Local market reports › AL area › AL9
Brookmans Park market report AL9, Hatfield
The standing AL9 (Brookmans Park) property market report, rebuilt from the full public record every month. This page is built from the public record and nothing else: 5,404 completed sales registered with HM Land Registry in AL9 (Hatfield) since 1995, plus current ONS rental figures. There are no valuations, estimates or asking prices in it.
Sales data to July 2026. Rents: ONS, May 2026. Regenerated with every monthly data refresh.
In short: a typical AL9 (Hatfield) home changed hands for £540,000 in 2026 (median of 53 registered sales, down 7% on five years earlier), with the mean at £685,200, and by floor area homes here have averaged about £5,660 per square metre over the last five years. Source: 5,404 completed sales on the HM Land Registry record since 1995, updated with each monthly release. No valuations, no asking prices.
The postcode district AL9 covering Hatfield (Old Hatfield), Brookmans Park, Essendon sits in Hatfield. A district is the workhorse unit for reading a market: local enough to be meaningful, busy enough that the medians rest on a steady flow of sales.
Where AL9 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
Take the 53 registered 2026 sales in AL9 and the middle price, the median, is £540,000. The mean lands at £685,200, a long way above it, which tells you a few very expensive sales are pulling the average up.
What a square metre costs in AL9
Measured by floor area, the last five years of AL9 sales average about £5,660 per square metre. Price per square metre is the fair way to compare a one-bed flat with a four-bed house, and it comes from the Energy Performance Certificate on each sold home.
For scale: the England and Wales median is £285,000, so AL9 trades 89% above the country as a whole.
AL9's median sold price, 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 | £540,000 | £540,000 | 53 |
| 2025 | £595,200 | £609,433 | 130 |
| 2024 | £554,000 | £589,016 | 112 |
| 2023 | £562,500 | £618,050 | 136 |
| 2022 | £550,000 | £644,938 | 167 |
| 2021 | £582,000 | £736,887 | 219 |
| 2020 | £525,000 | £681,198 | 135 |
| 2019 | £555,000 | £727,472 | 150 |
| 2018 | £491,800 | £655,579 | 156 |
| 2017 | £532,500 | £726,277 | 145 |
| 2016 | £506,000 | £707,899 | 172 |
| 2015 | £365,000 | £515,745 | 192 |
| 2014 | £422,500 | £599,390 | 256 |
| 2013 | £393,000 | £565,488 | 148 |
| 2012 | £385,000 | £566,672 | 117 |
| 2011 | £340,000 | £513,269 | 141 |
| 2010 | £374,500 | £587,312 | 132 |
| 2009 | £390,000 | £626,928 | 127 |
| 2008 | £307,500 | £504,057 | 122 |
| 2007 | £293,800 | £498,367 | 204 |
| 2006 | £250,000 | £433,968 | 202 |
| 2005 | £240,000 | £427,103 | 169 |
| 2004 | £250,000 | £454,049 | 213 |
| 2003 | £225,000 | £414,505 | 188 |
| 2002 | £221,000 | £415,810 | 224 |
| 2001 | £189,500 | £364,304 | 205 |
| 2000 | £177,500 | £348,344 | 193 |
| 1999 | £135,000 | £269,048 | 217 |
| 1998 | £130,000 | £262,414 | 215 |
| 1997 | £102,000 | £209,181 | 205 |
| 1996 | £105,000 | £221,440 | 207 |
| 1995 | £92,000 | £199,994 | 152 |
In cash terms the typical AL9 home went from £92,000 in 1995 to £540,000 in 2026, roughly 6 times the price. Inflation explains only part of it: in today's money the rise is still about 170%, a genuine increase in what a home here costs. The real-terms peak came in 2021, and today's median remains roughly 27% under it: a 2021 buyer is still waiting to get that price back in today's money.
Year-on-year change in the AL9 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 2016 (+38.6% on the year before); the weakest, 2015 (−13.6%). Single-year swings like these are why the annualised table below matters more than any one year's headline.
Annualised returns
| Period | Cash, per year | Real terms, per year |
|---|---|---|
| 1 years (since 2025) | −9.3% | −11.4% |
| 5 years (since 2021) | −1.5% | −6.0% |
| 10 years (since 2016) | +0.7% | −2.7% |
| 20 years (since 2006) | +3.9% | +1.1% |
Compound annual growth of the median sold price; the real column deflates by ONS CPIH. Annualised figures smooth the cycle (the chart above shows the cycle), and past growth is a record, not a forecast.
Detached, semi, terraced, flat: four markets in one
A single median hides the split beneath it. Sales of detached houses dominate the record here, 31% of the typed total. A detached home currently trades at £955,000 against £245,000 for a flat, 3.9 times the price.
Median by property type, AL9
One line per type, years with too few sales omitted. Hover for the year's figures; click a legend entry to isolate a type.
| Type | Median (2026) | Sales that year | All-time sales |
|---|---|---|---|
| Detached | £955,000 | 13 | 1,676 |
| Semi-detached | £615,000 | 17 | 1,339 |
| Terraced | £487,500 | 12 | 1,406 |
| Flats | £245,000 | 11 | 983 |
Sales activity in AL9
Sales per year, counted
Recorded sales per year. The dip after 2008 is the financial crisis; the last bar is still filling in as recent sales get registered.
The monthly pulse, last five years
Sales as they reached the register each month. Expect the seasonal sawtooth, and discount the newest months while late entries land.
AL9 recorded 104 sales in the last twelve months of data. Like most of England and Wales, turnover never fully recovered from 2008: the market here averaged 200 sales a year before the financial crisis and 120 a year over the last five. 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.
What kind of market AL9 is
Only 104 sales completed here in the last twelve months of data, which makes AL9 a thin market. Each figure rests on few transactions, so single streets can swing the median and the charts deserve a sceptical squint.
Rents around AL9
AL9 falls under Welwyn Hatfield, where the ONS puts the average private rent at £1,482 a month (May 2026 figures). The spread runs from £1,041 a month for a typical one-bed to £2,294 at four-plus bedrooms, which is size doing most of the pricing.
Average monthly rent by size, Welwyn Hatfield
ONS Price Index of Private Rents, May 2026.
Set against the £540,000 median sold price, £1,482 a month is £17,784 a year, a gross yield of 3.3%: gross, before letting costs, voids, maintenance and tax, so a ceiling rather than a promise. Rents are published at local-authority level, so nearby districts in the same authority share these figures.
AL9 (Brookmans Park): the questions that come up
Are property prices falling in AL9 (Brookmans Park)?
Is AL9 (Brookmans Park) a good place to buy a house?
How much did a house sell for in AL9 (Brookmans Park)?
Are AL9 prices heading up or down?
Prediction is not this page's business. Its business is the record, which says: the median is down 7% over five years in cash but down 27% after inflation. Read the volume chart with the price chart before acting on either, remembering that registrations trail the deals themselves by weeks.
AL9's current homes for sale
Everything above is what homes in AL9 sold for. The live side of the market holds 87 homes at the moment, listed by 10 agents publishing to HomesIndex, at a typical asking price 118% above the AL9 median sold price.
10% of current listings sit under the prices comparable homes actually fetched. The comparison behind each listing uses recent recorded sales of similar homes close by.
- 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 →
Refreshed every Monday and Thursday from agents' own feeds to HomesIndex, so a sample of the market rather than all of it. An asking price remains an ask, not a sale.
What another bedroom costs in AL
What homes of each size actually sold for across the AL area, from the Land Registry record. The jump between sizes is local: in some areas a third bedroom adds a quarter to the price, in others nearly four fifths, so a national rule of thumb will mislead you here.
| 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
AL9 ranks 10 of 10 in the AL area on five-year growth. The gap between the top and bottom of this chart is the difference between buying well and buying badly in the same city.
Winners and losers across the AL area, five years
The districts that gained and lost most in cash terms, each row linking through to its own report.
Inside AL9, sector by sector
Below district level sit the sectors, street groups with reports of their own, and the gaps between neighbouring ones can be sharp.
| Sector | Median (latest) | Sales that year |
|---|---|---|
| AL9 5 | £280,000 | 15 |
| AL9 6 | £925,000 | 1 |
| AL9 7 | £615,000 | 37 |
How AL9 compares nearby
Same city, different markets. The neighbouring districts of the AL area, dearest first:
| District | Median | 5-year |
|---|---|---|
| AL5 | £725,000 | +2% |
| AL6 | £705,000 | -3% |
| AL4 | £638,000 | +9% |
| AL3 | £623,800 | +5% |
| AL8 | £560,000 | +27% |
| AL1 | £550,000 | +4% |
| AL2 | £545,000 | +5% |
| AL9 (this report) | £540,000 | -7% |
| AL7 | £403,000 | +9% |
| AL10 | £365,000 | +8% |
Selling a home in AL9? Price it on the evidence
The sold record beats any estimate as a starting point. Before a house valuation or flat valuation in AL9, open the average prices map and zoom from the AL9 shading down to the sold homes on your own street. Every recorded AL9 sale is on this page; the same Land Registry record is what agents price from, and it is now in your hands.
For local estate agents: each district report carries one featured-agent spot, free while founding places last. Claim AL9.
Keep digging
Answers come from the same Land Registry data behind this report, and the AI knows you are asking about AL9. Free, with a one click sign in.
The live map plots every individual AL9 sale at its exact address, and the average prices map zooms from neighbourhood shading to single homes. For a specific question, the report tool writes a custom answer, and any sale's mortgage and rent calculator runs the numbers on a real purchase.
Method, briefly: HM Land Registry Price Paid Data (Crown copyright, OGL v3.0) supplies every sale, geocoded to address level; CPIH from the ONS restates prices in today's money; ONS local-authority figures supply the rents. Medians of real sales, not valuations. No part of this page is financial advice.