Who lives here
8,898
residents at the 2021 Census
- Median age40
- Aged 65+15%
- Under 2533.1%
- Median household income$2,681/wk
- Median rent$530/wk
Hornsby, New South Wales
Good money, a small strip, and very little patience for a slow site.
Thornleigh sits on the upper North Shore rail corridor where the workforce mostly leaves the suburb to earn its living and comes home to spend it. Across the Hornsby council area, professional, scientific and technical services is the largest industry by business count, 3,192 strong, a number that tracks with commuters heading into the city rather than shopfronts opening on the local strip. Thornleigh's own population is 8,898, the median age is 40, and household income runs to $2,681 a week, well above what a suburb this size usually returns. This is a bedroom suburb with a professional's income and a professional's expectations.
A physiotherapist working out of a Thornleigh shopfront right now is booked through referrals from two local GPs, fine until one retires or a competitor opens nearer the station. Household income here is $2,681 a week, family income $3,016, which means the person searching for a physio in Thornleigh at nine at night is not hunting for a discount, they are choosing on trust and presentation before they pick up the phone. The same test applies to an electrician quoting a switchboard upgrade on an older brick home near the ridge, or a mortgage broker working the refinance market at that income level: the site has to look like it belongs to someone trusted with a job that costs real money, not a page nobody has touched since launch. Word of mouth still starts the conversation here, but the website is what closes it.
Three vetted Australian developers, hand-picked to a Thornleigh brief, quoted in writing within 24 hours. Free, no obligation.
Live ABS data · updated 2026-08-29
The Thornleigh market, by the numbers.
Pulled from the Australian Bureau of Statistics: the 2021 Census for Thornleigh itself, and the latest Data by Region release (2025) for the Hornsby area. This is the market your website sells into.
The business scene
~850
businesses in Thornleigh (estimated*)
- Hornsby total14,625
- Solo / non-employing8,778
- 1–4 staff4,522
- 5–19 staff1,053
- 20+ staff272
91% of local businesses have fewer than 5 staff. That's exactly who FindDevs was built for.
Biggest local industries
Businesses by industry, Hornsby (2025)
-
Professional, scientific & technical services3,192
-
Construction2,195
-
Rental, hiring & real estate1,561
-
Health care & social assistance1,420
-
Transport, postal & warehousing827
-
Retail trade821
*Suburb business estimate: LGA business count (ABS CABEE, Data by Region) apportioned by the suburb's share of the LGA population at the 2021 Census; rounded to the nearest 10. Sources: ABS Census 2021 (Suburbs and Localities), ABS Data by Region. Refreshed 2026-08-29.
Typical projects
What Thornleigh businesses actually build.
Indicative ranges from briefs like these in the FindDevs network. Your three quotes will be specific to your scope.
Professional Services Site
Typical price
$3,500 – $8,500
Timeline
3–5 weeks
For consultants, allied health practices and firms trading on Thornleigh's professional address. Built to convert a referral into a booked appointment, not a phone call left unanswered.
- Booking or enquiry form
- Staff and credentials pages
- Mobile-first, fast load
- Local SEO for referral searches
Trade & Construction Site
Typical price
$3,000 – $8,000
Timeline
2–4 weeks
For electricians, builders and the trades pricing jobs on the older homes around the ridge. Shows the work, the licence and the quote process before the phone even rings.
- Photo gallery of past jobs
- Licence and insurance details
- Quote request form
- Google Maps and service area
Property & Rental Portal
Typical price
$4,500 – $12,000
Timeline
4–8 weeks
For property managers and real estate operators handling rentals and listings across Hornsby. Built to list, filter and enquire without a phone call for every property.
- Searchable property listings
- Enquiry and inspection booking
- Agent profiles and contact
- Map-based search filters
Free · No signup wall · Stay anonymous if you want · 2 minutes
Why FindDevs in Thornleigh
Local knowledge, without being stuck with one local option.
Three quotes, not one local guess.
Around Thornleigh the problem isn't finding someone who says they build websites. It's telling who's actually good. We vet so you don't have to, then hand you three written quotes from developers matched to your exact brief, in 24 hours.
All Australian. All vetted.
Every developer holds an ABN, works Australian hours, and passed our vetting: portfolio, communication, and references from Aussie clients. 12% acceptance rate. No offshore hand-offs.
Built for Thornleigh's actual customers.
The median age in Thornleigh is 40. Your customers find everything on their phones, usually in a spare minute. We match developers who build mobile-first, fast-loading pages that turn that search into a call or a booking.
Free, with a safety net.
The service costs you nothing. Developers cover our fee from their winning quote, never inflated into your price. And if a matched developer drops the ball mid-project, we step in. Service Guarantee, always.
FAQ
Thornleigh questions.
It depends on what the site needs to do. A professional services site for a consultant or allied health practice runs $3,500 - $8,500. A trade or construction site for an electrician or builder is usually $3,000 - $8,000. A property or rental portal with listings and booking sits between $4,500 and $12,000. Every quote is fixed-price and comes from three vetted developers within 24 hours, so you're comparing real numbers, not estimates that move once the work starts.
Most projects for a Thornleigh business take 2-8 weeks depending on scope. A straightforward trade site is usually 2-4 weeks. A professional services site with booking and staff pages runs 3-5 weeks. A property portal with listings and search takes longer, typically 4-8 weeks, because the data structure has to be right before the design goes on top of it.
No. FindDevs matches you with three vetted Australian developers based on the brief, not the postcode. What matters for a Thornleigh business is a developer who understands the professional, health and trade mix here, from a physiotherapist's booking flow to an electrician's quote form, and builds a site that holds up against what customers already expect on household incomes of $2,681 a week.
Fixed prices
Know the price before you talk to anyone.
These are published fixed-price builds, available to Thornleigh businesses like any other. No hourly rates, no discovery call before you can see a number.
Starter Business Website
$1,990
1–2 weeks
A sharp five-page website that makes a small business look established, live in a fortnight.
See what's includedProfessional Business Website
$4,950
2–4 weeks
The full small-business build: 8–12 pages, booking or quoting flows, and local SEO that actually ranks.
See what's includedLocal SEO Build-Out
$2,950
2 weeks
The ranking machine bolted onto your existing site: service pages, suburb pages, schema and reviews, done properly once.
See what's includedWebsite Care Plan
$190
Ongoing monthly
Hosting, updates, backups, security and monthly changes, all handled, so your site stays fast and safe without you thinking about it.
See what's included
Your industry
Developers who have built for your trade before.
The biggest employers around Thornleigh, by registered businesses in Hornsby. Each one has its own page, because a cafe site and a plant-hire site are not the same job.
Professional, scientific & technical services
3,192
local businesses
Web developers for this sector
Construction
2,195
local businesses
Web developers for this sector
Rental, hiring & real estate
1,561
local businesses
Web developers for this sector
Health care & social assistance
1,420
local businesses
Web developers for this sector
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