Buying land crossed by a high-voltage line in Spain: checks before arras

If an electricity line crosses a Spanish plot or passes close to it, do not decide from a distance measured on a listing photograph, a general map or the statement that it is “away from the house area”. Identify the installation and operator, survey supports, conductors and access routes, obtain the file that defines the easement, and ask the project professional to overlay the intended house, garden, trees and construction operations. The registered, administrative, technical and physical positions should agree before you sign arras.

A Spanish servidumbre de paso de energía eléctrica, or statutory electricity wayleave/easement, can include conductors over the land, towers or poles, earthing, access for inspection and repair, temporary occupation and necessary vegetation work. It is not an electricity connection for the plot. A line can restrict the land without offering a connection point for your future home.

Identify the line before measuring its effect

Start with the full location, cadastral references, Land Registry property and boundaries being sold. Place towers or poles, foundations, visible conductors, access tracks, trees and buildings on a topographic survey. Take photographs from a safe position. Do not approach conductors, climb or touch equipment, open cabinets or fly a drone where it could create an electrical risk. Report damaged equipment to the operator or the appropriate emergency service.

Ask the seller which company operates the installation, what voltage and configuration the file records, whether there is a line or support identifier, and what notices or agreements are held. Red Eléctrica provides InfoRED for information about lines it owns, but not every high-voltage line is part of Spain’s transmission grid. A distributor, another operator or a private installation may be involved. The appearance of a tower proves neither its operator nor its voltage.

Compare the survey with the cadastral, aerial and planning map workflow. These viewers locate questions; they do not replace the project survey, the installation file or site verification. If a support or corridor appears to cross an uncertain boundary, complete the Spanish boundary investigation before calculating the land left for the project.

Obtain the title and scope of the electricity easement

Spain’s Electricity Sector Act defines the statutory easement and distinguishes overhead flight from underground occupation. It also includes access and temporary occupation needed for construction, inspection, maintenance or repair. Royal Decree 1955/2000 develops the role of supports, access, vegetation and the relationship with the owner. Obtain the property-specific instrument instead of relying on a general explanation.

Review the nota simple and registered documents, but do not assume that the absence of one sentence settles the position. Ask your legal adviser to examine the title, public-utility or authorization file, affected-assets plans, occupation records, private agreements, registration and match with the land. Historic compensation can help explain the file; do not assume it transfers to the buyer or removes the burden.

The evidence should answer which installation is involved, which property and area are affected, where the conductors, supports and access lie, who may enter and why, what limitations were recorded, and whether later changes occurred. If the line was diverted, undergrounded, uprated or otherwise modified, obtain the decision and current plan. A cable no longer visible on one visit does not by itself cancel an old registered burden.

Do not turn an online distance into a building envelope

The Spanish high-voltage regulation and ITC-LAT technical instructions calculate safety distances from the real line characteristics, voltage, conductors, sag, displacement and most adverse conditions. A competent professional must use confirmed data and the actual proposal. This guide gives no universal setback because a number copied alone may belong to another voltage, crossing or design condition.

Overlay the technical and legal corridor on the plot’s permitted floor area, footprint and planning setbacks. Include the house, porch, pool, retaining walls, crane, scaffolding, construction access, earthworks and mature planting. Spanish law allows fencing or building only while preserving the easement and with the competent administrative authorization where applicable. That is not automatic planning permission.

Ask the ayuntamiento, the municipal council, about the defined project and ask the competent energy authority how the effect or authorization is to be checked. Competence and procedure can differ between the State and autonomous community according to the installation. The parcel-specific planning information request should show the proposed house and the infrastructure, not merely ask whether the land is classed as urban.

Keep evidence within the question it can answer

A transmission-grid map is an orientation tool, not a legal setting-out of the easement. A nota simple helps investigate rights but does not calculate electrical clearances. A topographic survey locates features but does not decide the technical rules. Keeping those functions separate prevents a genuine document from being used to answer a question outside its scope.

Check access, vegetation and construction, not only the finished house

The easement can include entry for surveillance, maintenance and repair. Plot the route the operator uses or may need, gates, slopes, walls and working areas. Ask what must remain accessible and how fencing, dogs, crops or future work will be coordinated. A maintenance route is not automatically your legal access to the property; use the separate right-of-way and access checks for that question.

The technical rules address vegetation and the applicable safety clearances. Before designing trees, pergolas or a garden below the conductors, obtain written limits from the operator and professional. Do not prune or fell close to the line yourself. Establish who may carry out the work, how it is coordinated and which records will be retained.

Construction may be more demanding than the finished layout. Cranes, concrete pumps, long components, scaffolding and stockpiles change the risk. The design team, the safety coordinator where the project requires one, and the contractors should know about the line at concept stage and prepare safe methods. Put those conditions into the programme and budget rather than discovering them when machinery arrives.

Compare three outcomes before fixing the land value

Compatible project: the house and construction preserve the confirmed corridor and access and obtain the required responses. Redesigned project: the house moves, loses footprint, changes access or omits outdoor elements. Decisive uncertainty: the operator is not identified, the affected-assets plan is missing or no authority will answer the defined proposal. In the third case, a lower price does not create feasibility.

Hypothetical buyer A measures a listing photograph and reserves because the pylon “looks far enough away”. Buyer B commissions a survey, obtains the file, confirms the operator and data, overlays the concept design and carries unresolved evidence into the arras contract. B is not guaranteed permission, but has an auditable route to decide.

Integrate the result with the wider plot checks for a Spanish building project and site costs. Do not invent a per-metre discount or automatic loss in value. The economic effect depends on feasible use, geometry, project, rights and evidence and may require an independent valuation.

Carry essential answers into the arras agreement

• Are the operator, line, voltage, supports and administrative file identified?
• Do the property, boundaries, conductor flight, access and affected-assets plan match?
• Have the nota simple and titles been compared with the administrative position?
• Has a competent professional overlaid the house and construction phase using real data?
• Have the municipality and energy authority answered the defined proposal?
• Are maintenance access, vegetation and external elements addressed?
• Does each decisive gap have an owner, date and reviewed contractual consequence?

Arras is the deposit agreement commonly signed before a Spanish purchase completes. Ask your lawyer to turn a missing answer into a precise condition: expected document, responsible party, date and consequence. “Subject to the line not being a problem” is not a test. CASA i CASA can organise the investigation and project scope, but it cannot identify an operator without evidence, calculate regulatory clearances or grant an authorization.

Tell us the municipality and autonomous community, plot references, observed line position, documents available, intended house and purchase stage. Do not send personal or sensitive files in the first message. That context lets the team frame useful checks before you commit the deposit.