A seventeen year old Nairobi property dispute has erupted into its most explosive phase yet, with an advocate and a property buyer now fighting to keep a criminal prosecution permanently buried, even as fresh forensic evidence of forgery threatens to unravel a sale that has already survived two rounds of civil litigation.

At the centre of the storm is House No. 6, Casablanca Villas, a four bedroom maisonette on Dennis Pritt Road in Kilimani valued today at Sh45 million, and the advocate who brokered its sale in 2009 while acting, remarkably, for both the woman selling it and the stranger buying it.

Monica Jackline Wambui has gone back to court on two fronts simultaneously. She has filed a fresh suit at the Environment and Land Court seeking to cancel the 2009 transfer and reclaim her name on the title, and she has applied to the High Court to be joined to a judicial review case in which her former advocate, Chege Wainaina of Chege Wainaina and Company Advocates, and the woman who bought her house, Lucy Wairimu Mwangi, are trying to stop the Directorate of Criminal Investigations from ever arraigning them. Both matters are listed for mention on July 14 before Justice William Musyoka, the same judge who granted the ex parte stay Wambui is now fighting to lift.

A LAWYER ON BOTH SIDES OF THE TABLE

What makes this case extraordinary, and what the intervening years of civil litigation have never fully confronted, is the structural conflict at its centre. Chege Wainaina and Company Advocates did not merely represent Wambui in the sale of her own home.

The firm also received and held the entire Sh13.7 million purchase price as stakeholder on behalf of Mwangi, the buyer, and Wainaina personally witnessed the signatures of both parties to the transaction.

A 2020 High Court judgment in the related civil suit records, in the court’s own language, that the sale agreement was witnessed by Wainaina the advocate acting for both parties to the deal.

In ordinary conveyancing practice a single advocate acting simultaneously for a seller and a buyer in a high value transaction is treated as an irregularity serious enough to warrant scrutiny on its own. Here it sat at the very heart of a transaction now accused of forgery.

Wambui’s account, laid out in witness statements filed in both the 2009 civil suit and the current 2026 proceedings, is that she retained Wainaina in 2005 to handle her divorce and matrimonial property affairs after returning to Kenya from abroad, and that she surrendered to him her original title documents, national identity card, passports for herself and her late daughter, marriage certificate and bank statements, trusting him to act solely in her interest.

She says her mental health deteriorated during the period she was engaged with him, that she was admitted to Nairobi Hospital, and that conveyancing paperwork was smuggled into the psychiatric ward and her signature procured while she was in no state to understand what she was signing.

CRUDE FORGERIES, A FORENSIC REVIEWER ALLEGES

The claim that has injected new urgency into a case many assumed was long settled is a forensic handwriting review Wambui says she commissioned on the 2009 Letters of Instruction and Sale Agreement.

According to her supporting affidavit, the reviewer found that the signatures on those documents do not match her known handwriting and described them as crude forgeries. She further maintains that although Wainaina and Mwangi insist more than Sh12 million changed hands, a review of her bank records shows she never received a single shilling of the purchase price.

None of these allegations has yet been tested at trial, and Wainaina and Mwangi have consistently and vigorously denied them, but their emergence is precisely why Wambui argues the matter belongs before a criminal court equipped to interrogate fresh evidence, rather than behind the ex parte shield of a judicial review application she was never allowed to contest.

This is also not the only property in which Wambui has accused Wainaina of self-dealing.

Earlier proceedings in the long running dispute revealed that the same advocate had, during the same period he held her trust as her divorce lawyer, arranged the sale of a second property she owned, a flat at Dennis Court, to Posh Holdings Limited, a company in which court papers show Wainaina himself held a fifty percent shareholding.

Reporting on the wider dispute has also referenced separate correspondence, including a complaint lodged with the Law Society of Kenya accusing Wainaina of breaching his fiduciary duty across both properties, a complaint the professional body has confirmed receiving and is understood to still be reviewing.

If a pattern is what regulators are eventually asked to weigh, it is this: two properties belonging to the same vulnerable client, both allegedly steered by the same advocate toward outcomes that benefited him or his associates.

THE CIVIL COURTS SAID THE SALE STOOD

None of this is happening in a vacuum. The dispute over Casablanca Villas has already been through the Milimani Commercial and Tax Division, where Mwangi sued in 2009 for vacant possession after Wambui and her mother refused to move out.

In a 2020 judgment, Justice Grace Nzioka acknowledged that Wambui did suffer from a genuine mental illness but ruled that she had failed to prove she was mentally incapacitated specifically on the day the sale agreement was signed in January 2009, and ordered the villa handed over.

Wambui’s attempt to halt that judgment at the Court of Appeal was dismissed in May 2021, clearing the way for eviction, and the buyer’s lawyers subsequently demanded close to Sh8.8 million in legal costs on top of vacant possession.

Wambui has remained in the house regardless, which Mwangi’s side now characterises as seventeen years of illegal occupation and rental income collected at the buyer’s expense.

It is a civil record that appears, on its face, comprehensively settled in the buyer’s favour, and it is precisely that record which Wainaina and Mwangi are now leaning on to argue the criminal case is an abuse of process because the same facts were already tried and closed.

Wambui’s answer is that the civil courts were never asked to examine the forensic forgery findings now on record, nor the allegation that the underlying power of attorney used to redeem her title from I&M Bank was itself fraudulent, because that evidence did not exist, or was not presented, at the time.

It is a distinction the High Court will have to grapple with on July 14, and one that goes to a bigger question hovering over Kenya’s civil and criminal justice tracks: whether a civil finding on ownership can be used to permanently foreclose a criminal inquiry into how that ownership was obtained in the first place.

A STAY GRANTED WITHOUT THE VICTIM IN THE ROOM

The procedural detail Wambui is leaning on hardest may end up mattering as much as the substance. She says she learned only by chance, through the police investigator handling the file, that Justice Musyoka had already granted Wainaina and Mwangi leave and an interim stay a day before she was due to attend what should have been their plea before the Milimani Chief Magistrate’s Court in file MCCR/E328/2026.

She was never served, never joined, and never heard, despite being both the original complainant who triggered the Directorate of Criminal Investigations’ Land Fraud Unit probe and the defendant in the earlier civil suit.

Her application argues that Wainaina and Mwangi’s judicial review filing also failed to comply with the Fair Administrative Action Rules of 2024, even as it invoked the Fair Administrative Action Act to justify blocking the prosecution, a procedural inconsistency she wants the court to weigh heavily against them.

The Land Fraud Unit’s draft charge sheet, seen in the course of this investigation, proposes that Wainaina and Mwangi face trial on conspiracy to defraud, forgery, making and uttering false documents, obtaining land registration by false pretences and stealing, all in connection with the 2008 and 2009 transfer of the Casablanca Villas maisonette.

Those are precisely the charges an ex parte order, obtained without the complainant present, has for now kept off a court calendar.

WHAT JULY 14 WILL DECIDE

The mention before Justice Musyoka will not resolve the underlying fraud allegations, but it will decide something almost as consequential: whether Monica Wambui gets a seat at the table in a case that could permanently determine whether her former lawyer and the woman who bought her house ever face a magistrate, and whether the interim orders shielding them from arraignment survive contact with the objection of the one person they were never designed to hear from.

For an advocate whose own conduct sits at the centre of the forgery allegations, and a professional body reportedly still sitting on a fiduciary duty complaint against him, the stakes extend well beyond one Kilimani villa.

They go to whether dual representation, stakeholder control of a client’s purchase money, and a fifty percent stake in the company that absorbed a second property from the same client can continue to be litigated as a private property dispute rather than examined as an alleged pattern of professional betrayal.

Seventeen years after Monica Wambui first surrendered her documents to a lawyer she trusted with her divorce, the reckoning she has spent nearly two decades pursuing may finally hinge on a single procedural question in a Nairobi courtroom: whether the woman at the centre of the allegations is finally allowed to be heard.