Valle Gran Rey · La Gomera · Canary Islands

Natural.
High quality.
La Isla Mágica · La Gomera.

We refurbish, advise and accompany – from the first viewing to the finished wall. Ecological building materials, technical building advice, construction support and purchase advice from a single source.

5+
Years on La Gomera
100%
Ecological materials
EN 1504
Standards-based concrete diagnosis
DE·EN·ES
Advice in three languages
Purchase support
Construction support
Clay plaster & tadelakt
Reinforced concrete repair
Moisture protection
Solid wood & parquet
Research · Planned research project · EN 1504

We know what lasts by the sea.
We research what lasts even longer.

Salt-laden sea wind, high humidity, strong sun: in the Canary Islands reinforced concrete ages faster than anywhere on the mainland – and the rules for dealing with it are known. We know the materials not from the data sheet but from our own hands: repair mortars, corrosion protection, waterproofing, clay and lime plasters – all applied by ourselves, in this air, on these components. We know what causes problems during application, what is still standing after years and what is not. My planned research project (a doctorate is intended) starts exactly there: a standards-based, digital damage assessment to EN 1504 – asking how repairs in areas of high chloride exposure can be made even more durable. Preparation in the Master's programme in Building Protection at Hochschule Wismar; the tool: ConcretoCadastre.

To the research project → Qualifications & credentials
Planned research project
Durability of reinforced concrete repair under high salt and chloride exposure – digital damage assessment to EN 1504, data basis: residential complexes on La Gomera · doctorate intended
Master's in Building Protection
Hochschule Wismar · from winter semester 2026/27
First-hand knowledge of materials
Every material applied by ourselves – strengths, weaknesses and durability known on site
ConcretoCadastre
EN 1504 app · Component register · DE · ES · EN
Craft & training
Bremen Chamber of Crafts, registered 2004 – no longer active in Germany · Several years of training apprentices as bricklayer and concrete builder (Maurer und Betonbauer), drywall installer (Trockenbaumonteur) and painter and varnisher (Maler und Lackierer).

Earth, wood
& craftsmanship.

More and more people are leaving mainland Europe and finding their anchorage on La Gomera. They buy houses and apartments – usually from Germany, under time pressure, without local contacts. This is exactly where we come in: as a reliable partner who accompanies the purchase, keeps an eye on construction quality and carries out the refurbishment with ecological materials.

“One contact for everything – from the notarial purchase contract to the finished clay wall.”
Our three service areas
Technical advice
Purchase advice &
purchase support
  • Viewing & technical description of the property's condition
  • Condition report with cost estimate
  • Support at the notary appointment & contract documents
  • Coordination with lawyers, gestor & estate agents
  • Communication in German or English – also after the purchase
Fees: flat fee
Technical support
Construction support &
quality control
  • Checking and comparing quotes
  • Quality control on behalf of the owner
  • Photo documentation and reports in German or English – also from a distance
  • Support at handover for work in your apartment or house: on-site check and list of defects – acceptance is declared by the client or by a person the client has authorised in writing
Fees: flat rate or hourly, by agreement
Craft & execution
Refurbishment
& craftsmanship
  • Reinforced concrete repair, moisture protection & demolition
  • Plastering – conventional & clay plaster
  • Painting inside & outside
  • Complete bathroom refurbishment
  • Balconies & terraces – tiling, waterproofing, railings
  • Clay plasters, tadelakt, lime & ecological surfaces
  • Solid wood, parquet, interior fit-out
Invoicing: by time / unit prices
For buyers from abroad
You buy on La Gomera –
we are your local anchor.
1
Technical condition description
Before you buy, we check condition, fabric and hidden defects – with a written report in German or English.
2
Notary appointment & contract support
We coordinate with lawyer, gestor and notary – so that you miss nothing important in Spanish.
3
Refurbishment advice after the purchase
Straight afterwards we work out with you the measures, cost estimate, schedule and choice of materials.
4
Construction support from a distance
Regular reports, photos and video calls – your project keeps moving even when you are not here.
Why it works
German buyers are the largest group among foreign property buyers in the Canary Islands – and most of them know nobody on La Gomera. We speak their language and know the local authorities, notaries and tradespeople.
Fees
Purchase advice is invoiced as a flat fee; construction support as a flat rate or by the hour, by agreement. Transparent and easy to calculate.
Advice in German & English
Present on site
Full service
Reinforced concrete
repair & moisture protection

La Gomera's climate – salt-laden sea wind, high humidity, strong UV radiation – systematically attacks reinforced concrete structures. Chlorides penetrate, the reinforcing steel corrodes, the concrete spalls. We detect, diagnose and repair – before a crack becomes a structural problem.

Free form: create a damage report →

Qualifications & credentials
Trained.
Researching.
On site.
“Buy a property on La Gomera with knowledgeable support that explains the condition of the property to you before you sign.”

Dipl.-Ing. (FH) Fachrichtung Architektur (German university degree, Hochschule Bremen)

Frank Thomaschewski
Dipl.-Ing. (FH) Fachrichtung Architektur (German university degree, Hochschule Bremen)
Hochschule Bremen
Grade 1.7
EN 1504
Master's programme in Building Protection (from winter semester 2026/27)
La Gomera
DE · ES · EN
Original DE
Hochschule Bremen
Degree certificate
Dipl.-Ing. (FH) Fachrichtung Architektur (German university degree, Hochschule Bremen) · grade 1.7
6 Feb 2001
PDF
ES · Sworn
Sworn translation
Degree certificate · sworn translation
Certified · Abazari no. 7590
7 Apr 2024
Sworn Spanish translation available on request
Original DE
Hochschule Bremen
Diploma examination transcript
Architecture · overall grade 1.7
31 Jan 2001
PDF
ES · Sworn
Sworn translation
Examination certificate
Certified · Abazari no. 7590
7 Apr 2024
Sworn Spanish translation available on request
Craft qualifications & certificates
HWK Bremen
Bremen Chamber of Crafts
Bricklayer and concrete builder
Entry in the register of crafts
29 Mar 2004
PDF
HWK Bremen
Bremen Chamber of Crafts
Painter and varnisher
Register of crafts · incl. plasterer
29 Mar 2004
PDF
Course
Construction trade association (Bau-BG) Hanover
Occupational safety course
Attendance · Hochschule Bremen
Jan 1995
PDF
Certificate DE
Bremen Academy of Crafts
Certificate of competence: asbestos cement products
TRGS 519 no. 2.7 · 15 hours · DE
Oct 2002
PDF
Further education · from winter semester 2026/27
Master's programme in Building Protection
Hochschule Wismar

Specialised master's programme (distance learning, WINGS – Hochschule Wismar) deepening building diagnosis, repair and structural preservation – and preparing a planned doctorate.

Research · Planned research project (doctorate intended)
Digital damage assessment
of reinforced concrete to EN 1504

Standards-based, digital condition survey and damage assessment for reinforced concrete components – developed on residential complexes on La Gomera and to be validated as part of a planned research project. The tool: ConcretoCadastre.

Bremen Chamber of Crafts, registered 2004 – no longer active in Germany
Several years of training apprentices · Bricklayer and concrete builder · Drywall · Painter and varnisher
TRGS 519 · Asbestos certificate of competence
Asbestos on La Gomera: many buildings from the 1970s–90s contain firmly bound asbestos in tiles, fibre cement boards and roofing. The German certificate serves as proof of competence; a Spanish qualification under Real Decreto 396/2006 is not held. Work on asbestos-containing materials in Spain is governed by RD 396/2006 (RERA-registered company, approved work plan) — we advise, but do not carry out such work ourselves.
Reference · Complejo Laurisilva · Valle Gran Rey · La Gomera

One complex.
Three clearly separated roles.

The Complejo Laurisilva is a residential complex on La Gomera. We have been working in this complex for years – for individual owners on their apartments. We have served as volunteers on the building committee and made information papers available to the owners. Separately from the property, we are developing a digital diagnostic procedure for reinforced concrete. We keep these three roles strictly apart. Our work on the apartments ranges from simple repairs to complete refurbishment.

Individually
commissioned by owners –
each separately
EN 1504
Standards-based
concrete diagnosis
DE · ES · EN
Documents for
all owners
4 information papers
made available
to the community
Balcony repair
reinforced concrete · before
Balcony repair
reinforced concrete · after
Columns
exposed reinforcement
Columns
reprofiling
Riser shaft
repair
Complete refurbishment
apartment · clay plaster
Role 1 · Commissioned by individual owners
Refurbish, repair,
accompany.
Apartment refurbishments – from repairs to complete refurbishment with clay plaster and natural materials
Reinforced concrete repair of components of the owner's own apartment, such as balconies – to EN 1504
Technical building advice to individual owners on their apartment, including during the community's works
Photo documentation and damage description for the owner, for submission to insurer and community
For the owners' association, with the approval or at the request of the administration: repairs to riser pipes, repair of columns and removal of a leak in wall and floor in an outdoor area.
CLIENTS: INDIVIDUAL OWNERS · EACH SEPARATELY · OWNERS' ASSOCIATION: WITH APPROVAL OF THE ADMINISTRATION
Role 2 · Volunteer work within the owners' community
Volunteer on the committee.
Information papers for the owners.
Volunteer on the building committee
Volunteer work on the building committee: technical advice to the committee and owners on damage, responsibilities and procedure
Information papers in three languages: “The building committee – tasks and limits”, “The roles on site under the LOE”, owner information, guides to standards
Technical information papers · made available
Information paper on repair principles to EN 1504 (general explanation, not a design)
Orientation document Ownership & Responsibility and Process guide for damage reports – reviewed by a lawyer, DE · ES · EN
Explanation of common test methods for reinforced concrete components and concrete testing
INFORMATION PAPERS MADE AVAILABLE
Role 3 · Research & digitalisation – separate from the property
One procedure
for complexes of every kind.
Systematic diagnostic procedure for reinforced concrete to EN 1504 – from finding to quantity take-off
ConcretoCadastre, the app for the component register – developed for residential complexes of every kind, not tied to one property
Field of application of the planned research project on digital damage assessment
OWN RESEARCH & DEVELOPMENT PROJECT
Our stance: there we work on behalf of and in the interest of individual owners. An owner who commissions us receives a clear technical description: what is damaged, possible causes and sensible next steps. For owners at the Complejo →

ConcretoCadastre.
The EN 1504 app
for reinforced concrete.

EN 1504
Works offline
DE · ES · EN

concretocadastre.com →

Anyone who wants to refurbish a reinforced concrete complex first needs answers to three questions: what is damaged, how badly, and how much of it? ConcretoCadastre turns the on-site inspection into a traceable damage register to EN 1504 – component by component, with automatic damage classification and quantity take-off. The procedure was developed on residential complexes on La Gomera and is to be scientifically validated as part of the planned research project.

Condition survey – locate components, record findings, assign photos
Damage classification – automatic to EN 1504, standardised and traceable
Quantity take-off – reliable quantities as a basis for quotes
Component register – one register for the whole complex, maintainable over years
Reports – traceable documentation for owners, community and insurer
Offline on site – works without network in underground car park and stairwell
“First know what is broken – then decide what to repair.”
Example projects

What we deliver for individual owners.

Four refurbishment examples on La Gomera — carried out with ecological materials and local tradespeople.

View all projects →
Materials & craft
All surfaces: clay plaster, design plaster, Tadelakt →
Ecological materials
Claytec · Conluto
Clay plaster
Natural air conditioning · moisture-regulating
Claytec
YOSIMA design plaster
146 earth tones · no synthetic pigments
Kreidezeit
Tadelakt & lime
Water-repellent · polished · hammam quality
Trendwende · Timberwise
Parquet & plank flooring
Solid wood · oiled · oak, walnut, chestnut
Craft & refurbishment
Building trades
Damp-proofing & moisture protection
Horizontal barrier · waterproofing · technical drying
Concrete repair
Reinforced concrete repair
Chloride protection · crack injection · concrete protection
Renovation
Painting & tiling
Inside & outside · mineral paints · natural stone
Complete renovation
Bathroom refurbishment
Everything from a single source · tiling, sanitary ware, plaster
For owners in the Canary Islands
Water damage, crack, spalling –
what you are entitled to, and what to do now.

Three things most owners do not know: if the cause lies in the common elements, remedying it is the community's job – not yours. Towards the building insurer a two-year limitation period applies. And the costs of a professional damage assessment can be recoverable. We provide the tools for this free of charge – no mandatory forms, no request for your address.

Free · no registration
Damage report, template letter,
information sheet, checklist
  • Online form: damage report in five minutes, in Spanish, with a deadline
  • Template letter DE/ES, information sheet on insurance and deadlines, 48-hour checklist as PDF
  • Who is responsible? · Deadlines · Glossary Spanish–German
All free tools →
Owners' area · Complejo Laurisilva
How a damage report
works
  • Responsibility is not insurance cover – the distinction where almost every dispute begins
  • Five steps, four outcomes, who is responsible for what
  • Orientation document and process guide, reviewed by a lawyer, DE · ES · EN
Log in (credentials for owners) →
Individual case · commissioned separately
Damage findings
& support
  • Cause instead of symptom: findings, possible causes, consequential damage
  • Documentation and cost estimate for insurer and community – not a peritación (formal expert report)
  • Support in your dealings with insurer, administrator and community – commissioned by you
Send enquiry →

General information, not legal advice for the individual case. The applicable regulations, the deed of division and the respective insurance conditions are decisive.

Your project
starts here.

Whether purchase advice, construction support or refurbishment – we answer in German, Spanish and English.

Address:
Complejo Laurisilva, Avenida El Llano 2, Local 9
38870 Valle Gran Rey, La Gomera

Email:
[email protected]

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