Find & compare renovation companies in Berlin: a guide for property owners

The most reliable way to find a reputable renovation firm in Berlin is through the Berlin Chamber of Crafts business database, trade guilds (such as SHK-Innung Berlin) and personal recommendations — and you should always compare several businesses. Yet very few do: only around 23 per cent of project owners obtain comparison quotes at all.³ Berlin's market is fragmented and difficult to navigate — and choosing the wrong firm is expensive. This guide explains where to find firms, which criteria to compare, how much advance payment is permissible and how to protect yourself against poor workmanship and insolvency.

Key points at a glance

• Berlin has around 2.480 main construction businesses, 88,8 % with fewer than 20 employees — a fragmented market that is difficult to compare¹
• Mandatory credibility criteria: entry in the Register of Crafts (for regulated trades), 5 years of defects liability for buildings (§ 634a BGB) and a written contract
• High advance payments before work starts are a warning sign — link interim payments to verifiable progress (§ 632a BGB)
• Insolvency risk is real: construction industry insolvencies rose by 4,7 per cent in 2025⁹ — check creditworthiness, keep advance payments low
• An average of around 31 defects is identified per construction project⁴ — your choice of firm has a decisive influence on construction quality

How do I find a reputable renovation firm in Berlin?

The most reliable sources are the Berlin Chamber of Crafts business database, specialist trade guilds and personal recommendations. The Berlin Chamber of Crafts has around 29.600 member businesses (as at the end of 2024);² specifically in main construction, there were around 2.480 businesses with about 26.400 employees in mid-2023 — and 88,8 per cent of these businesses have fewer than 20 employees.¹ For you, this fragmented market means major differences in quality and price, and many businesses that do not advertise publicly.

• Chamber of Crafts business database: Lists registered businesses by trade and district — an initial filter for registration and qualifications.
• Trade guilds: Specialist guilds such as SHK-Innung Berlin offer their own contractor search and even a mediation service for disputes.¹⁰
• Recommendations: Experiences from people you know or your homeowners' association remain the most reliable source.
• Referral portals: Convenient, but check referred businesses against the same criteria described below.

Whichever route you use, obtain at least three quotes. Our guide explains how to make them comparable in a structured way Comparing contractors' quotes; the most common search mistakes are covered in Mistakes when finding contractors.

Which criteria should I use to compare renovation firms?

When comparing, clearly distinguish legally mandatory criteria from recommended ones. Only then can you recognise what a firm must prove — and what provides additional reassurance.

Whether a quote's price is plausible often only becomes clear through comparison — the ranges for the same work are considerable. Recognise overpriced quotes by the typical warning signs.

How much advance payment can a renovation firm demand?

This depends on the contract type. For a normal contract for work covering individual trades, there is no fixed statutory percentage limit: the business may request interim payments equal to the value of work already performed (§ 632a BGB), and you may retain a reasonable portion for defects.⁷ An upper limit applies only to consumer construction contracts — new builds or substantial conversions delivered by a single provider: total interim payments must not exceed 90 per cent of total remuneration, and you receive completion security of 5 per cent with the first interim payment (§ 650m BGB).⁸

As a practical rule of thumb regardless of contract type, deposits exceeding 20 per cent before work starts are a warning sign. Reputable businesses tie interim payments to verifiable progress rather than insisting on advance payment. (The special case of a property developer contract — land and construction from one source — is additionally subject to the Estate Agents and Property Developers Ordinance (MaBV), with its own instalment rules.)

How do I protect myself against the renovation firm's insolvency?

The risk is not theoretical: construction industry insolvencies increased by 4,7 per cent year on year in 2025.⁹ Across all economic sectors, insolvency figures in 2025 were around one third above 2019 levels. If your firm becomes insolvent mid-project, advance payments are often lost. To limit the risk:

• Check creditworthiness beforehand: Search the commercial or company register and look for insolvency and payment order proceedings.
• Keep advance payments low: Link interim payments to completed, accepted stages of work (see above).
• Retention: Retain part of the remuneration until defect-free acceptance.
• Firm's insurance: An existing public liability policy covers damage caused by the business.

General contractor or individual specialist firms?

With separate contracts, you appoint each trade individually — this is usually cheaper, but requires you to manage coordination and interfaces yourself. A general contractor (GU) coordinates all trades and provides defects liability from one source, but charges a coordination surcharge — usually around 10 to 15 per cent based on our market experience.

Which route is worthwhile depends on scope, time and your construction experience. Our guide covers the details of general contractors in Berlin — contract models, risks and when a GU pays off. Specifically for larger firms, read how to compare construction companies.

What should Berlin property owners pay particular attention to?

Three Berlin-specific factors directly influence your choice of firm. First, workload: in-demand trades in Berlin often have waiting times of 4 to 12 weeks, or three to four months in peak season — a business available immediately should at least prompt questions. Second, prices: based on our market experience, Berlin is 10 to 25 per cent above the national average, especially for labour-intensive trades. Third, building fabric: in Gründerzeit neighbourhoods and conservation areas, the firm must know listed building and conservation requirements — ask specifically for relevant references. More in our overview House renovation in Berlin and specifically on Renovating older buildings in Berlin.

Defects statistics show why this care is worthwhile: an average of around 31 defects is identified per construction project.⁴ If you have a specific quote, an independent quote review can reveal excessive prices and missing items before you sign.

Checklist before signing the contract

Before appointing a renovation firm, these points should be settled:

• Entry in Register of Crafts (and master craftsman qualification where relevant) checked
• Current proof of public liability insurance available
• Creditworthiness checked: commercial or company register, no ongoing insolvency or payment order proceedings
• At least three comparable quotes obtained
• Written contract with clear specification, dates and identification of fixed-price and unit-price elements
• Payment schedule linked to verifiable progress, deposit below 20 per cent
• Defects liability (5 years BGB or 4 years VOB/B) regulated in the contract
• Retention agreed until defect-free acceptance

Frequently asked questions

How do I find a reputable renovation firm in Berlin?

The most reliable routes are the Berlin Chamber of Crafts business database, trade guilds (such as SHK-Innung Berlin with its own contractor search and mediation service) and personal recommendations. Look for Register of Crafts entry, public liability insurance and verifiable references, and always obtain several quotes — only around 23 per cent of project owners do so.

How can I recognise an untrustworthy renovation firm?

Warning signs include a high advance payment before work begins, missing or unverifiable Chamber of Crafts registration, exclusively verbal agreements, no written contract and pressure to sign quickly. Missing proof of insurance is another alarm signal. A reputable business readily discloses registration, insurance and references.

How much advance payment can a renovation firm demand?

Under a normal contract for work, § 632a BGB allows a business to request interim payments equal to the value of work already performed — there are no fixed percentage limits. For a consumer construction contract (new build or substantial conversion from one source), total interim payments must not exceed 90 per cent, and you receive 5 per cent completion security (§ 650m BGB). As a rule of thumb, deposits exceeding 20 per cent before work starts are a warning sign.

General contractor or individual specialist firms — which is better?

Separate contracts are usually cheaper, but you bear coordination and interface risks yourself. A general contractor coordinates all trades and provides liability from a single source, but charges a coordination surcharge, usually around 10 to 15 per cent based on our market experience. The right route depends on scope, time and your construction experience.

How do I protect myself against my renovation firm's insolvency?

The risk is real: construction industry insolvencies rose by 4,7 per cent in 2025. Keep advance payments low, link interim payments to verifiable progress and check creditworthiness before contracting (commercial/company register, payment order proceedings). Retention until acceptance and the firm's existing public liability insurance further reduce the risk.

Would you like quotes directly from prequalified specialist firms in Berlin? Use our referral service. Further guides on selection and review: Mistakes when finding contractors, Comparing contractors' quotes and Warning signs of overpriced quotes.

Sources

1. Berlin-Brandenburg Statistics Office, Berlin main construction industry (2.480 businesses, 26.434 employees, 88,8 % with fewer than 20 employees; as at June 2023)
2. Berlin Chamber of Crafts, figures, data and facts (29.558 member businesses, as at 31.12.2024)
3. Verband Privater Bauherren (VPB) / baulinks.de: only around 23 % of project owners obtain comparison quotes
4. Bauherren-Schutzbund e.V. (BSB) / Institute for Building Research (IFB), average of around 31 defects per construction project (700 quality inspections, 2020–2024)
5. § 634a BGB, limitation of defects claims (5 years for buildings)
6. German Crafts Code (HwO), mandatory Register of Crafts entry and master craftsman requirement (regulated trades, Annex A)
7. § 632a BGB, interim payments according to the value of work performed
8. § 650m BGB, interim payments and completion security for consumer construction contracts (max. 90 %, 5 % security)
9. Creditreform, insolvencies in Germany, 2025: construction +4,7 % year on year (as at 08.12.2025)
10. SHK-Innung Berlin, contractor search and mediation service