Apartment Renovation Warranty: What to Ask Your Contractor

Renovation warranty only matters when the contract states term, responsibility zones, and defect remedy for finishes, MEP, and hidden work. Typical guides: 1–3 years on visible finishes, up to 3–5 years on plumbing and electrical if stages were accepted. Five years in advertising without contract annexes barely protects the owner.

Profmaster has worked in Moscow and the Moscow region since 2006. Below: what belongs in the contract, questions before the advance, and how warranty links to hidden work and leaks. Handover: acceptance checklist. Estimates: how to read them.

What a solid warranty includes

Element	Why it matters
Term by work category	Finishes and MEP age differently
Covered zones	Clear what is in and out
Claim procedure	Response time, contact, visit
Conditions to keep warranty	Use, third-party work
Hidden-work certificates	Evidence in disputes
Leak liability	Who pays neighbors and redo

In short: warranty works with acceptance and documentation, not instead of them.

If you simplify: ask not how many years, but what exactly and how fast you will come.

Main risk: large advance plus a long ad warranty with an empty warranty clause — a leak leaves you with an opened floor and no leverage.

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What should be in the contract

Section	What to check	Bad sign
Scope and estimate	Work list matches warranty	Warranty on everything with no list
Warranty term	Separate: finish, plumbing, electrical	One number, no detail
Hidden work	Certificates, photos before closing	We guarantee but no certificates
Leaks	Visit, term, responsibility zone	Not our area with no boundaries
Materials	Who replaces defect: contractor or supplier	All risk on owner
Claims	Written form, response deadline	Call the foreman only
Exclusions	Wear, third-party work	No section — dispute every defect
Handover	Acceptance act, punch list	Handover on a handshake

Compare estimates with Moscow cost guides: very low price often trades off weak warranty and no certificates.

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Warranty on hidden work

Hidden work is everything under screed, plaster, and floor tile: pipes, waterproofing, electrical in chases, screed, slopes.

Hidden zone	Document before closing	Typical defect
Bathroom	Waterproofing, pipes, slopes	Leak under tile
Kitchen	Water lines, drainage	Odor, slow drain
Electrical	Chases, cable fixing	Overheating, trips
Screed	Thickness, damper, beacons	Cracks, level errors
Ventilation	Penetrations, insulation	Condensation, mold

In short: hidden-work warranty starts at a signed certificate with photos, not on cleaning day.

Procedure: handover checklist. Without it, the contractor may say you drilled later — hard to disprove.

Main risk: closing a bathroom floor without waterproofing test. Redo with tile removal and neighbors costs more than any savings on that stage.

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Leaks: questions to ask separately

A leak is the most expensive warranty dispute. Ask before the advance:

1. Who is liable if the apartment below is flooded?
2. Is there a certificate for waterproofing with date and scope?
3. Response time for a claim — 24, 48, 72 hours?
4. Are risers replaced in scope or only branches?
5. How is remedy documented — act, estimate, deadline?

Situation	Desired contract wording
Leak from bathroom	Visit within agreed term; opening at fault party expense
Neighbor flood during work	Clear boundary: whose zone failed
Defect after 6 months	Waterproofing warranty applies — not wear and tear

If you simplify: for leaks you need fast response and clear liability, not only a long term.

Examples with staged acceptance — portfolio.

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Warranty on finishes and MEP

Category	Typical term*	Usually covered	Often excluded
Paint, wallpaper	1–2 years	Peeling with normal humidity	Mechanical damage
Tile	1–3 years	Detachment in normal use	Impact, wrong chemicals
Laminate/parquet	1–2 years	Gaps from installation	Water damage after handover
Electrical	2–5 years	Bad connections, panel	Overload after owner changes
Plumbing	2–5 years	Installation leaks	Owner fixture wear

*Use your contract; table is for negotiation orientation.

In short: different finishes — different terms. One line saying five years on everything deserves follow-up questions.

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15 questions before signing

1. Separate warranty terms for finish, electrical, plumbing?
2. How to file a claim — email, act, response time?
3. Hidden-work certificates with photo and video?
4. Who is liable for leaks and neighbor flooding?
5. What is free remedy vs paid visit?
6. Does warranty survive third-party kitchen install?
7. How does warranty tie to material brands in the estimate?
8. Any limit on visits?
9. Who pays for demolition to access a defect?
10. How are minor punch-list items recorded at handover?
11. Does warranty hold with staged payment — see payment scheme?
12. Contact for responsible person after handover?
13. Which documents transfer at final acceptance?
14. What if the company closes — legal entity and details on file?
15. Can you see a sample contract warranty section before advance?

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Warranty and payment

Payment pattern	Warranty risk	Safer model
70–100% advance	No leverage if visits refused	Pay after stage certificates
Cash without contract	No legal protection	Contract + certificates
Final payment before punch list	Contractor disappears	Hold 5–15% until closure

Main risk: paying in full before hidden work acceptance — warranty on paper, weak motivation to fix.

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Checklist: warranty before start

1. Different terms by work category in contract.
2. Claim procedure and visit deadline written.
3. Estimate includes waterproofing and liability.
4. Hidden-work certificates with media agreed.
5. Clear who replaces defective materials.
6. Exclusions listed, not buried.
7. Final acceptance per checklist.
8. Payment staged, not all upfront.
9. Contacts and response time after handover.
10. Owner keeps copy of contract and annexes.

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When to contact Profmaster

Contact Profmaster if:

• a contractor promises long warranty but won't show contract text;
• you need staged acceptance with hidden-work certificates;
• after handover there is a leak or cracks and no site visit;
• you compare bids and want consistent warranty and estimate standards;
• you plan capital renovation and need MEP liability in writing.

Services, portfolio, capital calculator, contacts.

Typical warranty mistakes

• Trusted the ad, did not read exclusions.
• Skipped hidden-work acceptance — no evidence later.
• Paid the balance immediately — punch list never closes.
• Third party drilled tile without approval — warranty disputed.

If you simplify: renovation warranty is contract + certificates + sensible staged payment. Ask concrete questions before the advance — then warranty stops being marketing and becomes a tool to protect the apartment and budget.