Strategic Property & Housing Dispute Consultancy
For property and housing disputes that are difficult to move
Cosil Solutions works with organisations and individuals where property, housing, leasehold, landlord and tenant, complaint or commercial disputes need structure before the next step is taken. We assess what has happened, where the risk sits, what is documented, and what a proportionate route forward looks like.
Most providers facilitate disputes. Cosil Solutions structures them, assesses risk, and guides resolution, with mediation used where it is the right tool.
Since 2003
Housing and property sector experience
Since 2013
Direct dispute involvement
?200k+
Complex matters supported
- Accredited Civil & Commercial Mediator
- Greater London Enterprise Awards 2025
- Sector experience since 2003
- 20+ Years Housing & Property Sector
Our role
Independent structure
Before the next step is taken.
When a dispute becomes difficult to resolve, the problem is rarely the dispute alone. It is the absence of structure around it: unclear records, hardened positions, missed stages, fragmented communication and decisions being made under pressure.
Cosil Solutions brings that structure. We identify where risk and breakdowns sit, clarify what is at stake, and establish a proportionate route forward before cost, exposure or scrutiny increases.
Conflict Resolution
Brought in early, before positions harden. Structured intervention that keeps options open and costs down.
Dispute consultancy & case management
Strategic guidance, compliance review, and case assessment at every stage of a dispute.
Civil & commercial mediation
Accredited, impartial, and confidential. Used when it is the right tool, not the default one.
Proprietary framework
R.E.S.O.L.V.E.
The R.E.S.O.L.V.E. framework underpins all Cosil engagements. It provides a consistent, evidence-based approach to assessing disputes, identifying risk, and guiding proportionate decisions at every stage. Full framework detail is available on request.
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Situations we are brought into
When the next step has consequences
A complaint is approaching Ombudsman referral. A service charge dispute has become organised and formal. A landlord and tenant matter has stopped moving. Internal teams cannot agree the next step. The matter is legally live, but relationally stuck. These are the points at which Cosil Solutions adds structure.
Focused practice areas
Property, housing, leasehold, complaint and mediation support
The practice is intentionally focused. Cosil Solutions supports matters where housing, property, leasehold, landlord and tenant, complaint, community or commercial disputes require clear assessment, defensible records and a proportionate route forward.
Landlord & Tenant Disputes
Practical resolution and position clarity across residential and commercial tenancies, including rent, obligations, disrepair, and escalation risk.
Leasehold & Service Charge Disputes
Technical and regulatory matters requiring precision, including service charges, enfranchisement, right to manage, and complex lease issues.
Dispute Strategy & Advisory
Strategic assessment of your dispute position, risk exposure, and options before matters escalate or formal proceedings become likely. Structured advisory support to define proportionate next steps and protect your position.
Boundary, Neighbour & Community Disputes
Structured handling of entrenched disputes where positions have hardened and communication has broken down.
Complaint Handling & Case Review
Review of complaints, compliance, and documentation to ensure positions are clear, defensible, and aligned with regulatory expectations.
Civil & Commercial Mediation
A structured, impartial process where parties retain control of the outcome. Applied across property, housing, workplace, commercial, partnership, and separation-related disputes. Used as part of a wider resolution strategy.
Property, Housing & Civil Mediation
- Property dispute resolution
- Housing dispute support
- Leasehold and service charge disputes
- Landlord and tenant disputes
- Boundary and neighbour disputes
- Workplace and organisational disputes
- Commercial and contractual disputes
- Community and antisocial behaviour disputes
- Partnership and shareholder disputes
- Professional negligence disputes
- Probate and inheritance disputes
- Consumer and business disputes
Complex & Escalated Matters
- Complaints and escalation disputes, including pre-Ombudsman matters
- Pre-action and ADR-linked disputes, including matters heading toward tribunal or court
- Multi-party and group disputes requiring structured coordination
- Governance and organisational disputes involving internal decision-making breakdowns.
Cosil Solutions operates across the full range of property, housing, civil and commercial dispute types. If your matter is not listed, an initial discussion will confirm whether we can assist.
Our role is to bring structure, clarity and a controlled process to guide resolution without unnecessary escalation. Increasingly, courts expect parties to engage with appropriate forms of dispute resolution before proceeding to formal proceedings.
Separation-Related Disputes
Financial, property, and ownership disputes arising from separation.
Where parties need a structured, independent process to resolve financial and property matters without court intervention.
Areas Covered
- Financial settlement and asset division
- Property disputes arising from separation
- Co-ownership and beneficial interest disputes
- Family business disputes on separation
Position established
A clear, defensible position
Each engagement is designed to clarify what is known, what is disputed, what is missing and what must happen next.
What clients gain
A clear, defensible position from the outset of the engagement.
Exposure reduced
Escalation and litigation exposure identified and actively reduced.
Path to resolution
A structured route to resolution or settlement, clearly defined.
Capability strengthened
Stronger internal handling of complex disputes going forward.
Time, cost and reputation protected
Active protection of time, cost, and reputation at every stage.
Ready to discuss your matter?
An initial consultation clarifies the position, the risk and whether Cosil Solutions is the right fit for the matter.
Methodology
A disciplined approach to every matter
Every matter is different. The discipline is consistent: understand the situation fully before advising on it, then guide decisions that are proportionate to what is at stake.
01
Understand
Assess the situation in full, including history, documentation, and the position of all parties.
02
Clarify
Identify what is known, what is in dispute, and where the gaps and risks sit.
03
Assess
Review compliance, procedural stages, and the strength of each position before any action is taken.
04
Guide
Provide clear, structured guidance on proportionate next steps.
05
Conclude
Structure the most appropriate route to a clear, workable outcome, whether through dialogue, mediation, or case management.
Why It Matters
Why structure matters
Formal proceedings are sometimes necessary. They are rarely the most proportionate first response. A structured dispute process can narrow the issues, preserve options and reduce the cost of decisions made too late.
| Aspects | Litigation / Court | Cosil solutions |
|---|---|---|
Time to Resolve | Typically 12 months | Weeks rather than months, in most cases |
Average Cost | Significant, often unpredictable | Transparent, agreed in advance |
Control | Judge-led | Client-led |
Privacy | Public record | Confidential and without prejudice |
Approach | Adversarial and formal | Structured and proportionate |
Relationship Impact | Can strain or damage working relationships | Preserves communication and cooperation |
Outcome | Judgment | Resolution-focused |
Figures are indicative and vary by matter type, complexity, and stage. All Cosil engagements are scoped and agreed in advance.
Who We Support
Organisations, individuals and professional partners
Our work is defined by the nature of the pressure, not only the type of client. Whether the matter sits within a housing portfolio, a private property dispute or a professional advisory context, the approach is structured, clear and proportionate.
Housing & Property
Organisations Managing Complaint and Dispute Risk
Portfolio-level dispute management, complaint handling review, compliance review and strategic support where dispute volume, regulatory pressure, Housing Ombudsman exposure or escalating matters require structured, independent input.
- Managing agents and housing providers
- Housing associations and registered providers
- Local authorities
- Private landlords and commercial operators
- Employers and workplace teams
Private Individuals & Complex Matters
Leaseholders, Tenants & Property Owners
Structured support for individuals where the complexity or value of a matter requires specialist input: leasehold disputes, service charge disputes, landlord and tenant matters, boundary conflicts, separation-related property issues, repairs or disrepair concerns, and complaints that have not been resolved.
- Leaseholders
- Residential tenants
- Property owners
- Freeholders
- Residents associations
Organisations & Operational Teams
Legal Teams & Professional Advisors
We work alongside solicitors, legal teams, housing providers and professional advisors where specialist dispute expertise, independent case review, complaint assessment or accredited mediation strengthens the overall approach and outcome.
- Solicitors and legal teams
- Housing consultants
- Surveyors and property professionals
- Compliance and governance advisors
Professional recognition
Trusted by sector professionals
Julie Jules
Insley at Cosil Solutions provided me with support to complete a money claim against a large organisation following them causing significant damage to my home. Insley reviewed my claim, structured a proposal to amend and strengthen it, and responded in the time frame promised. Within hours the defendant offered an out of court settlement. Insley went above and beyond to help me negotiate a final satisfactory offer, which I accepted.
Elvis G
Insley and Cosil Solutions have done great and supportive work for myself. Insley helped on resolving a boundary dispute that my neighbour had raised against me. Insley was engaged with all communication between me and my neighbour. Speaking with Insley throughout the procedure was a pleasure as her communication style gives you peace of mind.
Blossom Edwards
I found Insley to be highly professional with a vast knowledge of leasehold tenures. Solution-focused with a high level of customer care. I would welcome the opportunity to work with her again.
Charles Hammond
I worked with Insley at Family Mosaic and found her to be very knowledgeable and passionate in all aspects of her role. A professional who delivered her services diligently and efficiently.
Sam Ogah
Insley is by far one of the most knowledgeable individuals I have worked with in the field. She taught me a great deal about the sector, property management, and various issues surrounding property law. I would not hesitate in recommending her expertise to any housing organisation.
Petra
I am so grateful for Cosil Solutions' support in handling my property dispute in a quick and professional manner. Supportive, friendly, and unbiased throughout. I would not hesitate to use them in the future.
Collaboration
Working alongside your team
Cosil Solutions operates as a specialist partner, not a replacement for legal or professional advice. We contribute structured dispute expertise at the points where it matters most.
Law firms and legal teams
Supporting ongoing matters with specialist dispute consultancy and mediation where coordinated input strengthens the outcome.
Housing providers and organisations
Working alongside internal teams to review complaint handling, assess case positions, and support consistent, defensible decision-making.
Consultants and advisors
Providing specialist mediation and dispute consultancy within broader engagements where dedicated dispute expertise adds credibility.
Referral partners
We welcome referral arrangements with professionals who regularly encounter clients requiring structured dispute support or accredited mediation.
ABOUT
Insley Ettienne
Founder & Director
Insley Ettienne has worked in the housing and property sector since 2003. That foundation spans policy and procedure development, lease and compliance review, right to buy, enfranchisement, right to manage, service charge matters, disrepair, and breach of lease.
From 2013, that experience developed into direct involvement in complex and high-value disputes, including matters exceeding £200,000, with exposure to tribunal proceedings, mediation, and formal dispute processes. The focus throughout has been on achieving resolution while limiting reputational exposure and avoiding unnecessary litigation cost.
Supported by postgraduate legal qualifications, the approach brings a strong understanding of legal frameworks and compliance considerations, while maintaining a clear focus on structured resolution.
Cosil Solutions is engaged where matters have become difficult to move and a clear, independent structure is required to reach a workable outcome.
Why Cosil
What sets our practice apart?
01
Genuine specialism
Focused on property, housing and complex dispute environments. Not a general practice. Not mediation as a default. A specialist practice built around the full dispute lifecycle.
02
Consultancy and mediation combined
Most practices offer one or the other. Cosil provides the full range: strategic dispute consultancy, complaint handling review, case management and accredited mediation, each coordinated around the specific situation.
03
Depth of experience
Sector experience since 2003. Direct dispute exposure across complex matters from 2013. The knowledge is operational and specific, not theoretical.
04
Proportionate, not prescriptive
The right approach depends on the situation. We assess first, then advise on what is proportionate.
05
Structured from the outset
Every engagement begins with a clear assessment of the situation, the documentation, the risk and the realistic options. There is no pressure to escalate.
06
A collaborative practice
We work alongside legal teams, housing organisations, and professional advisors as a specialist partner, with the focus always on the best outcome for the matter.
Recognition
Recognised practice
Cosil Solutions has been recognised for specialist dispute consultancy and mediation supporting organisations and individuals in complex, high-pressure contexts.
2025
Greater London
Enterprise Awards
Winner
MSDUK
Certified Diverse
Supplier
Understand your position before the next step.
The Dispute Readiness Check gives a structured view of where your property, housing or commercial dispute sits, what risk you are carrying, and what a proportionate next step looks like. It takes a few minutes and is free.
Our commitment
Resolution that can withstand scrutiny
Not prolonged process. Not escalation for its own sake. Not advice that creates avoidable dependency. The aim, from the first engagement to the final outcome, is a clear, defensible resolution that holds under scrutiny.
Success is measured by whether the matter is better understood, whether the position is stronger, and whether the route forward is proportionate to what is at stake.
For organisations
Disputes resolved with minimal disruption, defensible process and no unnecessary exposure.
For individuals
A clear position, a structured approach and support that does not leave you more exposed than when you arrived.
For professional partners
Specialist input that strengthens your position and adds depth to the overall approach without cutting across it.
FAQ
Common questions.
If your question is not covered here, an initial conversation is the clearest starting point.
Yes. Conflict resolution support is available at the earliest stage, before positions become entrenched and before formal processes are necessary.
Early engagement typically produces better outcomes, greater flexibility, and lower cost.
You do not need to be at crisis point to seek support.
Conflict resolution addresses situations before positions harden, where dialogue is still possible and a structured approach can prevent escalation.
Consultancy provides strategic support at any stage: clarifying your position, assessing risk, organising evidence, and guiding proportionate decisions.
Mediation is a structured, facilitated process used where communication has broken down and parties need independent support to reach agreement.
An initial discussion will identify which approach fits your situation.
Support is provided across:
- Landlord and tenant disputes
- Leasehold and service charge matters
- Housing and property disputes
- Boundary and neighbour disputes
- Workplace disputes
- Community disputes
- Commercial disputes,
- Complaint handling and case review.
Our services can be engaged at any stage, from early concern through to compliance and formal process support.
Yes. This includes reviewing complaint handling processes, identifying procedural gaps, assessing whether required stages have been followed, and ensuring documentation and evidence are in order.
This work draws on extensive experience of how disputes are assessed at formal stages, which informs the quality of support provided well before that point is reached.
Yes. Cosil works alongside legal teams, housing providers, managing agents, and other professionals. This includes supporting ongoing cases, providing independent assessment, and contributing to structured resolution strategies where coordinated input strengthens the outcome.
Cosil provides consultancy, conflict resolution, strategic dispute support, and civil and commercial mediation. The practice can work alongside solicitors, legal teams and professional representatives where coordinated input is useful.
Mediation is appropriate where communication has broken down, where positions are becoming entrenched, or where parties want to reach a workable resolution without formal determination.
It is a structured, impartial process. It is not always the first step.
An initial discussion will clarify whether mediation, conflict resolution, or consultancy is the right starting point.
When a matter is becoming difficult to resolve, escalating, or lacks a clear structure. Engagement does not require a matter to have reached formal proceedings. Earlier involvement typically produces better outcomes and greater flexibility.
Not necessarily. Cosil Solutions assesses your position and can work alongside legal advisors where required.
Many matters benefit from structured dispute consultancy before legal proceedings are considered. Where a solicitor is already instructed, Cosil can work alongside them.
You receive a clear assessment of your position, the risks identified, and structured next steps. There is no obligation to proceed further. The initial consultation is designed to give you clarity, not to create dependency.
If mediation does not result in a settlement, the parties remain free to pursue other options including formal proceedings.
Nothing said or disclosed during mediation can be used in subsequent proceedings, the process is entirely without prejudice. In practice, mediation frequently narrows the issues even where a full settlement is not reached, which reduces the scope and cost of any formal process that follows.
Contact
Start with a confidential discussion
If you are dealing with a property, housing, complaint or commercial dispute, an initial discussion will identify whether structured dispute support is appropriate and what the next step should be.
admin@cosilsolutions.co.uk
Phone
07587 065 611
Hours
Monday to Friday, 9:00 am to 5:00 pm
Book Directly
All enquiries are treated in confidence. We respond within one working day.
Engagements are scoped based on the nature, complexity, and stage of the matter.
