According to data from HM Land Registry, Allt Ddu, Machynlleth sits on a plot of 46,653 m².

We have plot size data on 2 out of 3 other houses in the postcode and Allt Ddu, Machynlleth sits on the 2nd largest plot.

Allt Ddu, Machynlleth has an Energy Performance Rating (EPC) of D. This is based on the most recent assessment, dated 26 May 2022.

The property is not connected to mains gas and has partial double glazing. It is heated using a boiler and radiators (oil).

According to HM Land Registry, Allt Ddu, Machynlleth was last sold on 4th October 2019 for £116,333 and was recorded as a freehold house.

The property has had 2 sales since 1995.

Since October 2019, the market for similar properties has risen by 22.7%.

• Sold Oct 2019£116,333
• Sold Mar 2014£52,500

According to the Land Registry and our network of Estate Agents, there have been 622 property sales within 7.2 kilometres of Allt Ddu, Machynlleth since 2009.

The most recent example is Hen Capel, Machynlleth, SY20 8TN, a freehold house which sold for £145,000 on the 16th December 2025.

Read more about house prices in SY20.

• Sold Dec 2025£145,000 | 3 Bed HouseHen Capel, Machynlleth, SY20 8TNHen Capel, Machynlleth, SY20 8TN
• Sold Sep 2025£173,000 | 3 Bed House5, Glynderwen, Machynlleth, SY20 8TW5, Glynderwen, Machynlleth, SY20 8TW
• Sold Aug 2025£500,000 | 4 Bed HouseGarreg, Machynlleth, SY20 8SSGarreg, Machynlleth, SY20 8SS
• Sold Dec 2023£407,500 | 4 Bed HouseCoed Y Garreg, Machynlleth, SY20 8SSCoed Y Garreg, Machynlleth, SY20 8SS
• Sold Oct 2023£152,500 | 3 Bed HouseRose Cottage, Machynlleth, SY20 8SSRose Cottage, Machynlleth, SY20 8SS
• Sold Mar 2023£770,000 | 5 Bed HouseTy Coch, Machynlleth, SY20 8PZTy Coch, Machynlleth, SY20 8PZ
• Sold Dec 2021£134,500 | 2 Bed HouseAvondale, Machynlleth, SY20 8TNAvondale, Machynlleth, SY20 8TN
• Sold Jun 2020£56,500 | 4 Bed HouseBrwyno Farm, Machynlleth, SY20 8TFBrwyno Farm, Machynlleth, SY20 8TF
• Sold May 2018£157,000 | 3 Bed House1, Glynderwen, Machynlleth, SY20 8TW1, Glynderwen, Machynlleth, SY20 8TW
• Sold Sep 2017£94,000 | 2 Bed HouseBrynderwen, Machynlleth, SY20 8TNBrynderwen, Machynlleth, SY20 8TN
• Sold Sep 2017£119,813 | 3 Bed HouseOld Chapel, Machynlleth, SY20 8SSOld Chapel, Machynlleth, SY20 8SS
• Sold Jul 2017£122,500 | 3 Bed House7, Glynderwen, Machynlleth, SY20 8TW7, Glynderwen, Machynlleth, SY20 8TW
• Sold Jun 2017£85,000 | 3 Bed HouseIsfryn, Machynlleth, SY20 8TNIsfryn, Machynlleth, SY20 8TN
• Sold Jun 2017£525,000 | 5 Bed HouseCaerhedyn, Machynlleth, SY20 8PYCaerhedyn, Machynlleth, SY20 8PY
• Sold Nov 2016£140,000 | 3 Bed HouseBryn Dyfi, Machynlleth, SY20 8TNBryn Dyfi, Machynlleth, SY20 8TN
• Sold Nov 2016£170,000 | 3 Bed HouseCelyn, Machynlleth, SY20 8SRCelyn, Machynlleth, SY20 8SR
• Sold Jul 2014£89,000 | 3 Bed House4, Glynderwen, Machynlleth, SY20 8TW4, Glynderwen, Machynlleth, SY20 8TW
• Sold Apr 2014£113,500 | 3 Bed House8, Glynderwen, Machynlleth, SY20 8TW8, Glynderwen, Machynlleth, SY20 8TW
• Sold Feb 2012£77,000 | 3 Bed HouseBryncoed, Machynlleth, SY20 8TSBryncoed, Machynlleth, SY20 8TS
• Sold Dec 2009£90,000 | 2 Bed HouseGwelafon, Machynlleth, SY20 8TNGwelafon, Machynlleth, SY20 8TN

Derwenlas, Machynlleth, SY20 has a total of 45 addresses. According to our analysis of all the public data, Allt Ddu, Machynlleth is the 16th largest and the 37th most expensive property on the street.

When compared to the postcode district it is £105k less expensive than the average property in SY20.

• Dovey Junction

  |

  1.7 km away
• Machynlleth

  |

  4.9 km away
• Penhelig

  |

  9.3 km away

According to data from the Environment Agency, the flood risk in this area is considered to be Very Low.