Oxford Damp SpecialistsDamp diagnosed before it is treated01865 537413
  1. Home
  2. Areas
  3. Bicester

Damp proofing in Bicester

For owners, buyers, landlords and tenants across Bicester, Oxford Damp Specialists surveys and repairs damp, looking for the cause first: a limestone house in the conservation area, a home near the Bure after a wet winter, or a new build in Kingsmere or Elmsbrook. We fix that before anything else.

Ring 01865 537413

Arrange a damp survey in Bicester

Postcode, phone number and a word about the problem. We call back, ask a few questions, and book a visit if it needs one.

Enquiries are shared only with the team who quotes for and does the work. Used for this enquiry only (privacy notice).

  • Postcodes OX26, OX27
  • Cherwell District Council
  • Limestone old town, Garden Town estates

How should damp be handled in Bicester's limestone and listed houses?

Gently, and with materials that let the walls dry: older Bicester houses are built of stone, brick and timber, and many are listed. Cherwell first designated the town conservation area in April 1969 and reviewed it in August 2011. It covers about 28.8 hectares and includes 111 listed buildings. The local history society town trail picks out St Edburg's Church, the only Grade I building in Bicester, a timber-framed house of 1676 on the Causeway and one of just two thatched buildings in town.

Around the Market Square they record limestone rubble laid in courses alongside colourwashed brick and brick, partly rendered, with squared limestone rubble and timber lintels. Builders in the district also used lime render, timber and Stonesfield slate. These buildings predate 1875, the year after which the Property Care Association code expects a damp-proof course. Walls like these depend on permeable materials that take up moisture and let it go again, Historic England explains, and cement can lock that moisture in.

Oxford City Council's heritage guidance says the same of Oxford's old buildings, which have to be able to breathe. It also points out that listing covers interiors as well as exteriors, so internal work can need consent too. Ask Cherwell before work starts on a listed house.

On a damp survey of an old Bicester house we check pointing, render, gutters and ground levels against the wall, look for hard cement patches, and test timber lintels and joist ends for wet rot. Chemical injection is considered only where rising damp is proved, and the Society for the Protection of Ancient Buildings starts from a presumption against adding damp-proof courses to buildings from before about 1919. See damp in old and listed buildings.

Are homes near the River Bure and Langford Brook in Bicester more likely to get damp?

Yes, because flood water and high groundwater both leave walls and floors wet long after the water has gone. The Environment Agency's flood warning area for the Bure and Back Brook takes in Hanover Gardens, the Causeway and Priory Lane, north of Bicester Village. A second, for the Langford Brook, covers Langford Village and the Launton Road Industrial Estate.

The Bure has flooded homes within recent memory. On Christmas Eve 2013 the river overtopped its banks at Hanover Gardens; firefighters brought around 50 people to safety, and many residents could not return home until the New Year.

Groundwater is the slower problem. In the Langford Brook catchment the main bedrock is Cornbrash limestone and Peterborough mudstone, with White Limestone, a principal aquifer, under part of it. Thames Water reports an exceptional groundwater peak in early spring 2024, after 1,041 mm of rain in 2023/24 against a 682 mm average, and sewers have surcharged in recent wet winters. Beside the Langford Brook the ground is dark, organic, partly peaty clay and silt, which is slow to drain.

After a flood or a wet winter, Oxford Damp Specialists measures how high water has wicked into plaster and floor screeds, checks that the void under any suspended floor has drained and its airbricks are clear, and notes where salts are coming through as walls dry. Damp that follows the water table is penetrating damp or groundwater, and in a cellar it becomes a basement tanking question rather than a damp-proof course one.

Why do new homes in Kingsmere, Elmsbrook and Graven Hill get condensation?

Because new mortar, plaster and screeds are full of construction water that takes time to leave, and well-sealed homes rely on ventilation to carry it out. NHBC advice for new-home owners warns that condensation can form while those materials dry, and recommends open trickle vents and steady warmth.

Bicester is building on a large scale. In 2014 the government backed a garden town with up to 13,000 new homes, and Cherwell expects the population to roughly double, to about 50,000. Kingsmere, in South West Bicester, was planned at 1,585 homes, with a second phase of 709 since. Graven Hill, on former Ministry of Defence land, was bought for as many as 1,900 homes as a self-build scheme. Elmsbrook's 393 homes meet Level 5 of the Code for Sustainable Homes, with super-insulation and triple glazing.

A tightly built, well-insulated house has fewer cold spots, but also fewer gaps for moisture to escape through. With extract fans switched off or trickle vents shut, the water from cooking, showers and drying clothes stays in the rooms. Cherwell's guidance also tells residents not to block air-bricks.

On a condensation and mould visit to a Bicester new build we log humidity in each room, check that fans and vents work and are being used, look for missing insulation at the eaves and window reveals, and rule out leaks from plumbing, roofs and window junctions. Our guide to condensation in the bedroom covers the winter pattern.

Who should Bicester tenants report damp and mould to?

Your landlord first, then Cherwell District Council if the landlord does nothing. Cherwell's damp guidance says condensation is behind the damp and mould in most homes, expects every landlord to look for and deal with damp and mould without waiting to be asked, and invites tenants to report problems to the council when a landlord fails to act. It also advises against brushing mould off, since that sends spores into the air.

Across Cherwell, social homes are almost all housing association homes. The council moved its council housing to housing associations in the late 1990s and early 2000s, and its draft Housing Strategy 2025 to 2030 puts about 99% of the district's 10,505 social homes in housing association ownership, most of them with Sanctuary. Housing association tenants report to their association first. At the 2021 Census, 19.9% of Bicester households rented privately and 12.9% rented socially.

The same draft estimates that one in five private rented homes in Cherwell has a Category 1 hazard, that 11% suffer excess cold, and that damp and mould concerns have grown since the death of Awaab Ishak. A county assessment found Cherwell markedly worse than England for excess cold, at 6% against 3% in 2018 BRE modelling quoted in a 2025 county report, and cold walls are exactly where condensation settles. Cherwell's enforcement policy sets out how it uses the government's hazard rating system and civil penalties; since 23 June 2026 that revised system has 21 hazards rather than 29. Its licensing covers shared houses with five or more people, and the draft strategy records no additional or selective licensing.

For tenants and landlords, Oxford Damp Specialists sets out in writing what is causing the damp and what will fix it. Our guide to Awaab's Law covers social housing timescales.

What we do in Bicester

Bicester is one of two towns with its own page; our main damp proofing in Oxford page sets out every service we offer, and all of it applies in Bicester.

Damp surveys in Bicester

Before you exchange, accept a retention or agree to injection work, find out where the water in that Oxford wall is really coming from.

Rising damp treatment in Bicester

A tide-mark along the skirting is a clue, not a verdict: we prove rising damp, clear whatever bridges the course, and only then treat.

Penetrating damp repairs in Bicester

The patch that darkens every wet October usually starts at a gutter, chimney or crumbling joint, so we follow the rain from outside in.

Condensation and mould in Bicester

Black mould behind the wardrobe is a symptom: we trace the cold surface, the weak extract fan and the humidity feeding it.

Woodworm and rot treatment in Bicester

Flight holes in an old joist can be long dead: we prove woodworm or rot is active and find the water before treating anything.

Basement and cellar tanking in Bicester

Oxford sits on gravels where winter groundwater can lie under a metre down, so a dry cellar needs the right protection type.

What happens after you get in touch

  1. A first conversation

    Call 01865 537413 or use the form. We ask which rooms are affected, how long it has been going on, whether wet weather or cold spells change it, and whether the house is yours, rented or being bought.

  2. A look outside and in

    Roofline, gutters, downpipes, pointing and the ground against the walls first, then the rooms. Where the source is uncertain, the masonry itself is tested, and heating and ventilation are part of the picture.

  3. The findings in writing

    What is causing the damp, what the evidence is, and the order in which to put it right. Work that belongs to a roofer or heating engineer, or that needs no tradesperson at all, is named as such.

  4. Repair, then patience

    The source is cured before anything is replastered or decorated. Soaked walls can take months to give up their water, and we explain what to leave alone while they do.

Bicester questions

Which parts of Bicester do you cover?

The whole town, from the Market Square and the Causeway to Kingsmere, Elmsbrook, Graven Hill and Langford Village. Use the quote form to arrange a survey.

Who do I report damp to if I rent in Bicester?

Raise it with your landlord first and keep a written record. Should a private landlord fail to act, Cherwell District Council accepts reports from tenants; housing association tenants should go to their association first.

My new build in Bicester has black mould. Is that normal?

Some condensation is normal while a new home dries out, but mould that keeps returning means moisture is not getting out. Keep trickle vents open and fans running, and if it persists a condensation and mould visit will show whether ventilation, insulation or a leak is to blame.

Sources for this page

Before you call

A few details let us narrow down the likely cause on the phone.

  • Postcode and the rough age of the building
  • Which rooms and walls, and how far up
  • Whether wet weather or cold snaps change it
  • Where any mould is growing
  • Owner, tenant or buyer, and any deadline
Ring 01865 537413Arrange a survey

Next door to Bicester

Damp proofing in Oxford

OX1, OX2, OX3, OX4

Damp proofing in Didcot

OX11

Arrange a damp survey in Bicester

Your name, number and the property postcode are all we need. A sentence about the room and the wall makes the first call quicker. Or ring 01865 537413.

Enquiries are shared only with the team who quotes for and does the work. Used for this enquiry only (privacy notice).

Ring now01865 537413Arrange a surveyWe call you back