How Long Does an EPC Take? A Berkshire Homeowner’s Guide for 2026
Written by the Frank EPC team of accredited Domestic Energy Assessors (DEAs). Last updated August 2026.
The short answer
An EPC takes about 30 to 60 minutes on site, and the certificate is usually lodged on the national register within 24 to 72 hours. For a typical Berkshire home the assessor visit is short and non invasive, so from the moment you book to the moment your Energy Performance Certificate lands, you are often looking at just one to three working days. If you are up against an estate agent deadline, many domestic EPCs can be turned around same day or next working day. Nothing gets drilled, lifted or damaged during the visit, and you do not need to do anything beyond giving the assessor access to each room, the loft hatch and the boiler.
In a hurry to get listed? Frank EPC provides accredited same day and next day certificates across the county.
How long does an EPC take, start to finish?
There are two timings that matter, and people often mix them up. One is how long the assessor spends in your home. The other is how long you wait for the finished certificate to appear on the register. Here is how they break down for a standard domestic property.
| Stage | Typical time | What is happening |
|---|---|---|
| Booking to visit | Same day to a few days | Depends on assessor availability in your area |
| The on site assessment | 30 to 60 minutes | Assessor measures and inspects the property |
| Producing the certificate | A few hours to 72 hours | Assessor runs the data and lodges the EPC |
| Total, booking to certificate | 1 to 3 working days | Faster with same day and next day services |
For most sellers and landlords in Berkshire, the honest answer is that the paperwork does not hold you up. The slowest part is usually finding a slot in the diary, which is why booking early always pays off.
How long does the EPC assessment itself take?
The visit for an average three bedroom house takes around 30 to 45 minutes. A small flat can be done in 20 to 30 minutes, while a large or unusually laid out property might take an hour or more. The assessor is not testing anything or running your appliances. They are recording what your home is made of and how it is heated, then feeding that into the government approved RdSAP methodology that produces your A to G rating.
The size and complexity of the property is the main thing that moves the timing. More rooms mean more measuring. Extensions, conversions and older homes with mixed construction take a little longer because the assessor has more detail to capture.
What happens during an EPC assessment?
Knowing what to expect makes the visit quicker, because you can have everything accessible before the assessor arrives. During the survey your Domestic Energy Assessor will:
- Measure the property room by room to calculate the total floor area
- Record the construction type, such as brick, cavity or solid wall, and the age of the building
- Check insulation in the loft, walls and hot water cylinder where visible
- Note the heating system, including the boiler make and model, controls and radiators
- Look at windows and glazing to see whether they are single or double glazed
- Record the lighting, counting low energy bulbs
- Take photographs as evidence to support the certificate
The assessment is non invasive. The assessor will not drill holes, lift floorboards or open up walls. They record what they can safely see, and where something is hidden they use standard assumptions built into the methodology. To keep the visit short, clear access to the loft hatch, the boiler and the meter cupboard before they arrive.
How long does it take to get the EPC certificate after the visit?
Once the assessor leaves, they enter your property data into their software, run the calculation and lodge the finished certificate on the national register. This can take anywhere from a couple of hours to around 72 hours, depending on the assessor’s workload and how quickly they process their reports.
At Frank EPC we produce many domestic certificates the same day or the next working day, which matters when a sale or a tenancy is waiting on it. As soon as your EPC is lodged, it becomes a public record you can view for free on the government Find an Energy Certificate register, and your estate agent can use it to list the property on Rightmove or Zoopla.
Can I get a same day EPC in Berkshire?
Yes, in many cases. Same day and next day EPCs are common for domestic properties, especially when you need the certificate before marketing begins. Under the reformed rules a valid EPC must be in place before a property is advertised, not just before completion, according to the government consultation outcome on reforming the Energy Performance of Buildings regime. That makes a fast turnaround genuinely useful rather than just convenient.
The two things that decide whether same day is possible are assessor availability in your postcode and how straightforward the property is. A standard house in Reading, Bracknell or Wokingham is usually easy to fit in. The sooner you book, the more likely you are to get the slot you want.
What can slow an EPC down?
Most delays have nothing to do with the assessment itself. The usual culprits are:
- No access on the day, so the visit has to be rebooked
- A large or complex property that takes longer to survey
- Busy periods, such as the spring and autumn selling seasons, when diaries fill up
- Missing information, for example if the loft or boiler cannot be reached and needs a follow up
You can avoid nearly all of these by booking ahead and making sure the assessor can reach every room, the loft hatch, the boiler and the meters when they arrive.
Do I even need a new EPC, or do I already have one?
Before you book anything, it is worth a two minute check, because an EPC lasts 10 years and you may already be covered. Around 40 percent of homeowners hold a valid certificate without realising it. Search your postcode on the free Find an Energy Certificate register, and if a certificate appears that has not passed its expiry date, you do not need a new one. Our guide on how long an EPC lasts explains exactly when a fresh assessment is required, so you do not pay for one you do not need.
If your certificate has expired, or your home has never had one, then booking an assessment is the next step. Wondering what it will cost first? Our Berkshire EPC price guide breaks down typical 2026 fees by property type.
How to book a fast EPC in Berkshire
Booking is simple. Choose a slot, give the assessor access to the property, and let them do the short survey. Frank EPC produces many certificates the same day or the next working day, and we cover Reading, Bracknell, Slough, Windsor, Wokingham, Maidenhead and the wider county. You can book an accredited EPC assessment online, or if you are in the Bracknell area, head straight to our EPC Bracknell page. Planning to sell? Our guide on whether you need an EPC to sell your house walks you through the timings so the certificate is ready before you go to market.
Frequently asked questions
How long does an EPC take to complete? The on site assessment takes about 30 to 60 minutes for a typical home, and the finished certificate is usually lodged within 24 to 72 hours. From booking to certificate is often one to three working days.
How long does the EPC assessment visit last? For an average three bedroom house the visit takes around 30 to 45 minutes. Small flats can be quicker, and large or complex properties can take an hour or more.
How quickly can I get an EPC certificate? Many domestic EPCs are available same day or next working day. Once the assessor lodges it on the national register, you can view it for free straight away.
What happens during an EPC assessment? The assessor measures each room, records the construction, insulation, heating, glazing and lighting, and takes photographs. It is non invasive, so nothing is drilled or lifted.
Do I need to be home for the EPC assessment? Someone needs to give the assessor access to the whole property, including the loft hatch, boiler and meters. It does not have to be you, as long as whoever attends can let them in.
Can I get a same day EPC in Berkshire? Often yes, depending on assessor availability and how straightforward the property is. Booking early gives you the best chance of a same day or next day slot.