algerian websites and one of the results led me to an MA dissertation that mentioned it translated into French on P. 231.
https://bit.ly/2SOE5Bn
I found the phrase "ilots de propriete" is translated in a Kudoz question here as Block.
https://bit.ly/3wMeMyv
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Note added at 1 hr (2021-06-21 12:38:06 GMT)
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28 years of experience
Native in: Arabic (Variants: Egyptian, Jordanian, Yemeni, Saudi , UAE, Lebanese, Syrian, Libyan, Kuwaiti, Standard-Arabian (MSA), Palestinian, Iraqi, Sudanese)
Works in: English to Arabic, Arabic to English, Arabic, and 5 more.
typo مع with
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Note added at 21 mins (2021-06-21 11:35:17 GMT)
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Or it is an abbreviation of "مجموعة"
مجموعة = group
MA, PhD, NAATI, APTS.
Native in: Arabic (Variants: Egyptian, Kuwaiti, Saudi , Yemeni, Jordanian, Palestinian, UAE, Iraqi, Lebanese, Syrian, Standard-Arabian (MSA)) , English (Variants: British, Scottish, UK, US)
Works in: Arabic to English, English to Arabic, Arabic, and 1 more.
مجموعة ملكية (Proprietary Group)
ﺍﻟﻤﺴﺢ ﺍﻟﻌﻘﺎﺭﻱ ﻓﻲ ﺗﺜﺒﻴﺖ ﺍﻟﻤﻠﻜﻴﺔ ﺍﻟﻌﻘﺎﺭﻳﺔ
"و عليه فمجموعة عقارات تُشَكِّلْ مجموعة ملكية و مجموعة مجموعات الملكية تُشَكِّلْ مكان معلوم و مجموعة أماكن معلومة تُشَكِّلْ قسم و مجموعة أقسام تُشَكِّلْ محيط البلدية"
https://bu.umc.edu.dz/theses/droit/ABOZ2927.pdf
"شركة كيت وكيبت الكائن مقرها الاجتماعي في شارع كيت وكيت مجموعة ملكية رقم 233 قسم 03 بلدية."
https://www.translatorscafe.com/tcterms/en-US/question.aspx?...
ويقع مكتبها الرئيسي في حي بابا علي رقم 29 مج ملكية رقم 494 قسم 09، بئر توتة، الجزائر .
https://voyage.adresse-algerie.com/ar/guide/طاهر-أوتو/
ﺷﺎرع اﻟﻣﺟﻣﻊ اﻟﻣدرﺳﻲ ﺟرﺟرة ﻣﺣل رﻗم. 01 ... ﺗﺟﺯﺋﺔ ﺩﻭﺯﻱ ﻗﺳﻡ. 01. ﻣﺞ ﻣﻠﻛﻳﺔ. 44. ﺣﺻﺔ. 01. ﻣﺣﻝ ﺭﻗﻡ. 01. ﺑﺎﺏ ﺍﻟﺯﻭﺍﺭ. ﺍ ﺳﺩﻱ. ﻫﺎﻳﺑﺭ ﺗﻭﺯﻳﻊ. ﺍﻟﺟﺯﺍﺋﺭ.
https://www.commerce.gov.dz/media/avis/source/permanance-aid...
ﻣﻨﻄﻘﺔ اﻟﺼﻨﺎﻋﻴﺔ ﺣﺼﺔ 01 ﻣﺞ ﻣﻠﻜﻴﺔ 207 ﺻﻼﻣﻨﺪر. ﻣﻄﺎﺣﻦ ﻣﺴﺘﻐﺎنم
https://www.drcoran.dz/images/Bilan/Fr/Permanence/aidelkebir...
"طريق عيسى بن موسى قسم 46 مج ملكية رقم 102 محل رقم 20 - بوفاريك."
"شارع ابن خلدون قسم 49 مج ملكية رقم 33 - بوفاريك"
https://artisanat-blida.blogspot.com/p/blog-page_83.html
Discussion
Is it Algerian?