Find a builder in St Marys
Need help with extensions, renovations or repairs? Check whether a builder currently covers St Marys, then describe the work. Available businesses can contact you directly to discuss a quote.
How it works
- Step 1
Tell us the job and suburb.
A short description helps the right tradies decide whether the work suits them.
- Step 2
Confirm your mobile.
We send a one-time SMS code so the request is tied to a real person.
- Step 3
Hear from available tradies.
If we have a match, no more than 3 businesses that cover St Marys may contact you directly.
Before you hire a builder
When they join, tradies confirm they hold the licences and insurance their work requires, but we don't independently check those documents at present. We provide the introduction: the business quotes and carries out the work directly, and we don't supervise the work or guarantee the outcome.
- Ask for the relevant NSW licence number.
- Check the licence with NSW Fair Trading.
- Request current insurance details.
- Get the scope, price and timing in writing.
What affects the price
Building cost drivers include:
- Soil conditions. Reactive clay can need deeper or stiffer footings than stable ground, so a soil test comes first.
- Site access. Narrow frontages, steep lots and limited room for machinery add cost.
- Specification level. Builder-standard and custom finishes can differ widely in price.
- Fees and charges. Development applications, certification, development contributions and inspection fees all add to larger projects.
Ask about any call-out fee before someone visits, and compare written quotes for the same scope of work.
Questions about hiring a builder in St Marys
Is it free to request a builder in St Marys?
Yes. Sending a job request through Blacktown Tradies is free and there's no obligation to hire. The business you hire charges you for its work.
Are the builders on Blacktown Tradies verified?
We confirm homeowners' mobile numbers by SMS. When they join, tradies confirm they hold the licences and insurance their work requires, but we don't independently check those documents at present. Check credentials before hiring.
How many builders will contact me?
Your request goes to no more than 3 businesses that do building work and cover St Marys. How many get in touch depends on how many businesses cover it and whether the job suits them. We show availability before you send a request, but we can't guarantee a number of quotes.
Who gets my details?
After you confirm your mobile by SMS, no more than 3 businesses that list the trade and your suburb receive your name, mobile number, suburb and job description, and may contact you about the job. Nobody receives them before you confirm, and if no business covers the job we don't send it to anyone.
Does a builder need a licence in NSW?
It depends on the job. In NSW, plumbing, drainage, gasfitting and electrical wiring work, and many home building jobs, need a licence, and NSW Fair Trading explains which work does. If yours does, ask for the licence number and check it before work starts.
More detail is in our privacy policy and terms.
Hiring a builder in St Marys
St Marys (postcode 2760) is in the western part of Blacktown City, around Mount Druitt. A suburb with a major town centre and railway station on the border of Blacktown City and Penrith.
Only part of St Marys is in Blacktown City. Businesses that list it may not cover every street, so mention your street in the job description.
Homes in established suburbs vary widely in age and construction. If you know roughly when your home was built, or what has been renovated since, mention it in the job description: it helps a business understand what they're likely to find.
In an established home, building work can mean an extension, a second storey, a new kitchen or bathroom, or a granny flat in the backyard. Opening up older walls and floors can reveal problems, so ask the builder how variations will be priced and approved.
For a renovation, extension or granny flat in St Marys, ask the builder which approval pathway applies (a development application to Blacktown City Council or a complying development certificate), who prepares the plans, and how long approval and construction are expected to take.
What to put in your request
Describe the project, its rough size and your timeframe, whether you already have plans or approvals, and the age of the home. For repairs, describe the damage and how long you've noticed it. Don't include your street address in the description.
What to ask before hiring
Ask for the builder's licence number and check it with NSW Fair Trading, for work over $20,000 ask for the Home Building Compensation (HBC) certificate before you pay a deposit, and get a written contract with the scope, price, payment stages and timeline.
Licences and rules in NSW
In NSW, residential building work over $5,000 needs a licensed builder, and work over $20,000 also needs Home Building Compensation (HBC) cover before the builder takes a deposit or starts work. Ask for the licence number, check it with NSW Fair Trading, and ask for the HBC certificate before you sign or pay a deposit. The Home Building Act 1989 gives statutory warranties of six years for major defects and two years for other defects.
Building upkeep through the year
After building work, keep your contract, plans, certificates and warranty paperwork together. Note any defects in writing and tell the builder promptly, and check drainage around the house, retaining walls and subfloor ventilation from time to time.
When a business contacts you, it's fine to ask whether they've done similar jobs nearby and when they could start.
Ready to describe the job?
Check whether a builder covers St Marys, then tell us what you need.
Do you run a building business in Blacktown City? See how membership works for tradies.