Building analysis · 71-85 Spring Street, Bondi Junction

Height is not the premium

One hundred and eight sales across nineteen floors of a Bondi Junction tower — and the view costs less than you'd think.

Ask most people what makes one apartment in a tower worth more than another and they will say the floor. Higher is better, and the top is best. It is the most intuitive idea in vertical living, and it is repeated so often that nobody bothers to check it.

The tower at 71-85 Spring Street lets you check it. Because the apartment numbers encode the level — 1002 is on ten, 2803 is on twenty-eight — every sale in the register can be placed on a floor. I have 108 verified sales spanning levels 10 to 28. That is enough to ask a simple question: how much does going up actually pay?

The answer is that it pays, and then it stops paying, and something else takes over entirely.

The ladder

First, the shape of the whole building. Ranked from lowest sale to highest, the 108 results run from $700,000 to $5,600,000 — an eightfold range inside a single strata plan.

The middle is dense and the top is thin. Twenty-four sales sit under $1,000,000 and six sit above $3,500,000. The median is $1,610,000 and the average $1,794,776 — a gap of nearly $185,000, created almost entirely by a handful of results at the very top.

What the floors say

Now group those sales by level. If the intuition about height were right, this chart would climb from left to right.

It does not climb. It steps up once, between the low teens and level 15, and then it flattens completely. Levels 15 to 19 record a median of $1,702,500. Levels 25 to 28 — the top four floors of the building — record $1,615,000, which is lower.

There is a real premium for getting above the surrounding rooflines and into clear air. Once you are there, the market stops paying for altitude. A buyer on level 27 is not looking at a materially better outlook than a buyer on level 18, and the price register says they know it.

The market pays to clear the rooftops. It does not pay to keep climbing after that.

What actually sets the price

If height explains so little above level 15, something else must be doing the work. Group the same sales by their position on the floorplate instead — the last two digits of the apartment number, which stay constant as you go up — and a much sharper pattern appears.

Line 11 records a median of $2,255,000. Line 04 records $1,020,000. That is a 2.2-fold difference between two stacks of apartments in the same tower, sharing the same lifts and the same levy schedule, separated by nothing but where they sit on the floorplate.

The building sorts into two clear halves. Lines 02, 05, 07, 08 and 11 all sit above $1,700,000. Lines 01, 04, 06 and 10 all sit below $1,300,000. Whatever those first five have — aspect, outlook, floor area, or all three together — it is worth more than nine storeys of height.

An honest caveat

I can't separate aspect from size here, because the export carries neither floor area nor bedroom count. It is entirely possible that line 11 is simply the three-bedroom stack and line 04 the studios, in which case the chart is measuring square metres rather than views. My own reading is that it's both — larger apartments are usually placed on the better aspect — but I want to be clear that the data alone doesn't settle it.

Two things that don't belong

Worth naming, because they would distort any figure quoted from this register.

Three separate apartments record a sale price of exactly $5,600,000. Prices that round can repeat by coincidence, but three identical results at the top of one building is more likely a single transaction across multiple lots than three unrelated sales. Set them aside and the building median falls to $1,577,500.

And one apartment on the top floor records $700,000 — the lowest price in the entire dataset, sitting directly above results of $4,600,000 and $5,060,000 on the same level. Without a sale date I can't tell whether that's an old transaction, a family transfer, or an error. I would not use it either way.

An eightfold price range, and the floor number explains almost none of it.

If you own here

Your floor is not your case

Above level 15, height stops carrying the argument. If your appraisal leans on being high in the building, it is leaning on something the sales record does not support.

Your line is your comparable set

The apartments directly above and below yours — same last two digits, same aspect, same floorplate — are the truest comparables you have. There are typically five to twelve of them in this register, which is a genuine evidence base.

The building median will mislead you either way

At $1,610,000 it sits between two halves of a building that trade $700,000 apart. If you're on the strong side it undersells you. If you're on the other, it sets an expectation you'll spend months failing to meet.