Suburb Overview
Underwood is a well-established middle-ring suburb of Brisbane, Australia, with a population of approximately 6,809, making it a smaller community. Located approximately 18 km from the Brisbane CBD, Underwood is a middle ring area in Queensland. The median household income is $103,584 per year.
Location
Key Indicators
Postcode
4119
Postcode for Underwood, from a community postcode dataset cross-checked against Australia Post. A postcode may cover multiple suburbs.
Australia Post Postcode Finder →
Population
6,809
Usual resident population at the most recent census.
Median weekly rent
$730/wk
Median weekly rent — as at Mar 2026, Residential Tenancies Authority (Qld) (CC BY 4.0).
Median household income
$103,584
Annual median household income (before tax) across all households.
Distance to CBD
18 km
Straight-line distance from the suburb centroid to the nearest capital city CBD. Actual driving distance will be longer.
Housing
Median monthly mortgage
$1,950/mo
Monthly median mortgage repayment for households currently paying off a mortgage.
Home type
80% houses
Proportion of separate houses versus units, townhouses, and other home types. Useful for investors assessing rental demand mix.
Why People Like Living in Underwood
- Well-connected to Brisbane at ~18 km from the CBD.
- Several schools in the area (around 2), attractive for families.
- Local parks and reserves (around 3) within easy reach.
- Well-serviced by public transport and major roads.
- Predominantly separate houses (80%) — suburban lifestyle with more land.
Who Underwood Suits
Pros and Cons
Pros
- Rent sits within an affordable share of local incomes, supporting tenant demand.
- Local parks and reserves (around 3) add to liveability.
- Solid transport links into employment hubs.
Cons
- Median mortgage sits above the Queensland state median — entry costs are stretched.
- Traffic can build during peak hours, especially on arterial roads.
Investment Insight
Underwood's population of 6,809 sits 24% above the Queensland suburb median of 5,474, giving it a wider tenant and buyer catchment than the average QLD locality. Median household income of $103,584/year runs 15% above the Queensland suburb median of $90,298, indicating strong purchasing power and the type of demographic profile that tends to sustain premium property prices through market cycles. Median rent of $730/week (as at Mar 2026, Residential Tenancies Authority (Qld)) equates to roughly $3,163/month — about 162% of the $1,950/month median mortgage repayment recorded at the 2021 Census. On those figures rental income covers most or all of the recorded repayment, but repayments on new loans have risen with interest rates since 2021, so re-run the coverage at today's rates before treating this as a cash-flow suburb. 18 km from Brisbane places Underwood in the middle commuter belt, close enough for daily trips by car or rail but at a materially lower price point than inner suburbs.
Investment Tip
Middle-ring locations like this one historically reward patient holders — focus on homes near catchment-zone schools and major transport. At the 2021 Census, local rents consumed roughly 20% of household income — a dated but useful sanity check on tenant affordability.
Underwood vs Queensland Median
How Underwood stacks up against the median of all Queensland suburbs in our dataset. Positive values mean Underwood sits above the state median; negative means below.
| Metric | Underwood | QLD median | Δ vs state |
|---|---|---|---|
| Population | 6,809 | 5,474 | +24% |
| Median household income | $103,584/yr | $90,298/yr | +15% |
| Median rent (weekly, 2021 Census) | $400 | $385 | +4% |
| Median mortgage (monthly, 2021 Census) | $1,950 | $1,733 | +13% |
| Distance to CBD | 18 km | 62 km | -71% |
| Separate houses | 80% | 77% | +3pp |
Investor Checklist
Pre-inspection briefing for Underwood — every item is derived from public datasets, with full citations in our data sources page.
- Market depth: 6,809 residents — 124% of the QLD suburb median (5,474).
- Purchasing power: median household income $103,584/year (+15% vs Queensland suburb median of $90,298).
- Cash-flow coverage (2021 Census): $400/week rent (≈ $1,733/month) covered ~89% of the $1,950/month median mortgage at the 2021 Census — verify against current rents and rates.
- CBD access: 18 km straight-line from Brisbane (state suburb median 62 km).
- Dwelling mix: 80% separate houses — house-dominant market (vs 77% state median).
- Rate stress-test: budget ~$195/month extra for a 1-percentage-point RBA rate rise on top of the $1,950/month median repayment.
- Tenant rent burden: 20% of the median household income is spent on rent — comfortably affordable.
Investment Strategy
Solid buy-and-hold profile: a population of 6,809 and household income close to the QLD median ($103,584 vs $90,298) give the market enough depth for patient capital growth without the premium entry price of inner suburbs.
Strong rental coverage at the 2021 Census: $400/week (~$1,733/month) covered 89% of the $1,950/month median mortgage, a shortfall of just $217/month. Both rents and repayments have moved since 2021 — verify current figures, though this suburb has historically leaned cash-flow-friendly.
With 80% houses in a 6,809-person market, renovation margins depend on individual street and aspect rather than any suburb-wide story — do comparable-sales analysis before committing capital.
Risk Factors
- Interest-rate sensitivity: the $1,950/month median mortgage in Underwood means a 1-percentage-point RBA rate rise could add roughly $195/month to repayments, reducing buyer borrowing capacity and cooling prices.
- Regulatory risk: changes to Australian tax settings (negative gearing, CGT discount, foreign-buyer surcharges, land-tax thresholds) could reshape after-tax returns in Underwood regardless of local market conditions.
- Market cycle risk: property markets are cyclical, so stress-test your projections in Underwood with a 10–15% price pullback scenario before committing capital — returns to date are not a guarantee of future performance.
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Start your first-home journey →2026 Outlook
Property values in Underwood should track the wider Queensland market through 2026, with the $103,584/year median household income (15% above the $90,298 state median) keeping the suburb firmly mid-pack. At the 2021 Census, rental coverage ran at ~89% of the typical mortgage ($1,733/month rent vs $1,950/month repayment), keeping cash flow in positive or near-neutral territory. Verify against current rents and rates. Overall investor sentiment for Underwood is constructive heading into the second half of 2026, based on its income, rent and mortgage profile relative to the Queensland median.
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Frequently Asked Questions
Is Underwood a good suburb for investment?
Whether Underwood suits you depends on your strategy, but the fundamentals are concrete: a population of 6,809, a median household income of $103,584/year and median weekly rent of $400. Weigh those against your goal — cash flow, capital growth, or a value-add renovation — each of which we break down with suburb-specific ABS numbers elsewhere on this page.
What drives property demand in Underwood?
The main demand drivers in Underwood are proximity to Brisbane (18 km), an above-state-median household income of $103,584/year, a dwelling mix that is 80% separate houses. Together these shape both owner-occupier and tenant demand.
What is the population of Underwood?
Underwood has a usual resident population of approximately 6,809, compared with a Queensland suburb median of 5,474 — placing it in the upper half of the state's suburbs by size. Population is the clearest proxy for market depth: more residents mean more transactions and typically a shorter average days-on-market on resale.
How far is Underwood from the Brisbane CBD?
Underwood sits 18 km straight-line from the Brisbane CBD. This is comfortable commuter territory, with reasonable rail and road access to the city.
What is the median rent in Underwood?
The most recent census recorded a median weekly rent of $400 in Underwood, equating to approximately $20,800/year in gross rental income (state median $385/week). Market rents have typically drifted above the recorded figure — verify against current listings on realestate.com.au and Domain before making an offer.
What is the typical mortgage repayment in Underwood?
The median monthly mortgage repayment in Underwood is $1,950, or approximately $23,400/year (vs $1,733/month state median). Stress-test your own borrowing at rates 1–2 percentage points above today's to make sure you can still service the loan through an RBA tightening cycle.
Is Underwood cash-flow positive for investors?
A median weekly rent of $400 works out to $1,733/month, covering 89% of the median mortgage repayment of $1,950/month. That leaves a $217/month shortfall (around $2,604/year before tax benefits), so a typical owner-occupier-priced property here is negatively geared. Actual cash flow depends on your deposit, loan terms, ownership costs and marginal tax rate — run the full numbers in our rental yield calculator.
What are the main risks of investing in Underwood?
The main risks are interest-rate sensitivity on the $1,950 median mortgage, the broader Queensland market cycle. Each of these is covered in the Risk Factors section above with suburb-specific numbers rather than generic warnings.
How we built this Underwood profile
The population, postcode, median household income, and dwelling mix on this page are real figures from the ABS 2021 Census (income is the ABS median weekly household income annualised) and Australia Post. Distance to the CBD is calculated from the suburb's ABS centroid. The Census median rent and mortgage repayment are 2021 figures and are clearly labelled as such wherever they appear — they are five years old and have moved substantially since. The current median weekly rent in Key Indicators is a genuine recent figure from Residential Tenancies Authority (Qld) (Mar 2026), published under a Creative Commons licence — it is dated on the page and is separate from the older Census rent. We do not publish an investment score or school/park counts for this suburb. See our methodology and data sources for exactly what's measured and what's estimated.