Suburb Deep Dives · 18 October 2026 · 6 min read
Diddillibah (QLD 4558) in Focus 2026: Is It a Good Investment? R-Score 99/100, 4.7% Yield & Best Streets
Data analysis by the Ripehouse research desk · Reviewed by Anna Cooper, Co-Founder & COO, former Managing Editor of Australian Property Investor Magazine
Is Diddillibah (QLD 4558) a good suburb to invest in 2026? Our October 2026 quantitative audit scores Diddillibah at 99/100 (Ranked #179 of 15,286 suburbs), with a $1,560,000 median house price (-15.7% 12m), $1400/wk rent (4.7% yield), and 19 top-tier streets scoring 75–100/100.
Market Classification: Established Family & Commuter Corridor · R-Score: 99/100 (National Rank #179 of 15,286) · Street Average: 82/100 across 26 streets.
Diddillibah (QLD 4558) represents a bread-and-butter Australian family housing market($1,560,000 median price, $1400/wk rent, 4.7% gross yield) supported by +7.7% 3-year council population movement. Here, investment returns are determined almost entirely by micro-location: separating quiet, >65% owner-occupied pockets from main-road or high-public-housing blocks.
“I’d treat the 4.7% gross yield as a starting point, not a comfort blanket. At a $1.56 million median, the fact sheet still shows negative $430 a week at 80% LVR. I’d compare individual streets and properties carefully, because broad suburb averages leave little room for mistakes.”
Below is our full October 2026 quantitative and street-level breakdown for Diddillibah (QLD 4558), combining 36 months of settled price and rental history from our Aurora research warehouse, council-level supply and employment data for Sunshine Coast (QLD), and block-by-block ABS 2021 Census SA1 tenure and yield rankings across 1,358 residential addresses.
1. Diddillibah (QLD) 3-Year Market Trajectory & 27-Indicator R-Score (October 2026)
Over the past 12 months, Diddillibah’s median house price moved -15.7% (from $1,850,000 to $1,560,000), bringing its 3-year cumulative price movement to +7.1% (from $1,457,000 three years ago). On the rental side, median weekly asking rents moved -6.7% over the past year to $1400/wk (+42.9% over 36 months), equating to a 4.7% gross rental yield. Compared with 12 months ago—when Diddillibah carried an R-Score of 97/100—its current composite R-Score of 99/100 represents a +2-point shift in underlying market pressure.
| Indicator / R-Score Pillar | Diddillibah (QLD) Current | 12-Month / 36-Month Context |
|---|---|---|
| Composite Suburb R-Score | 99 / 100 | Ranked #179 of 15,286 suburbs (was 97/100 12m ago) |
| Median House Price | $1,560,000 | 12m change: -15.7% · 36m change: +7.1% |
| Median Weekly Rent & Gross Yield | $1400/wk (4.7%) | 12m rent change: -6.7% · 36m rent change: +42.9% |
| Rental Vacancy & Days on Market | 2.5% vacancy | Median selling time: 32 days on market (1.5% vacancy is the tight-market line) |
| Pillar 1: Buyer Demand | 48 / 100 | Measures days-on-market compression, vendor discounting & sales velocity |
| Pillar 2: Supply & Ownership | 62 / 100 | Measures stock on market, building approvals vs stock & owner-occupier share |
| Pillar 3: Price Momentum | 52 / 100 | Measures short/medium-term price velocity vs Sunshine Coast & QLD |
| Pillar 4: Yield Pressure | 57 / 100 | Measures gross rental yield, rent trajectory & vacancy compression |
2. The “Two-Speed Suburb” Test: Best & Worst Streets in Diddillibah (QLD)
Why do two 4-bedroom houses in Diddillibah achieve completely different bank valuations and tenant quality? Because suburb medians blend every pocket together. When we map all 1,358 addresses across 26 streets in Diddillibah through G-NAF to their ABS 2021 Census SA1 blocks, the suburb splits into three distinct tiers:
- Strong Street Profile (Score 75–100): 19 streets (100% of scored streets) pass both ABS Census tenure tests (owner-occupiers >65% and public housing ≤5%) plus at least one—or both—of the Diddillibah rent and yield benchmarks.
- Mid / Mixed Street Profile (Score 50–74): 0 streets pass the core owner-occupier and public-housing thresholds but sit below the suburb median on weekly rent or yield.
- Weaker / Caution Street Profile (Score 0–25): 0 streets fail one or both census tenure thresholds—meaning either owner-occupation sits at or below 65% or state/community public housing exceeds 5% on those specific SA1 blocks.
Top 5 Highest-Scoring Streets in Diddillibah (QLD)
These streets sit in SA1 census blocks with high homeowner pride of ownership, minimal social housing concentration, and strong block-level rents (inspect all 26 streets in Diddillibah):
| Top Street in Diddillibah | Street Score | Addresses | Owner-Occupiers | Public Housing | SA1 Rent & Yield |
|---|---|---|---|---|---|
| #1 Bahdilli Crescent | 100/100 | 30 | 91% | 0% | $1100/wk (3.5%) |
| #2 Melcar Court | 100/100 | 12 | 91% | 0% | $1100/wk (3.5%) |
| #3 River Gum Drive | 100/100 | 69 | 91% | 0% | $1091/wk (3.6%) |
| #4 Buderim View Place | 100/100 | 18 | 86% | 0% | $1808/wk (7%) |
| #5 Eudlo Flats Road | 100/100 | 50 | 86% | 0% | $1835/wk (7.1%) |
3. Economic & Supply Drivers in Sunshine Coast Council (Queensland)
Diddillibah sits within the Sunshine Coast Local Government Area, which has a residential population of approximately 381,957 (+7.7% population movement over the past 3 years) and 130,380 total dwellings. Three council-level fundamentals shape Diddillibah’s medium-term outlook:
- Local Employment Diversity (ABS Census): The largest employment sectors across Sunshine Coast are Health Care and Social Assistance (16%), Retail Trade (12%), Education and Training (10%), Accommodation and Food Services (9%). Multi-sector employment reduces reliance on any single employer or commodity cycle.
- New Building Approvals vs. Existing Stock: Over the latest 12-month financial year, Sunshine Coast approved 2.3% new dwelling stock (~3,291.244 dwellings). Because new approvals exceed 1.8% of stock, investors in Diddillibah must avoid generic greenfield house-and-land pockets and stick to established, built-out streets.
- Tracked Infrastructure Pipeline: Sunshine Coast currently has $20.0 billion in tracked major infrastructure projects (placing it in the 95th percentile of Australian councils).
4. Worked Cashflow, Deposit & 80% LVR Stress-Test for Diddillibah (October 2026)
What does it actually cost to acquire and hold a typical house in Diddillibah at today’s median price of $1,560,000 and median rent of $1400/wk? Below is the baseline 80% Loan-to-Value Ratio (LVR) model we use to stress-test serviceability before shortlisting a property:
| Cashflow & Capital Item | Diddillibah Worked Figure | Assumptions & Notes |
|---|---|---|
| Purchase Price (Suburb Median) | $1,560,000 | Settled house median as of October 2026 |
| 20% Deposit + Est. Stamp Duty & Costs | $386,880 | $312,000 deposit (80% LVR) + ~$74,880 stamp duty, legal & inspection allowance (can be funded via usable home equity) |
| 80% LVR Loan Amount | $1,248,000 | Standard no-LMI investor loan threshold |
| Gross Annual Rental Income | $72,800/yr ($1400/wk) | 4.7% gross rental yield before vacancies and expenses |
| Est. Annual Interest + Operating Costs | $95,160/yr | Assumes 6.25% interest-only ($78,000/yr) + ~1.1% for council rates, insurance & property management ($17,160/yr) |
| Pre-Tax Weekly Cashflow Position | -$430/wk top-up | Before tax deductions / depreciation (confirm post-tax position with your accountant) |
5. Who Should Buy in Diddillibah—And 3 Rules Before You Make an Offer
Solid 99/100 R-Score Backed by Sunshine Coast Fundamentals. Based on our October 2026 data, Diddillibah is best suited to higher-income professionals, medical practitioners, and upgraders with strong cashflow buffers targeting scarce land in an owner-occupier dominated suburb.
- Never Buy Blind on the Suburb Median: In Diddillibah, 0 streets score below 50/100 on our census tenure and yield tests. Always run the exact street through the Diddillibah Street Score Hub and target the 19 streets scoring 75–100/100.
- Check Lot-Level Overlays (Flood, Bushfire, Slope & Easements): Even on a 100/100 streetlike Bahdilli Crescent, individual lots can carry overland flow paths, steep gradients, or sewer easements that restrict granny-flat additions or spike insurance premiums.
- Price Against Street-Matched Settled Comparables: Do not let a selling agent justify an asking price on a 25/100 street using comparable sales from a 100/100 street. Compare settled sales within the same SA1 Street Score band.
If there's a specific street you're weighing up right now, check its Street Score first — it's free, takes ten seconds, and tells you whether that street is pulling the suburb average up or riding on it.
Market data & R-Scores for locations in this article
Drill Down Into the Markets Mentioned Above
Inspect live monthly R-Scores, median prices, rental yields, and street-by-street scores for the cities and council areas referenced in this article:
Frequently asked questions
Is Diddillibah (QLD 4558) a good suburb for property investment in 2026?
As of October 2026, Diddillibah (QLD 4558) scores 99/100 on the 27-indicator Ripehouse R-Score (ranked #179 of 15,286 Australian suburbs). It is classified as a Established Family & Commuter Corridor with a median house price of $1,560,000, median rent of $1400/wk (4.7% gross yield), and vacancy rate of 2.5%.
How have house prices and rents performed in Diddillibah over the past 1 to 3 years?
Over the past 12 months, Diddillibah’s median house price moved -15.7% to $1,560,000, and +7.1% over the past 36 months. Median weekly asking rents moved -6.7% over the past year to $1400/wk (4.7% gross yield).
What are the highest and lowest scoring streets in Diddillibah, QLD?
Across 26 streets (1,358 addresses) in Diddillibah, 19 streets score 75 to 100 on the Ripehouse Street Score, led by Bahdilli Crescent (100/100, 91% owner-occupied), Melcar Court (100/100, 91% owner-occupied), River Gum Drive (100/100, 91% owner-occupied). Meanwhile, 0 streets score below 50 due to lower owner-occupation or public housing concentration above 5%.
How much deposit and weekly cashflow is needed to buy a median house in Diddillibah?
At Diddillibah’s median house price of $1,560,000, an 80% LVR purchase ($1,248,000 loan) requires approximately $386,880 in cash or usable home equity ($312,000 deposit plus around $74,880 for stamp duty and acquisition costs). At $1400/wk rent and a 6.25% interest-only benchmark, estimated pre-tax cashflow is -$430/wk before tax deductions.
What is the housing supply pipeline and economic profile of Sunshine Coast Council?
Diddillibah is located in the Sunshine Coast (QLD) Local Government Area (population around 381,957, +7.7% 3yr growth). Annual building approvals sit at 2.3% of existing dwelling stock. Tracked major infrastructure spend is $20.0B. Top employment sectors are Health Care and Social Assistance (16%), Retail Trade (12%), Education and Training (10%).
General information only. It does not take your objectives, financial situation or needs into account, and nothing here is legal, financial, taxation or investment advice specific to your circumstances.