Jon Close is a specialist Construction and Engineering lawyer with over 20 years’ experience advising on both contentious and non-contentious matters. His work spans renewable energy, infrastructure and utilities projects, as well as precision manufacturing, agri-tech, secure facilities, commercial and mixed-use developments, and prime residential schemes. He advises employers, contractors, engineers, and design teams across procurement, contract drafting, project delivery, and dispute resolution.
Jon has significant experience in technically complex and innovation-focused projects, particularly those involving R&D environments, advanced engineering, and integrated digital/physical security requirements. He is an ADRg-accredited mediator and a TeCSA solicitor, with extensive experience in adjudication, mediation, arbitration, and litigation.
Expertise
Jon is a construction and engineering specialist, handling both contentious and non-contentious legal work. His practice focuses on acting on hotel developments, including new builds and renovations.
Experience
- Drafted and negotiated the UK roll-out of construction documents in the UK for Pure Gym across over 70 sites including the first at Spinningfields, Manchester, in 2009.
- Advised and drafted the contract suite based on JCT D&B 2016 with further considerations for phase 1 (£60m) proposed hotel development in Cornwall, acting for Kingfisher UNA Resort Ltd and St James’ Construction Ltd.
- Drafted contracts (JCT, ICC-based plus consultants’ appointments, assignments and novations) for a number of hotel groups including Holiday Inn Express, Luxury Family Hotels Group, and Cotswolds-based boutique hotel group Dunkerton Properties LLP with a build value for each site of between £450,000 and £4.2m.
- Acted for the successful contractor for recovery of sums due in both SG South Ltd v (1) Kings Head Cirencester LLP (2) Cornhall Arcade Ltd [2009] and SG South Ltd v Swan Yard (Cirencester) Ltd [2010] in relation to a shopping centre development and high-end hotel.
- Advised on various contractual issues arising from works at hotels at Moonfleet Manor, Dorset, and Thornbury Castle.
- Acted for Dowdeswell Estates (Building Contractors) Ltd in relation to contractual issues with their supply chain and fund raising in relation to a number of their hotel renovation sites including a £55m city centre re-development in Gloucester.
- Drafted SMA Building and Maintenance Solution Limited’s framework agreement with Majestic Wines for property maintenance work to be done across 107 stores, within the UK.
- Supported an ultra-high-net-worth individual, who is a key player in the global gambling industry, with the negotiation of all construction documents for the £40m renovation of the property and grounds of a country estate in Hampshire.
Jon has particular expertise in energy-related issues including renewables and green technology, acting for employers and their design teams, as well as contractors and engineers.
Experience
- Advised a mid-tier energy company in relation to the proposed rollout of its grass-fed-only AD plants, using a local network of farms within 10km of each site to achieve a sustainable feedstock.
- Drafted supply, installation and commissioning contracts for anaerobic digestion plants for an Austrian engineer – bespoke contracts, IChemE Red Book and MF/1 procured across England and Scotland (140kwp-2.4mwp schemes with Downing funding considerations) including specialist plant and civil engineering.
- Drafted EPC contracts for commercial solar schemes including the largest rooftop solar PV installation in Europe in 2014 (6.1 MW with an array the size of 11 football pitches) at Marks & Spencer’s distribution hub at Castle Donnington, Leicestershire. Advised further on the rights disposal to Amber Infrastructure.
- Advised on various piling and O&M contracts relating to wind farms (ICE/ICC-based).
- Acted for Ecotricity Group on the procurement of manufacturing facility and provided related contract advice relating to MF/1, JCT and bespoke appointments with engineers based in Italy, Germany, and the Czech Republic.
Jon advises clients in the agriculture and rural affairs sector, and their design teams, on construction and engineering projects.
Experience
- Advised a county estate in the North West in relation to the construction of a number of buildings and facilities on the wider estate, including a wedding venue by way of diversification.
- Advised Biogest AG on the procurement and installation of anaerobic digesters on a number of farms and estates within the UK.
- Advised a mid-tier energy company in relation to the proposed rollout of its grass-fed-only AD plants, using a local network of farms within 10km of each site to achieve a sustainable feedstock.
- Advised a leading agri-tech business engineering, procurement, and commissioning (EPC) contracts for the construction and installation of vertical farming works, including automated systems in the Northamptonshire, London, Italy, Australia, and Mexico.
- Advised a regional project management team in relation to a number of their projects including runway upgrade works for Gloucestershire Airport, a large regeneration project for Cotteswold Dairy in Tewkesbury, new facilities for Hartpury University, and upgraded storage facilities for The Science Museum at Wroughton, near Swindon, Wiltshire.
- Advised a well-known installer of equine facilities for the design, supply, and installation of livery complexes.
Jon is a construction and engineering specialist, handling both contentious and non-contentious legal work. His practice focuses on acting for developers and their design teams, as well as contractors and engineers.
Experience
- Advised Cell Therapy Catapult (Innovate UK) on procurement strategy and contract drafting for a £6m clean-room research and development facility at Guy’s Hospital.
- Drafted and negotiated FIDIC Silver and Yellow Book contracts for a £9m high-performance automotive testing facility in West Sussex for Horiba UK.
- Led negotiations with Wasserman (US) regarding the retractable tensile roofing installation at the Katara Fan Zone in Doha, ahead of the 2022 World Cup, and for further Middle Eastern sites.
- Advised local authorities in the South West on procurement and contract matters relating to sports facilities, roofing remedial works, and a brewery and canalside regeneration scheme under JCT forms.
- Prepared suites of construction contracts for national housebuilders (including Cotswold Oak / Bloor Homes / RES Homes) on multi-million-pound housing schemes (average site values £3m–£5.7m).
- Resolved a £4m dispute on the renovation of a Grade I listed private estate in the Cotswolds.
- Advised on construction arrangements for prime and super-prime residential developments across London, Berkshire, Oxfordshire, Wiltshire, and Gloucestershire, including re-pricing, variation, and delay claims.
- Advised the owners of a country estate in the North West on the design and delivery of a new £3m country wedding venue, including construction contract negotiation and commercial project support.
- Acted for a care home provider in the West Midlands on valuation of final account claims relating to 16 luxury apartments (£5.4m) and the subsequent procurement strategy for a wider development phase.
- Supported a large UK housing and construction services provider in ADR proceedings concerning heating and water supply design failures on a London authority housing project, including issues surrounding a disputed performance bond.
- Advised on Belgravia townhouse construction and smart-systems integration as part of a high-value residential property acquisition by a Qatari investor.
- Advised on construction and engineering aspects of the sale of apartments at Regent’s Crescent in prime central London.
- Provided construction and fit-out advice for a client relocating its headquarters to 27 Eccleston Place, Belgravia.
- Advised on lease acquisition, construction contract and property matters relating to the creation of a cultural events space in London.
- Advised a global engineering and consultancy firm in relation to construction matters relating to its acquisition of over 27,000 sq ft in CEG’s flagship EQ development in Bristol city centre.
- Advised and drafted construction documents in relation to an £8m renovation of a super prime residence in Eaton Square, London.
- Advised a Saudi investor in relation to a non-compliance flooring-level issue caused by the contractor during the fit-out of a super prime residence in London.
- Advised and represented a manufacturer in the North West in relation to defects arising within its new warehousing facility.
- Advised a listed commercial developer in relation to issues arising with the HVAC system, cladding, and roof of its tenanted property in East London.
- Advised the owner of a prime residence in Hampshire in relation to claims for defective design and workmanship.
Please note: The experience list above may include examples of work completed prior to joining Keystone Law.
Recognition
Recognised by The Legal 500 for Construction 2020–2027
Recognised by The Legal 500 for Agriculture and Estates 2025 & 2027
Recognised by Chambers UK for Construction 2022–2026
Recognised by The Legal 500 for Power (including electricity, nuclear and renewables) 2022–2024
Recognised by Chambers UK as a Leading Individual for Construction: South West 2022
Author of A Comparative Guide to Construction and Engineering Contracts (published by Law Brief Publishing, September 2017)
Co-authored pieces on the benefits in terms of legal risk management associated with offsite modular construction
Member of the Society of Construction Law
“I worked with Jon Close, who I found to have a professional approach mixed with a friendly demeanor, like a family member you could trust. I believe this comes from his ethical values that drive the working relationship and rapport.”
The Legal 500 2027
“He provides strong commercial advice in an accessible way.”
Chambers UK 2026
“Jon Close is a pleasure to work with. He is professional, diligent, straight to the point, and highly knowledgeable. I would not hesitate in recommending him to any client.”
Chambers UK 2026
“Jon continues to provide invaluable support to us. He is always contactable and a pleasure to work with; I regularly recommend his services to other professionals.”
Chambers 2026
“We have been very pleased with his service.”
Chambers UK 2025
“Jon's approach to litigation is straightforward and effective.”
Chambers UK 2025
“I know he can be trusted to deliver.”
Chambers UK 2025
“Jon's approach to litigation is straightforward and effective. We have been very pleased with his service.”
Chambers UK 2025
“Jon is diligent and meticulous, ensuring matters are dealt with swiftly. Once a strategy is in place he is great at keeping us apprised at all times. I know he can be trusted to deliver.”
Chambers UK 2025
“Jon is great at communicating updates to our business and at keeping the legal processes flowing without hindrance.”
Chambers UK 2025
“I've always found Jon to provide straightforward practical advice, even when dealing with complex matters, considering equally the commercial realities and legal aspects of a situation.”
Chambers UK 2025
“One of Jon's strong points, amongst many others, is his commerciality. Having a construction lawyer acting for us who is very commercially aware and industry savvy really adds weight to the advice being provided.”
The Legal 500 2025
“Jon Close is especially diligent and meticulous, ensuring matters are dealt with swiftly. Once a strategy is in place he is great at keeping me, the client, apprised at all times. I know he can be trusted to deliver against any methodology that has been agreed and any strategy developments that evolve I am always kept informed through regular communications.”
The Legal 500 2025
“Jon Close continues to be my go-to person, he has an excellent manner and is very pragmatic in is approach to matters. We have always had great results when using Jon for our commercial and litigation cases.”
The Legal 500 2025
“Jon Close is particularly knowledgeable in his field and I have always been very extremely satisfied with the quality of his advice and work.”
The Legal 500 2025
“One of Jon Close's major strengths is his commerciality. Having a construction lawyer who is very commercially aware and who is knowledgeable in the technical aspects of the industry really adds weight to the advice being provided.”
Chambers UK 2024
“We have worked with Jon Close for years due to the high standard of advice that he has always given.”
The Legal 500 2024
“Jon Close is responsive and very practical in his advice, and always finds a solution.”
The Legal 500 2024
“Jon Close has always been highly professional and provides our company with excellent advice in a timely manner.”
Chambers UK 2023
“Having a commercially aware construction lawyer like Jon acting for us really adds weight to the advice being provided.”
Chambers UK 2023
“Jon is proactive, commercial and dogged in his pursuit of a deal for his clients. He is also adept at advising on novel developments on deals and is a good lawyer to have by your side.”
Chambers UK 2022
“We have engaged Jon Close on a number of occasions over several years and have also recommended Jon to our own clients. Over the years we have engaged Jon to assist us on a number of complex adjudications and on each occasion Jon has provided advice which has resulted in a positive outcome for both us and our clients. Jon is an erudite individual with an encyclopedic knowledge of construction law.”
The Legal 500 2022
“Jon Close in particular is a fantastic networker and is blessed with a contact directory that always enhances the client experience. Added to which the Keystone model enables partner-led advice at a more reasonable fee amount and the Keystone model also ensures that genuine sector specialists are engaged where there is merit in doing so. A genuinely collaborative practice.”
The Legal 500 2022
“Jon Close and Tom Phillips are fantastic committed passionate construction professionals and they absolutely take the time to understand the client’s business and what they can do to help and address any issues.”
The Legal 500 2022
“Jon Close is a key contact.”
Chambers UK 2014
“Jon Close has advised a number of international clients, including Horiba and Biogest Energie und Wasstertechnik GmbH, on a wide range of matters.”
The Legal 500 UK 2014
“Jon Close is recommended.”
The Legal 500 UK 2012
Jon qualified as a solicitor in 2005. Prior to joining Keystone Law in 2016, he worked at the following firms:
- BPE Solicitors
- Osborne Clarke
- Eversheds
Jon's latest news and resources
Keystone Law advises Dale Vince and Ecotricity on the development of Sky Diamond®, the world’s first eco-friendly diamonds
Jon Close
Keystone lawyer launches new book on Construction and Engineering Contracts
Jon Close
Keystone bolsters Construction team with the hire of two senior solicitors
Jon Close & Ronan Speers