Areas we cover in Hertfordshire

• Hoddesdon and BroxbournePostcode districts EN10EN11

  Plans for extensions, lofts and garage conversions in Hoddesdon, Broxbourne, Wormley and Turnford, a mix of interwar, post-war and older homes near the Lea Valley.

• Cheshunt and Waltham CrossPostcode districts EN7EN8

  Plans for extensions, lofts and garage conversions in Cheshunt, Waltham Cross, Goffs Oak and Flamstead End, from Victorian terraces to large detached houses on former nursery land.

• Hatfield and Welwyn Garden CityPostcode districts AL7AL8AL10

  Plans for extensions, lofts and garage conversions in Welwyn Garden City and Hatfield, where garden city layouts, an estate management scheme and post-war new town homes each bring their own checks.

• StevenagePostcode districts SG1SG2

  Plans for extensions, lofts and garage conversions in Stevenage, Britain's first post-war new town, with its neighbourhood layouts, repeated house types and Old Town streets.

• RoystonPostcode districts SG8

  Plans for extensions, lofts and garage conversions in Royston and nearby villages, a market town of flint, brick and Victorian terraces on the Hertfordshire and Cambridgeshire border.

• HertfordPostcode districts SG13SG14

  Plans for extensions, lofts and garage conversions in Hertford, Bengeo and Hertford Heath, a county town with many listed buildings, conservation areas and a wide mix of house types.

• WarePostcode districts SG12

  Plans for extensions, lofts and garage conversions in Ware, Stanstead Abbotts and Great Amwell, a river town of Victorian terraces, former maltings and long narrow plots.

Not listed? Send your enquiry anyway. We only pass it to an architectural designer who covers your postcode, if there is one.