| SIRET | Nom | Nombre copropriétés |
| 41133158000133 | FONCIA ARMOR | 778 |
| 79448822100019 | KEREDES GESTION IMMOBILIERE | 566 |
| 83973400100028 | INOVA | 462 |
| 50487903200036 | DOMEOS | 397 |
| 39404141200039 | CABINET LECOMTE SYNDIC | 319 |
| 32164132600046 | HABITER 35 | 294 |
| 45333989700036 | MAESTRO SYNDIC | 290 |
| 38891304800038 | LEFEUVRE SYNDIC DE COPROPRIETE | 259 |
| 88793886800023 | COME IMMOBILIER | 114 |
| 41399616600018 | TYCOP | 99 |
| 30321722800012 | CABINET MARTIN | 83 |
| 81250041100044 | CITYA LIBERTE | 81 |
| 40380764700017 | CABINET HARDY | 76 |
| 49166348000037 | EXA-GESTION | 75 |
| 32665016500185 | CABINET JEAN MICHEL LEFEUVRE | 70 |
| 89962608900028 | LE MARREC IMMOBILIER | 67 |
| 30238238700033 | AIGUILLON RESIDENCES | 54 |
| 89842314000034 | 35 MILLIEMES | 45 |
| 89009945000011 | POIRIER SYNDIC | 42 |
| 88070548800018 | SYNDIC DU COLOMBIER | 35 |
| 30249439800035 | ESPACIL HABITAT | 31 |
| 37887037200018 | PARTNER IMMOBILIER | 28 |
| 88791019800019 | THIERRY IMMOBILIER BRETAGNE | 27 |
| 65920103200011 | COGIR | 9 |
| 87956611500017 | GAUTIER & ASSOCIES | 3 |
| 94840632700015 | BRETAGNE SYNDIC | 3 |
| 31947323700026 | BREIZH GEO IMMO SARL | 2 |
| 79132826300011 | CHAPITRE IMMOBILIER | 2 |
| 88791019800043 | THIERRY IMMOBILIER BRETAGNE | 2 |
| 41225175300015 | SAS ESPACIL CONSTRUCTION | 1 |
| 45220075100025 | OPH RENNES METROPOLE ARCHIPEL HABITAT | 1 |