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Brookmans Park market report AL9 5, Hatfield
The standing AL9 5 (Brookmans Park) property market report, rebuilt from the full public record every month. This page is built from the public record and nothing else: 1,522 completed sales registered with HM Land Registry in AL9 5 (Hatfield) since 1995, plus current ONS rental figures. There are no valuations, estimates or asking prices in it.
Covers registered sales to 2026 and ONS rents for May 2026. Refreshed monthly as new sales reach the register.
In short: the middle 2026 sale in AL9 5 (Hatfield) came in at £280,000, out of 15 registered, down 37% on five years earlier, and the mean stands at £411,600, and by floor area homes here have averaged about £4,790 per square metre over the last five years. The record behind it is 1,522 completed sales lodged with HM Land Registry since 1995, monthly refreshed, with no valuations or asking prices anywhere in the figures.
AL9 5 is a postcode sector: one group of streets inside AL9 (Hatfield). This is as local as the public record gets, but sector medians move on fewer sales than a district's, so expect the lines to be lumpier.
Where AL9 5 sits
Shaded by median price on the same scale as the average prices map. Click any shape to open it on the live map with every sale plotted at its address, or zoom in past street level to see the sold homes right here.
The going rate for a home in AL9 5
The AL9 5 median stands at £280,000 for 2026, built from 15 registered sales; the mean, the figure usually quoted as the "average house price", is £411,600, well clear of it: the mark of a market where a small number of costly homes drag the average upwards.
House prices per square metre in AL9 5
The last five years of sales put AL9 5 at roughly £4,790 per square metre. That figure, built from each sale's Energy Performance Certificate floor area, is the one that makes a small flat and a big house comparable.
For scale: the England and Wales median is £285,000, so AL9 5 trades 2% below the country as a whole.
The price of a typical AL9 5 home, 1995 to 2026
The cash median beside its inflation-adjusted twin (ONS CPIH). The adjusted line answers the harder question, whether homes really got dearer. Hover for the figures; the legend toggles each series.
See this chart as a table
| Year | Median (cash) | Median (today's £) | Sales |
|---|---|---|---|
| 2026 | £280,000 | £280,000 | 15 |
| 2025 | £450,000 | £460,761 | 39 |
| 2024 | £408,000 | £433,788 | 33 |
| 2023 | £415,000 | £455,984 | 59 |
| 2022 | £334,000 | £391,653 | 64 |
| 2021 | £445,000 | £563,427 | 63 |
| 2020 | £401,000 | £520,306 | 53 |
| 2019 | £392,500 | £514,474 | 46 |
| 2018 | £375,000 | £499,882 | 43 |
| 2017 | £350,000 | £477,365 | 47 |
| 2016 | £350,000 | £489,653 | 46 |
| 2015 | £243,700 | £344,348 | 72 |
| 2014 | £360,000 | £510,723 | 90 |
| 2013 | £246,400 | £354,545 | 33 |
| 2012 | £351,200 | £516,923 | 30 |
| 2011 | £262,200 | £395,821 | 28 |
| 2010 | £270,000 | £423,430 | 33 |
| 2009 | £304,500 | £489,486 | 28 |
| 2008 | £230,000 | £377,019 | 32 |
| 2007 | £245,000 | £415,588 | 63 |
| 2006 | £235,000 | £407,930 | 47 |
| 2005 | £237,000 | £421,764 | 62 |
| 2004 | £226,000 | £410,460 | 58 |
| 2003 | £180,000 | £331,604 | 39 |
| 2002 | £182,400 | £343,184 | 44 |
| 2001 | £165,000 | £317,204 | 45 |
| 2000 | £138,200 | £271,218 | 52 |
| 1999 | £117,500 | £234,171 | 58 |
| 1998 | £134,200 | £270,892 | 48 |
| 1997 | £86,200 | £176,779 | 60 |
| 1996 | £90,000 | £189,806 | 53 |
| 1995 | £73,000 | £158,691 | 39 |
In cash terms the typical AL9 5 home went from £73,000 in 1995 to £280,000 in 2026, roughly 3.8 times the price. Adjusted for inflation it still comes to a real rise of roughly 76%, so homes here got dearer in substance, not only in cash. In inflation-adjusted terms the high-water mark was 2021. The market now sits about 50% below it, so a peak-time purchase has yet to recover its real value.
Year-on-year change in the AL9 5 median
Each bar is the change on the year before, in cash. The zero line is the boundary between rising and falling.
The strongest year on record here is 1998 (+55.7% on the year before); the weakest, 2026 (−37.8%). Single-year swings like these are why the annualised table below matters more than any one year's headline.
What AL9 5 has returned, per year
| Period | Cash, per year | Real terms, per year |
|---|---|---|
| 1 years (since 2025) | −37.8% | −39.2% |
| 5 years (since 2021) | −8.8% | −13.1% |
| 10 years (since 2016) | −2.2% | −5.4% |
| 20 years (since 2006) | +0.9% | −1.9% |
The table annualises median growth over each period, with the real column deflated by ONS CPIH. Smoothing hides the cycle (see the chart above for it), and none of this forecasts: it is the record.
The turnover behind the prices
Sales per year, counted
Annual recorded sales. The post-2008 trough is the financial crisis; treat the final bar as provisional while registrations catch up.
The register shows 15 AL9 5 sales across the most recent twelve months of data. Turnover has held fairly steady across the cycle: about 42 sales a year recently, against 51 a year before 2008. Price without volume misleads: a median built on few sales jumps around, and one street can tilt it. Keep in mind too that the latest year is still filling in, since sales reach the register weeks or months after completion.
The shape of the AL9 5 market
Only 15 sales completed here in the last twelve months of data, which makes AL9 5 a thin market. Each figure rests on few transactions, so single streets can swing the median and the charts deserve a sceptical squint. The record here is jumpy: year-on-year moves of ten per cent or more are common in the chart above, mostly a function of which homes happened to sell rather than the market lurching. Within AL9, this sector trades 48% below the district median: one of its district's cheaper corners.
What tenants pay around AL9 5
AL9 5 falls under Welwyn Hatfield, where the ONS puts the average private rent at £1,482 a month (May 2026 figures). Size sets most of the rent: one-beds average £1,041 a month here against £2,294 for four or more bedrooms.
Average monthly rent by size, Welwyn Hatfield
ONS Price Index of Private Rents, May 2026.
£1,482 a month is £17,784 a year, which against the £280,000 median sold price makes a gross yield of 6.4%. Gross means before letting costs, voids, maintenance and tax: treat it as a ceiling. The ONS publishes rents by local authority, so neighbouring districts under the same authority share these numbers.
AL9 5 (Brookmans Park): the questions that come up
Is AL9 5 (Brookmans Park) a good place to buy a house?
How much did a house sell for in AL9 5 (Brookmans Park)?
Are property prices falling in AL9 5 (Brookmans Park)?
Will AL9 5 prices rise from here?
Nobody can tell you that, and this page will not pretend to. What the record shows: the median is down 37% over five years in cash but down 50% after inflation. If you are weighing a purchase, read the volume chart alongside the price one, and remember that every figure here is a completed sale, lagged by the weeks it takes the Land Registry to register it.
On the market in AL9 today
This is what you could actually buy today: 87 homes currently on the market from 10 agents publishing to HomesIndex.
These cover the whole AL9 district, not just AL9 5: live asking prices are collected per district.
Of everything listed here, 10% asks less than the sold record of comparable homes. Every listing is measured against recent recorded sales of similar nearby homes.
- Alderman Close, Welham Green, AL9, Welham Green
- Brookmans Park, Hatfield, Hertfordshire, Hatfield
- The Holdings, Hatfield, Hertfordshire, Hatfield
"Under comparable sales" compares each asking price with what similar homes nearby actually sold for. It is a starting point for a conversation, not a valuation. Always look at the home itself.
See every AL9 home for sale on the map →
Live asking prices from estate agents who publish a feed to HomesIndex, refreshed every Monday and Thursday: a sample of the market, not every home for sale. Asking prices are not sale prices.
Bedroom by bedroom: AL prices by size
The Land Registry record, split by size: what each kind of home actually sold for across the AL area. How much a size step costs is a local fact: the third-bedroom premium runs from about a quarter to nearly four fifths depending on the area, and national rules of thumb miss it.
| Type | 1 bed | 2 bed | 3 bed | 4 bed | 5 bed |
|---|---|---|---|---|---|
| Detached | — | £605,000 | £792,500 (+31%) | £1,160,000 (+46%) | £1,685,000 (+45%) |
| Semi-detached | £397,500 | £490,000 (+23%) | £640,000 (+31%) | £865,000 (+35%) | £1,150,000 (+33%) |
| Terraced | £375,000 | £440,000 (+17%) | £506,250 (+15%) | £739,000 (+46%) | £950,000 (+29%) |
| Flat | £250,000 | £335,000 (+34%) | £552,500 (+65%) | — | — |
Medians of recorded sales over the last four years, by built form and bedroom count. Sold homes carry no advertised bedroom count, so sizes are estimated from their EPC records; a small number of homes will sit one size out. Sizes with too few homes to be meaningful are left blank.
The risers and the fallers
The spread across the AL area is the point: the same five years treated these districts very differently.
Five-year change in the median, AL area districts
The biggest risers and fallers in cash terms; every row links to that district's report.
Other sectors in AL9
Prices can differ sharply between two sectors a few minutes' walk apart. The rest of AL9, each linking to its own report:
| Sector | Median (latest) | Sales that year |
|---|---|---|
| AL9 6 | £925,000 | 1 |
| AL9 7 | £615,000 | 37 |
Zoom out to the full AL9 district report for the type split, monthly volumes and how AL9 compares with its neighbours.
Thinking of selling in AL9 5? Get a rough value first
Ground the asking price in real sold prices first. The average prices map gives a rough value in a minute: start at AL9 5's shading and zoom to the sold homes on the street itself. Agents work from this same Land Registry record when they value; this page puts it in front of you before they arrive.
For local estate agents: each district report carries one featured-agent spot, free while founding places last. Claim AL9 5.
Go deeper
The AI answers from the same Land Registry data this report is built on, already scoped to AL9 5. Free after a one click sign in.
See every individual AL9 5 sale on the live map, mapped to the exact address, or zoom the average prices map from neighbourhood shading down to single homes. The report tool writes a custom answer to a specific question, and the mortgage and rent calculator on any sale runs the numbers on a real purchase.
How this page is made: the statistics are computed from HM Land Registry Price Paid Data (Crown copyright, OGL v3.0), geocoded to address level; inflation adjustment uses the ONS CPIH index; rents are the ONS Price Index of Private Rents at local-authority level. Medians of recorded sales, not valuations. Nothing on this page is financial advice.