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Datchworth market report SG3, Knebworth
The standing SG3 (Datchworth) property market report, rebuilt from the full public record every month. The raw material for this page is 4,537 HM Land Registry entries for SG3 (Knebworth), going back to 1995: each an actual purchase at an actual price. Rents come from the ONS. Valuations, estimates and asking prices appear nowhere in it.
Covers registered sales to August 2026 and ONS rents for May 2026. Refreshed monthly as new sales reach the register. Page updated 19 October 2026.
In short: the typical home in SG3 (Knebworth) sold for £462,500 in 2026, the median of 57 registered sales, down 2% on five years earlier. The mean was £502,500, and by floor area homes here have averaged about £5,110 per square metre over the last five years. The figures cover 4,537 sales recorded by HM Land Registry since 1995 and refresh with each monthly release: completed sale prices, not valuations or asking prices.
SG3 is the postcode district covering Knebworth, Datchworth, Woolmer Green in Knebworth. Districts are a practical way to slice a market: small enough to mean something locally, big enough to have a steady flow of sales to measure.
Where SG3 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.
What buyers actually paid in SG3
In the SG3 property market, the 2026 median sale price is £462,500, from 57 registered sales; the mean, the "average house price" most sites quote, is £502,500, sitting somewhat above it, as happens wherever a market carries an expensive tail.
Price per square metre in SG3
Per square metre, SG3 homes have averaged around £5,110 over the last five years of sales. The floor areas behind the figure come from Energy Performance Certificates, and the by-the-metre view is the fair comparison across home sizes.
Set against the £285,000 England and Wales median, SG3 sits 62% above the national market.
SG3's median sold price, 1995 to 2026
The median as recorded at the time, and each year restated in today's money (ONS CPIH), the sharper test of whether homes really got dearer. Hover for the year-by-year figures; click a legend entry to isolate a series.
See this chart as a table
| Year | Median (cash) | Median (today's £) | Sales |
|---|---|---|---|
| 2026 | £462,500 | £462,500 | 57 |
| 2025 | £470,000 | £481,239 | 145 |
| 2024 | £450,000 | £478,442 | 125 |
| 2023 | £420,000 | £461,477 | 75 |
| 2022 | £443,800 | £520,406 | 110 |
| 2021 | £470,000 | £595,081 | 176 |
| 2020 | £471,000 | £611,132 | 122 |
| 2019 | £415,000 | £543,966 | 113 |
| 2018 | £420,000 | £559,868 | 101 |
| 2017 | £385,000 | £525,101 | 117 |
| 2016 | £397,500 | £556,106 | 134 |
| 2015 | £340,000 | £480,420 | 117 |
| 2014 | £311,500 | £441,917 | 140 |
| 2013 | £280,000 | £402,892 | 100 |
| 2012 | £273,200 | £402,116 | 110 |
| 2011 | £237,000 | £357,779 | 86 |
| 2010 | £280,500 | £439,896 | 98 |
| 2009 | £250,000 | £401,877 | 85 |
| 2008 | £248,000 | £406,524 | 81 |
| 2007 | £250,000 | £424,070 | 211 |
| 2006 | £230,000 | £399,251 | 183 |
| 2005 | £232,500 | £413,756 | 158 |
| 2004 | £212,500 | £385,942 | 159 |
| 2003 | £200,000 | £368,449 | 179 |
| 2002 | £163,500 | £307,624 | 189 |
| 2001 | £135,000 | £259,531 | 181 |
| 2000 | £121,500 | £238,444 | 198 |
| 1999 | £105,000 | £209,260 | 215 |
| 1998 | £100,000 | £201,857 | 207 |
| 1997 | £75,000 | £153,810 | 243 |
| 1996 | £86,000 | £181,370 | 185 |
| 1995 | £77,000 | £167,386 | 137 |
In cash terms the typical SG3 home went from £77,000 in 1995 to £462,500 in 2026, roughly 6 times the price. Even after inflation that is a real rise of about 176%: homes here genuinely became dearer, not merely more expensive on paper. In inflation-adjusted terms the high-water mark was 2020. The market now sits about 24% below it, so a peak-time purchase has yet to recover its real value.
Year-on-year change in the SG3 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 (+33.3% on the year before); the weakest, 2011 (−15.5%). Single-year swings like these are why the annualised table below matters more than any one year's headline.
The long view: annualised growth
| Period | Cash, per year | Real terms, per year |
|---|---|---|
| 1 year (since 2025) | −1.6% | −3.9% |
| 5 years (since 2021) | −0.3% | −4.9% |
| 6 years (since 2020) | −0.3% | −4.5% |
| 10 years (since 2016) | +1.5% | −1.8% |
| 20 years (since 2006) | +3.6% | +0.7% |
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 terraced homes dominate the record here, 29% of the typed total. A detached home currently trades at £823,200 against £252,500 for a flat, 3.3 times the price.
Median by property type, SG3
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 | £823,200 | 12 | 1,152 |
| Semi-detached | £562,500 | 14 | 1,172 |
| Terraced | £400,000 | 17 | 1,298 |
| Flats | £252,500 | 14 | 915 |
Sales activity in SG3
The year-by-year sales count
Each bar is a year's recorded sales. 2008's dip is the financial crisis, and the newest bar always grows for a while as late registrations arrive.
The last five years, month by month
Monthly registrations. The sawtooth is seasonal; the register runs weeks behind completions at the right-hand edge.
SG3 recorded 95 sales in the last twelve months of data. Like most of England and Wales, turnover never fully recovered from 2008: the market here averaged 182 sales a year before the financial crisis and 102 a year over the last five. Watch the volume as closely as the price. Thin years make jumpy medians, where one street's sales can move the figure, and the newest year is always incomplete because registrations trail completions by weeks or months.
How SG3 trades
This is a thin market: 95 sales in the last twelve months of data. With that few transactions, one street selling well (or one block of cheap transfers) can move the median, so read the year lines as a range rather than a verdict. Among the 19 measurable districts of its area, SG3 ranks 4 by median price: firmly in the dearer tier.
What homes rent for around SG3
The local authority for SG3 is North Hertfordshire, and its ONS average private rent currently stands at £1,421 a month (May 2026 figures). A one-bed averages £1,013 a month here and a four-or-more-bed £2,218, so size does most of the work in setting the rent.
Average monthly rent by size, North Hertfordshire
ONS Price Index of Private Rents, May 2026.
£1,421 a month is £17,052 a year, which against the £462,500 median sold price makes a gross yield of 3.7%. 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.
Common questions on SG3 (Datchworth)
Is SG3 (Datchworth) a good place to buy a house?
How much did a house sell for in SG3 (Datchworth)?
Are property prices falling in SG3 (Datchworth)?
Are SG3 prices heading up or down?
The record answers a different question than "what happens next": the median is roughly flat over five years in cash but down 22% after inflation. Put the volume chart beside the price chart before drawing conclusions, and allow for the register's lag behind actual completions.
On the market in SG3 today
Everything above is what homes in SG3 sold for. This is what you could actually buy today: 49 homes currently on the market from 6 agents publishing to HomesIndex, at a typical asking price 6% above the SG3 median sold price.
Set against 95 registered sales in the last twelve months, the 49 homes on the market here are roughly 6 months of supply at last year's pace, and more in reality, since only agents who publish to HomesIndex are counted.
12% of what is on the market here is asking below what comparable homes actually sold for. Each listing is compared with recent recorded sales of similar homes nearby.
- Wadnall Way, Knebworth, Hertfordshire
- Stevenage Road, Knebworth, SG3, Knebworth
- Kerr Close, Knebworth, SG3, Knebworth
"Under comparable sales" means the asking price sits below what similar homes nearby actually fetched. Treat it as the start of a conversation, never a valuation, and always view the home.
See every SG3 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.
SG3: the homes on offer and the homes that go
Terraced homes are 23% of what sold in SG3 over 2024 and 2025 but only 0% of what is listed now: they sell, and there are few to choose from, so a good one is unlikely to hang about.
| Type | Share of homes for sale now | Share of sales, 2024 and 2025 |
|---|---|---|
| Detached | 38% | 23% |
| Semi-detached | 31% | 33% |
| Terraced | 0% | 23% |
| Flats | 31% | 22% |
The listing shares count homes published to HomesIndex by agents today; the sales shares count HM Land Registry registrations. Listings typed only as "house", "bungalow" or similar, which the register would file under one of the four forms, are excluded from the listing side (6 of them here).
The SG3 sales calendar
Take the 631 SG3 sales dated 2021 to 2025 and sort them by month: June completions lead with 10.6% of the total, April trails with 5.9%. That is a marked seasonal rhythm. A sale completes weeks after it is agreed, so the busy month reflects deals struck earlier in the year; a seller who wants competition should be on the market ahead of it.
Sales by month, 2021 to 2025
| Month | Sales | Share |
|---|---|---|
| January | 46 | 7.3% |
| February | 47 | 7.4% |
| March | 64 | 10.1% |
| April | 37 | 5.9% |
| May | 58 | 9.2% |
| June | 67 | 10.6% |
| July | 41 | 6.5% |
| August | 59 | 9.4% |
| September | 54 | 8.6% |
| October | 57 | 9.0% |
| November | 46 | 7.3% |
| December | 55 | 8.7% |
Moving up a bedroom in SG: the cost
The Land Registry record, split by size: what each kind of home actually sold for across the SG area. 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 | £376,000 | £450,000 (+20%) | £505,000 (+12%) | £595,000 (+18%) | £739,950 (+24%) |
| Semi-detached | £312,500 | £364,000 (+16%) | £418,000 (+15%) | £500,000 (+20%) | £635,000 (+27%) |
| Terraced | £238,000 | £318,000 (+34%) | £355,000 (+12%) | £430,000 (+21%) | £557,500 (+30%) |
| Flat | £183,500 | £245,000 (+34%) | £303,800 (+24%) | £438,500 (+44%) | £506,250 (+15%) |
Built from the last four years of recorded sales by form and bedroom count. Bedroom counts are estimated from EPC records (the register carries none), so expect a small number of homes one size adrift. Where too few homes exist to say anything meaningful, the cell is blank.
The risers and the fallers
SG3 ranks 17 of 19 in the SG 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.
Five-year change in the median, SG area districts
The districts that gained and lost most in cash terms, each row linking through to its own report.
Inside SG3, sector by sector
Postcode sectors are the next slice down, each a group of streets with its own market report. Prices can differ sharply between two sectors a few minutes' walk apart.
| Sector | Median (latest) | Sales that year |
|---|---|---|
| SG3 6 | £462,500 | 57 |
How SG3 compares nearby
Same city, different markets. The neighbouring districts of the SG area, dearest first:
| District | Median | 5-year |
|---|---|---|
| SG10 | £765,000 | +13% |
| SG4 | £480,000 | +9% |
| SG14 | £475,000 | +14% |
| SG3 (this report) | £462,500 | -2% |
| SG9 | £442,500 | -1% |
| SG12 | £440,000 | +13% |
| SG13 | £430,000 | +1% |
| SG5 | £426,000 | +3% |
| SG11 | £415,000 | -24% |
| SG17 | £412,500 | +5% |
| SG8 | £395,000 | -1% |
| SG6 | £390,000 | +17% |
| SG7 | £375,000 | -6% |
| SG16 | £371,200 | +0% |
| SG18 | £370,000 | +8% |
| SG15 | £356,500 | +14% |
| SG1 | £350,000 | +14% |
| SG2 | £350,000 | +10% |
| SG19 | £342,000 | +3% |
Before you sell in SG3: what the record supports
Start from what homes here actually sold for, not an estimate. Before booking a house valuation or flat valuation in SG3, use the average prices map for a rough value: zoom from SG3's shading down to the sold homes on your own street. The figures above are every recorded SG3 sale; agents price with this same Land Registry record, and now you have it too.
Dig further
The AI answers from the same Land Registry data this report is built on, already scoped to SG3. Free after a one click sign in.
The live map plots every individual SG3 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.