| 45262630 |
Adeiladu ffwrneisi |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262690 |
Adnewyddu adeiladau sydd wedi’u mynd â’u pennau iddynt |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261910 |
Atgyweirio toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262521 |
Bricwaith wyneb |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262511 |
Cerfio carreg |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262220 |
Drilio ffynhonnau dwr |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262700 |
Gwaith addasu adeiladau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45000000 |
Gwaith adeiladu |
Adeiladu ac Eiddo Tiriog |
| 45262600 |
Gwaith adeiladu crefft arbennig amrywiol |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262000 |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
Gwaith toi a chrefftau adeiladu arbennig eraill |
| 45262423 |
Gwaith adeiladu deciau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262424 |
Gwaith adeiladu modiwlau ar y môr |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262421 |
Gwaith angori ar y môr |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45200000 |
Gwaith ar gyfer gwaith adeiladau cyflawn neu rannol a gwaith peirianneg sifil |
Gwaith adeiladu |
| 45261900 |
Gwaith atgyweirio a chynnal a chadw toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262330 |
Gwaith atgyweirio concrit |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262900 |
Gwaith balconi |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262311 |
Gwaith carcas concrit |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262400 |
Gwaith codi dur strwythurol |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262410 |
Gwaith codi dur strwythurol ar gyfer adeiladau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262420 |
Gwaith codi dur strwythurol ar gyfer strwythurau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261000 |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
Gwaith toi a chrefftau adeiladu arbennig eraill |
| 45262120 |
Gwaith codi sgaffaldiau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262300 |
Gwaith concrit |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262350 |
Gwaith concrit anghyfnerthedig |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262310 |
Gwaith concrit cyfnerth |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261320 |
Gwaith cwteru |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262710 |
Gwaith cynnal a chadw ffresgos |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261920 |
Gwaith cynnal a chadw toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262110 |
Gwaith datgymalu sgaffaldiau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261420 |
Gwaith diddosi |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262422 |
Gwaith drilio tanfor |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262800 |
Gwaith estyn adeiladau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261100 |
Gwaith fframio toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261200 |
Gwaith gorchuddio a phaentio toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261210 |
Gwaith gorchuddio toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261213 |
Gwaith gorchuddio toeau â metel |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262370 |
Gwaith gosod araen concrit |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261222 |
Gwaith gosod araen sment ar do |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262520 |
Gwaith gosod brics |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262650 |
Gwaith gosod cladin |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261400 |
Gwaith gosod dalennau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262212 |
Gwaith gosod dalennau metel mewn ffosydd |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261214 |
Gwaith gosod gorchuddion to bitwminaidd |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261215 |
Gwaith gosod paneli solar ar doeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262340 |
Gwaith growtio |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262640 |
Gwaith gwella amgylcheddol |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262425 |
Gwaith gwneud siacedi |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261410 |
Gwaith inswleiddio toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262320 |
Gwaith lefelu |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262321 |
Gwaith lefelu lloriau |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262510 |
Gwaith maen |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262512 |
Gwaith maen nadd |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45261221 |
Gwaith paentio toeau |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261220 |
Gwaith paentio toeau a gwaith araenu arall |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261310 |
Gwaith plygiadau plwm |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261300 |
Gwaith plygiadau plwm a landeri |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262522 |
Gwaith saer maen |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262500 |
Gwaith saer maen a gwaith gosod brics |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262426 |
Gwaith saernïo pyst sylfaen |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262100 |
Gwaith sgaffaldio |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262360 |
Gwaith smentio |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262210 |
Gwaith sylfeini |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262200 |
Gwaith sylfeini a drilio ffynhonnau dwr |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45260000 |
Gwaith toi a chrefftau adeiladu arbennig eraill |
Gwaith ar gyfer gwaith adeiladau cyflawn neu rannol a gwaith peirianneg sifil |
| 45261212 |
Gwaith toi â llechi |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45261211 |
Gwaith toi â theils |
Gwaith codi fframiau a gorchuddion to a gwaith cysylltiedig |
| 45262660 |
Gwaith tynnu asbestos |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262670 |
Gweithio metel |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262610 |
Simneiau diwydiannol |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262211 |
Stancio |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262213 |
Techneg wal diaffram |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262620 |
Waliau cynnal |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |
| 45262680 |
Weldio |
Gwaith adeiladu crefftau arbennig heblaw gwaith toi |