House Extensions in Chelmsford

Extending a Victorian or Edwardian terrace near the centre

Terraces around Old Moulsham and the streets off New London Road were built long and narrow, with a rear closet wing, a small kitchen at the back and a side return that does very little other than collect leaves. Filling that side return is usually the single biggest gain available in these houses. It turns a dark galley kitchen into a room the width of the plot, and a roof light over the old boundary line brings daylight deep into the middle of the ground floor. Because these houses sit in or close to conservation areas, we keep the front elevation untouched and put the work at the back where it belongs. Brick matching matters here, and so does getting the new roof to meet the original slate cleanly. We handle building control, structural steels and the making good afterwards as one job.

Rear and double storey extensions on the 1930s semis

Moulsham, Springfield and Rainsford are full of bay fronted semis with generous rear gardens and, crucially, a gap to the boundary on one side. That gap is what makes these houses so extendable. A modest rear extension gives an open kitchen and dining space, while a two storey extension over the side can add a proper fourth bedroom and a family bathroom without eating the garden. Solid or early cavity walls, shallow foundations and old drain runs are the usual things that need checking before anything is drawn, and we would rather find the manhole in week one than week six. If headroom upstairs is what you are after rather than ground floor space, a loft conversion often gets you there for less disruption.

Post-war and modern estate homes

Great Baddow and Galleywood have post-war family houses with straightforward rectangular footprints, which makes them well suited to single storey rear extensions built under permitted development. Newer estates at Chelmer Village, Beaulieu Park and Springfield Lyons are different again. Plots are tighter, garages are often integral, and estate covenants or an original developer's design code can restrict what goes where. Converting and extending over an integral garage is a common route on these homes, adding a bedroom or home office above and a utility below. We check the title and the covenant position early so nobody is surprised.

Planning, neighbours and what drives the cost

Chelmsford City Council handles planning and building control, and much of what we build falls under permitted development or a lawful development certificate rather than a full application. Conservation area status around Old Moulsham and New London Road changes that, and terraces and semis almost always bring a party wall agreement with the neighbour next door. Cost is driven by ground conditions, the amount of structural steel, how far services have to move, glazing specification and the level of finish, not by floor area alone. As an established firm with 25+ years behind it, we price the whole thing honestly and keep one accountable in-house team on site, so the bricklayers, plumbers, electricians and finishers all answer to the same people.

You can read more about our extension service, see the rest of the areas we cover in Chelmsford, or contact us for a free no-obligation quote. We are fully insured and our workmanship is guaranteed.