Practice Areas 

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Divorce & Separation

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Dissolution of Marriage

Dissolution of Marriage
Attorney in Illinois

As a DuPage County divorce attorney, I know that an Illinois divorce involves decisions about property, finances, parenting, and support that will define your life going forward. The process rewards preparation — and punishes improvisation.

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Dissolution of Marriage in Illinois

No-fault doesn't mean simple.

Illinois is a no-fault divorce state — which means neither spouse has to prove wrongdoing to end the marriage. But no-fault doesn't mean uncomplicated. Dissolution of marriage under Illinois law is a formal legal process that determines how marital property is divided, whether spousal maintenance is awarded under 750 ILCS 5/504, and — when children are involved — how parenting time and decision-making authority are allocated.

These determinations carry real weight. A property settlement entered by an Illinois judge is largely final. A maintenance award shapes both spouses' financial lives for years. A parenting arrangement becomes the baseline from which any future modification must depart. Getting the initial outcome right matters far more than most people realize when they're in the middle of it.

We take the time to understand your full financial picture and your priorities before we advise on strategy. That means honest assessments of what Illinois courts are likely to do, realistic timelines, and a plan built around your actual situation — not a template applied regardless of the facts.

Illinois Law — The Governing Standard

Under 750 ILCS 5/503, Illinois divides marital property equitably — not necessarily equally. Courts consider the length of the marriage, each spouse's economic circumstances, contributions to marital and non-marital property, and any valid prenuptial agreement. Equitable means fair given the specific facts of your case — which is why how your attorney builds and presents that case matters significantly to the outcome.

The dissolution process in Illinois courts.

Most clients come to us with a general sense of what divorce involves but limited clarity on how it actually unfolds. Here is what the process looks like from first consultation through final judgment — and where the critical decision points are.

Path 01

Filing & Service

The dissolution petition is filed with the circuit court in the county where you or your spouse resides. Under 750 ILCS 5/401(a), Illinois requires a six-month separation period as proof of irreconcilable differences — though this period can be waived by agreement of both spouses. Your spouse is formally served and given time to respond. Temporary orders may be entered covering support, property use, and parenting while the case proceeds.

Path 02

Financial Disclosure & Discovery

Both spouses are required to fully disclose financial information — income, assets, debts, and expenses. In complex cases, this involves formal discovery: subpoenas, interrogatories, depositions, and expert witnesses. In straightforward cases, voluntary document exchange is often sufficient. The completeness of this process shapes everything that follows.

Path 03

Negotiation, Mediation or Trial

Most Illinois divorces resolve through negotiated settlement. We approach every negotiation prepared to try the case — which consistently produces better results at the table. When agreement isn't possible, we are fully prepared to present your case before the court with jurisdiction over your matter.

On timelines: An uncontested divorce with full agreement on all issues can be finalized in two to four months. Contested cases involving property disputes, business valuations, or custody disagreements typically take twelve to twenty-four months — sometimes longer when complexity warrants. We'll give you a realistic projection at your first consultation.

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Property Division

What gets divided — and how Illinois decides.

Property division is often the most consequential part of an Illinois divorce. The decisions made now — about real estate, retirement accounts, business interests, and debt allocation — are largely final once the judgment is entered. Here's what's typically on the table and how Illinois courts approach each category.

Marital Property

What's Subject to Division

Marital property includes most assets and debts acquired during the marriage — regardless of whose name is on the title. Real estate, retirement accounts, investment portfolios, business interests, and vehicles acquired during the marriage are generally marital. Gifts and inheritances received by one spouse are non-marital, as are assets owned before the marriage — though commingling can complicate these distinctions significantly.

Non-Marital Property

What You Keep — If You Can Prove It

Non-marital property is yours to keep — but you have to document it. Assets owned before the marriage, inheritance, and gifts to one spouse are non-marital under Illinois law. The challenge is tracing: over a long marriage, non-marital assets are often commingled with marital ones, and the burden of proving what remains non-marital falls on the spouse claiming it. We build this documentation early.

Real Estate

The Marital Home & Other Properties

The marital home is often the most emotionally and financially significant asset in a divorce. Options include sale and division of proceeds, one spouse buying out the other's equity, or a deferred sale arrangement in cases with minor children. Each option carries different financial and tax implications that we analyze as part of your overall settlement strategy.

Retirement & Benefits

Accounts That Require Special Handling

Retirement accounts — 401(k)s, pensions, IRAs — are marital property to the extent they were contributed to during the marriage. Dividing them without properly drafted orders can trigger significant tax consequences and penalties. Each account type requires its own approach, and errors here are expensive and difficult to fix after the fact.

What you can expect from O'Brien Family Law.

Divorce representation isn't just about knowing the law — it's about building the right strategy for your specific situation, preparing more thoroughly than the other side, and giving you an honest assessment at every stage.

01

Full Picture Before Strategy

We understand your complete financial situation — assets, debts, income, and priorities — before advising on approach. Strategy without facts isn't strategy.

02

Honest Assessments

We tell you what Illinois courts are likely to do — including the weaknesses in your position. Clients who understand their realistic range of outcomes make better decisions.

03

Built to Negotiate

We build every file as if it will be tried — which consistently produces better negotiated outcomes. Opposing counsel knows the difference between a prepared attorney and an unprepared one.

04

Ready for Trial

When settlement isn't in your interest, we go to trial. We regularly appear across the counties we serve — local familiarity that shapes how we prepare and present every case.

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Through the Judgment

Once the judgment is entered, we help ensure it's properly implemented — title transfers, compliance, enforcement, and modifications as life continues to change.

What clients ask before their first consultation.

These are the questions prospective clients most often raise before their first consultation. We've answered them honestly — because informed clients make better decisions, and that's better for everyone.

Does it matter who files for divorce first in Illinois?

Generally, no — Illinois is a no-fault state and courts don't favor the petitioner in terms of outcomes. There can be strategic reasons to file first in specific circumstances — establishing venue in a particular county, or filing before a spouse does in a situation where temporary orders matter. Whether to file first, and when, is something we discuss at the initial consultation based on your specific circumstances.

Can we agree on everything and avoid a contested hearing?

Yes — the majority of Illinois divorces resolve through negotiated agreement. An uncontested divorce still requires a court filing and a judge's approval of the final judgment, but it can be finalized with minimal court involvement. We help clients reach comprehensive agreements that are drafted correctly, cover all the necessary issues, and hold up over time.

How is debt divided in an Illinois divorce?

Marital debts — mortgages, credit cards, business liabilities incurred during the marriage — are subject to equitable division alongside assets. One important nuance: a divorce decree allocating a debt to one spouse doesn't eliminate that spouse's liability to the creditor if both spouses signed the original obligation. Creditors aren't bound by divorce judgments. We address this in settlement drafting to protect clients from future exposure on joint debts.

Will my divorce be public record in Illinois?

Illinois divorce proceedings are generally public record — the petition, judgment, and most court filings are accessible. Financial disclosure documents are sometimes filed under seal in complex cases involving significant assets or sensitive business information. If privacy is a concern, we discuss the available options at the outset and build a strategy that minimizes unnecessary public exposure.

What happens to the house when we divorce?

The marital home is among the most contested assets in most divorces. Options include selling the property and dividing proceeds, one spouse buying out the other's equity, or a deferred sale arrangement in cases with minor children. The right approach depends on equity, mortgage obligations, each spouse's financial position, and the needs of any children involved. We analyze this as part of the overall property settlement.

What does a divorce cost in Illinois?

Cost depends almost entirely on how contested the case is. An uncontested divorce where both parties have agreed on all issues can be resolved for a modest flat fee. A fully litigated case involving complex assets, custody disputes, and expert witnesses costs significantly more. We discuss fees transparently at the initial consultation and provide honest projections based on the issues we anticipate.

"Getting the initial judgment right matters far more than most people realize when they're in the middle of it."

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Service Area

Dissolution of Marriage Attorney in Chicagoland

O'Brien Family Law handles dissolution of marriage proceedings throughout Cook, DuPage, Kane, Kendall, Lake, and Will County. We regularly appear in the circuit courts of each county — bringing local familiarity that shapes every strategic decision from the first filing through the final judgment.

Whether your case is in Wheaton, Naperville, Aurora, Joliet, or any of the surrounding communities, we're positioned to represent you effectively from the outset.

The first step is just a conversation.

No forms to fill out before we'll talk to you. No obligation after. We'll listen to your situation, tell you where you stand, and let you decide what comes next.

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(630) 755-3442