Campbelltown City Council
Private building certifier in Glen Alpine
Glen Alpine homes are now old enough for extensions, pools and second storeys. We help owners find the right approval path before drawings are finalised, then certify the work through to completion.
NSW 2560
Class 1 homes and Class 10 structures
Local rules
What shapes building work in Glen Alpine
A golf course estate of detached homes
Lend Lease launched the Glen Alpine estate in September 1986, years after the golf course opened in 1978. The 2021 Census counted 4,429 residents. Separate houses made up 1,317 of its 1,340 occupied homes. It is among the most detached suburbs around Campbelltown.
Heritage that hides under other names
Campbelltown Local Environmental Plan 2015 is the main planning instrument. Its heritage schedule lists two local items in the suburb: the old homestead site at Heritage Park and a later house at Belltrees Close. Two State Heritage Register areas also reach into Glen Alpine. Sugarloaf Farm and the Upper Canal System are recorded under Gilead and Denham Court, so a suburb name search misses them. Work affecting a State item also needs Heritage NSW approval. The original homestead dated from the late 1820s and was destroyed by fire early last century. Heritage Park, reached from Abington Crescent, now covers the site and keeps trees planted by the Reddall family.
Subsidence, zones and bushfire
Glen Alpine is inside a proclaimed mine subsidence district (South Campbelltown). Toward the Scenic Hills, low density residential zoning gives way to environmental living and environmental management zones. Mapped minimum lot sizes there run from 500 square metres to 2 hectares and even 100 hectares. Parts of the suburb also carry bushfire mapping, covering all three vegetation categories.
Typical work
Common projects and how they get approved
What owners build here
Plenty of homes here went up from the late 1980s and are now due for renovation. Typical jobs include:
- Extensions and second storeys. Confirm the lot and existing frame can support the added load.
- Pools. Plan the barrier and the pool's position on the lot together.
- Sheds, garages and alfresco roofs. Check setbacks and any bushfire mapping first.
- Granny flats. The zone matters, along with the block's size and frontage.
How approval usually works
Simple sheds or pergolas may be exempt. Bigger jobs need either a CDC (a certifier's fast-track approval under state codes) or a DA, which council decides before a construction certificate is issued. Mapped heritage, bushfire or environmental zoning can rule a CDC out. Inside the subsidence district, Subsidence Advisory NSW must also approve building work. The district boundary and the suburb boundary differ, so check your lot on the NSW Planning Portal. Start by sending a planning certificate and a survey of the lot. CertifiBuild then reads the mapping for your address and explains the pathway in plain terms.
Our services
From approval to sign-off.
One certifier for your whole Glen Alpine job, from the first plan check to the occupation certificate.
Local questions
Questions we hear about this suburb.
No two lots in Glen Alpine are the same. Give us your address and we will check every map that affects it.
See the council pageCould a State heritage area reach onto my Glen Alpine lot?
It could, and a suburb search will not show it. Sugarloaf Farm and the Upper Canal System are State heritage areas that extend into Glen Alpine, yet they are recorded under Gilead and Denham Court. Your planning certificate or the heritage mapping will reveal whether either covers your lot. If one does, work affecting it also needs a separate Heritage NSW approval, beyond planning approval, and a complying development certificate (CDC) may be ruled out. Check this before design, especially near the suburb’s edges.
Do I need a separate approval because of mine subsidence?
Possibly. Glen Alpine lies inside the South Campbelltown mine subsidence district. On any property inside that district, Subsidence Advisory NSW must sign off the building work, alongside council consent or a complying development certificate (CDC). The district line and the suburb line are not the same, so confirm your lot’s position on the NSW Planning Portal. Raise it with your engineer early, because the requirements can affect footings and structural design, particularly for second storeys and large extensions.
Is a granny flat possible near the Scenic Hills edge?
The zone decides it. Where a lot is zoned for low density housing and has enough area and frontage, a granny flat is often possible. Closer to the Scenic Hills, land shifts into environmental living and environmental management zones, where mapped minimum lots vary widely, from 500 square metres right up to 100 hectares, and the rules differ. Bushfire mapping also affects some streets and can rule out a complying development certificate (CDC). Check your zone and bushfire status before design begins.
Building in this suburb?
Send us the address first.
We check the local maps for your lot, confirm the approval path and quote in writing.