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UK Coverage

Based from our head office in North Hertfordshire, we co-ordinate our team of UK-wide based air, sound and vent test engineers, SAP & SBEM energy assessors to ensure we can provide a prompt and efficient service for your needs.

We offer full UK-wide coverage for our range of building compliance services, often with as little as 24 hours notice. 

Wherever you may be, we are here to help!

As this is a desk based service we are ON HAND AT ALL TIMES, having carried out over 12,000 water calculations we are one of the UK's leading Water Efficiency Calculations suppliers. Book NOW.

Fool Proof checklist issued to Gain a 100% PASS rate will be issued to assist, help, guide and most importantly comply to meet the Part G building regulations. Book now to recieve this OFFER.

Accredited assessors on a NATIONWIDE basis. If needed they could also be completed on the SAME DAY to meet an urgent requirement. Talk to your dedicated account manager NOW.

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Unit 3 & 4, The Cokenach Estate, Barkway, Royston, Hertfordshire SG8 8DL

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No 1 Company in the UK for design, consultancy and compliance services

“HOW do ATSPACE achieve 97% PASS rate for 

Water Calculations 

To Comply With Part G Of The Building Regulations? ”

Over 12,000 Water Calculations Carried Out With A Record 95% Happy Customer Satisfaction Survey

Water Calculations are required to comply with Part G of building regulations. 

The method and requirements are to look at the efficiency of the structure whether residential or commercial, and to take into account all of the water that goes in and out of your building. 

Different areas of the UK have different rates of water consumption per person per day which is decided by each building control office or body. 

When we work with you, we will ask you a few simple questions to help turn around your request as soon as possible, also our energy assessors are here to help you at all times. We're one of the UK's leading water efficiency calculations businesses with over 220,000 water calculations, so you are always in safe hands. 

We look at all aspects of water usage within your build, including taps, showers, washing machine and dishwasher use too. 

We're here to help you at all times and a lot of our clients opt for us to complete their SAP calculations, along with all of their compliance services so that we can work out bespoke packages to include all services needed such as air, sound and vent testing too. 

We're here to assist you as small things can make a big difference when it comes getting everything right first time, every time.


"The service received from ATSPACE has been great. 

The Engineer that carried out the water calculation was absolutely superb, thank you ATSPACE"

“ATSPACE helped us achieve Part G Regulations efficiently on time and on budget! A pleasure to work with and a friendly team, thank you!”

"ATSPACE were brilliant for my most recent project. Your engineer ensured that the Water Calculation was carried out fast and efficiently"

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Paul Whiffin

ATSPACE Managing Director

Free Recommendations To Achieve Part G Regulations

Paul Whiffin has developed ATSPACE as a leading provider for various design, consultancy and compliance services, ranging from self-builders through to national house builders.  As a developer himself, he understands the pain and as a reflection built an enviable company which has grown over a decade. 

As a construction expert Paul has worked alongside his accredited water calculation engineers to gain knowledge in this field and position himself and the company as the UK's leading design, consultancy and compliance company, enabling over 40 thousand companies to gain building regulation sign off.

Paul’s experience expands over 10 years, he has trained his home-grown account managers to handle multiple disciplines to assist builders, developers, architects and national house builders.

He is the managing director for one of the leading companies for this sector in the UK. He has achieved a 95% Happy Customer satisfaction score and 86% of his customers have returned to work with him on new and upcoming projects. 

He continues to build this empire to assist a strategic growth plan and to help maintain his clients, or partners as he refers them to. 

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Justin Thompson

 Managing Director 

Company Undisclosed


We have been a customer for over six years, and find that ATSPACE delivers a quality Water Calculation Service. It's rare to have a long-term relationship with such professionalism and consistency.

Nathan Page 


Olly Wigg


Bowson Leeway Homes

Carlo Infanti


Gold Leaf Properties Ltd

Nationwide Assessors

4.9 Star Google Review