Do you need a Residential or Commercial Water Calculations?

If yes, call us on 020 3745 1093 or complete our online form by clicking the button below and we will get back to you straight away

Do you need Water Efficiency Calculations for your new build or conversion

Water Efficiency Calculations

Do you need Water Efficiency Calculations for new dwellings, extensions or conversions. We offer a fast yet affordable consultancy service helping you achieve your goals.

What are Water Calculations?

Approved Document Part G of the Building Regulations requires all new dwellings (including conversions) to use less than 125 litres of water per person per day. This can be demonstrated by supplying Building Control with an appropriate water efficiency calculation at the design stage and on completion of a build.

In addition to Water Calcs, feel free to browse other services such as SAP Calculations and SBEM Calculations. Moreover, please also feel free to view all our Services Page.

Dedicated Energy Assessor

As soon as you instruct us, you will be assigned a SAP Assessor who will deal with your case from the start to the finish.

View, Track and Download

Our Customer Portal system allows for up to the minute news on all your jobs without the endless phone calls and emails.

Flexible Payment Plans

You do not have to pay the full amount when you instruct us, let us carry tailor make your very own payment plan to suit you.

The World Is Changing

We understand that buildings are often subjected to change. Therefore, we have created a system where we can easily update or amend previous issued reports.

Water Efficiency Calculations Explained

Water Calculations

Building Regulations require all new dwellings (including conversions) to use less than 125 litres of water per person per day. Moreover, this must be demonstrated by supplying Building Control with water calculations at the design stage and on completion of the build.

Furthermore, asides from the national mandatory requirements, local planning authorities can be more stringent. In addition, they can set water consumption at a rate of 105 litres per person per day. Moreover, this is part of their localised sustainability requirements.

How are they calculated?

Firstly, the projected water usage of a property is calculated in accordance with the Government’s published methodology. Secondly, the calculation considers the following:

The capacity of any installed baths
The flush capacity of all installed toilet cisterns
The flow rate of installed taps and showers including any restrictors that may have been installed
The specific water consumption of any installed washing machine
The effect of any installed rain water or greywater harvestings systems
The efficiency of any installed water softeners
The specific water consumption of any installed dishwashers

When, Why and How

It is easier to change the bath you are planning to buy than changing the one you have already bought. Therefore to save money and any potential issues later in the build, ordering them at the design stage would be beneficial.

How to instruct us?

The process is fairly straight forward.

Firstly, we will email you our quotation together with scope of works and insurance schedule. .

Secondly, we will insert the information from the usual documents into our software, to produce the reports.

Thirdly and finally, we will then send you the final reports with any recommendations.

If your building fails however, we will look to work with you to achieve a pass offering practical solutions.

In addition to our standard fee, this Technical Consultancy is included within our fees and distinguishes us from our competitors.

What do you need from me

Once the calculations are complete, we will provide you with the relevant reports. Above all, this will show compliance has been met and the water efficiency of the property.

Call us on 020 3745 1093 or if you are on the mobile click the button below.

If you would like to book an appointment, for instance or would just like a general chat about any one of our products, please do not hesitate to get in touch anytime.

Click to Call

People who have trusted Assessment Hive so far

We realise that opening up your trust for first time on an unknown website to buy from can be difficult. Above all, you don’t know who we are and our track record. To help you ease your mind, please take the time to view our Video Testimonials, Google Reviews, Yell Reviews. More importantly, we do not take payment upfront and there are no hidden fees. There is therefore no financial loss to you when instructing us to carry out your assessments.