Villa construction lexicon: technical terms from A to Z
This translation is provided for orientation. The German version of this page is authoritative.
52 terms relating to villa construction, construction costs and construction process — explained concisely, with references to the appropriate guides and calculators.
A
- Handover protocol
- The handover protocol records the structural condition as well as all open points and remaining work at the handover of the villa. It is a central piece of evidence because with the acceptance the period for defect liability begins and the burden of proof transfers to the builder-owner. In demanding projects the accompaniment by an independent expert who carefully documents every point is recommended. Construction supervision and quality assurance See also: Building acceptance, Warranty, Defect notification
- Fit-out quality
- The fit-out quality describes the level of the materials and components used, from natural stone and real wood floors to the sanitary range to the building technology. In the villa segment it significantly shapes the appearance, living comfort and value stability and is precisely defined in the detailed planning. Offers can only be compared if they are based on the same standards and products. Materials for the villa See also: Building specification, Materials, Floor plan
B
- Building acceptance
- At the building acceptance the builder-owner confirms that the executing company has provided its work essentially in accordance with the contract. The step is legally significant because the period for the defect liability begins with it and the final payment becomes due. For a villa it is worthwhile to bring in an independent construction expert in order to recognize defects at an early stage. Construction supervision and quality assurance See also: Handover protocol, Warranty, Work contract
- Building application
- The building application is the formal request for the issuance of a building permit that is submitted to the building supervisory authority. It includes among other things site plan, construction drawings, structural verifications and the drainage plan. As a rule the architect authorized to submit building documents signs the application - for villas often the same design author who is also responsible for the design.See also: Building permit, Development plan, HOAI
- Building specification
- The building specification is the detailed performance and material description and binding component of the construction contract. It determines which building parts, equipment and qualities are owed and serves as the standard for the later acceptance. Especially in the villa segment the rule is: the more concrete the description, the lower the risk of supplements and interpretation disputes. Contract and protection See also: Construction contract, Work contract, Fit-out quality
- Building permit
- The building permit is the official approval to execute a project according to the submitted plans. It is granted by the responsible building supervisory authority on the basis of the building application and examines the conformity with the development plan and building regulations. Without a valid permit construction may generally not be started.See also: Development plan, Building application, Development
- Ancillary construction costs
- Ancillary construction costs are all expenses around the project that go beyond the pure building costs of the structure. These include land transfer tax, notary and land register fees, development, surveying, building permit as well as planning and consulting fees. They should be factored into the overall calculation from the start with a realistic proportion (guide values, project-dependent). Ancillary costs and fees See also: Utility connection costs, Development, Land transfer tax
- Property developer
- A property developer builds a building on its own plot and sells plot and building together as a complete package. The acquisition is subject to the broker and property developer ordinance with payments in installments according to construction progress. Demanding villa builder-owners on the other hand often choose the route via an architect and a work contract relationship in order to control design and execution themselves.See also: Work contract, General contractor, Construction contract
- Construction contract
- The construction contract governs the rights and obligations between builder-owner and executing company, in particular scope of performance, price, dates and payment schedule. The consumer construction contract law protects private builder-owners among other things by a mandatory building specification. For a villa with high investment volume the contract should be professionally checked before signature. Contract and protection See also: Work contract, Building specification, Building acceptance
- Construction schedule
- The construction schedule defines the temporal sequence of all sections from excavation to handover. It serves as a steering instrument to coordinate trades, monitor deadlines and detect delays early. For villas with extensive fit-out such as pool, spa or elaborate interior construction a reliable timeline is particularly valuable. Project process overview See also: Construction contract, Shell construction, Topping out ceremony
- Development plan
- The development plan is a municipal statute that bindingly specifies how a building plot may be built on. It regulates among other things type and measure of use, number of floors, roof shape, building lines and sometimes color or material requirements. For villa plots it should be checked before the purchase as it can considerably limit the design freedom. Building plot for the villa See also: Building permit, Land register, Development
- Blower-Door-Test
- The blower door test is an airtightness measurement that detects leaks in the building envelope. A fan generates positive and negative pressure while the air exchange is measured. In well-insulated villas with controlled ventilation, proof of airtightness is an important component of the energy concept. Energy concept of the villa See also: Vapor barrier, U-value, Heat pump
- Soil report
- A soil report, also called subsoil report, examines the load-bearing capacity, composition and groundwater level of the subsoil. It provides the basis for the planning of foundation and floor slab and uncovers risks such as contaminated sites or pressing water. For villas in slope or lakeside locations it is indispensable to avoid expensive remedial work.See also: Floor slab, Basement, Development
- Floor slab
- The floor slab is the continuous, usually steel-reinforced concrete slab that serves as the foundation of the building. It transfers the loads to the subsoil and forms the floor of the ground floor if no basement is built. Its dimensioning is based on the soil report and the structural analysis.See also: Soil report, Basement, Shell construction
D
- Roof pitch
- The roof pitch denotes the angle of the roof relative to the horizontal, given in degrees. It shapes the architecture, the drainage of rain and snow, the usable roof space and the suitability for solar technology. Many villas deliberately opt for a flat roof or slightly pitched roof forms provided the development plan allows this.See also: Development plan, Shell construction, Energy concept
- Vapor barrier
- A vapor barrier is a foil or membrane that regulates the transfer of water vapor from the interior spaces into the insulation and thus prevents moisture damage. It must be airtight and professionally bonded to avoid condensation and mold in the structure. In timber hybrid constructions it is a central component of moisture protection.See also: Blower door test, U-value, Energy concept
E
- Own contribution
- Own contribution refers to work that the builder-owner performs themselves instead of through commissioned companies. In the villa segment it plays a subordinate role as high craftsmanship precision and warranty from one source are the focus here. Where it makes sense at all the scope and interfaces should be clearly coordinated with the trades in advance.See also: Interior fit-out, Works contract, Construction specification
- Energy certificate
- The energy certificate documents the energetic quality of a building and classifies it into efficiency classes. For new buildings a demand certificate is created based on the building data and must be presented on sale or rental. It helps to realistically assess the expected energy demand of a villa.See also: GEG, U-value, Energy concept
- Energy concept
- The energy concept summarizes how a villa is heated, cooled, ventilated and supplied with electricity. It combines building envelope, heat pump, controlled ventilation, solar technology and storage into a coherent overall system. Large living areas and special areas such as pool or spa make a careful early design particularly important. Energy concept of the villa See also: Heat pump, Photovoltaics, U-value
- Ground floor
- The ground floor is the level at the height of the surrounding terrain. In villas it often houses the representative open living areas with direct connection to terrace and garden. The permissible height level can be specified by the development plan.See also: Floor slab, Floor plan, Development plan
- Development
- The development ensures that a building plot is connected to road, sewerage, water, electricity and other utilities. A distinction is made between transport development and technical development with supply and disposal lines. For remote or large villa building plots it can represent a significant cost block (guide values, project-dependent). Building plot for the villa See also: House connection costs, Ancillary construction costs, Building plot
- Screed
- Screed is the load-bearing or floating floor layer that is applied to the raw ceiling and forms the substrate for the subsequent floor covering. It often accommodates the pipes of the underfloor heating and must dry sufficiently before covering. For large-format natural stone floors careful drying and evenness is particularly important.See also: Shell construction, Underfloor heating, Interior fit-out
F
- Underfloor heating
- The underfloor heating emits heat over a large area via the floor and works with low flow temperatures. It harmonizes particularly well with heat pumps and enables even invisible heat distribution. In villas with open room sequences and floor-to-ceiling glazing it is part of the standard.See also: Heat pump, Screed, Energy concept
G
- GEG
- The Building Energy Act (GEG) bundles the energy requirements for new buildings and existing buildings in Germany. It regulates among other things that new heating systems are increasingly operated with renewable energies and defines minimum standards for thermal insulation. For the new construction of a villa it is decisive for insulation and heating technology.See also: Heat pump, Energy certificate, Energy concept
- General contractor
- A general contractor assumes the complete construction work from a single source and commissions the individual trades as subcontractors. For the builder-owner there is only one contractual partner which simplifies coordination and warranty. For individually designed villas the clear demarcation between architect services and execution is decisive. Architect or general contractor See also: Property developer, Works contract, HOAI
- Warranty
- The warranty obliges the executing company to remedy defects within the statutory period; for buildings it is usually five years from acceptance. If a defect becomes apparent it should be reported in writing and a reasonable period for rectification set. Clean documentation from handover protects the builder-owner. Contract and safeguards See also: Construction acceptance, Defect notification, Acceptance report
- Land register
- The land register is a public register that documents the ownership and legal relationships of a building plot. It shows among other things owners, encumbrances such as land charges as well as rights of way or utility rights. Only with the entry does one become the legal owner of the property.See also: Real estate transfer tax, Notary, Building plot
- Real estate transfer tax
- The real estate transfer tax is payable on the purchase of a building plot or a property and is levied by the federal states. The tax rate lies between 3.5 and 6.5 percent of the purchase price depending on the state. It counts among the ancillary construction costs and is a prerequisite for the later land register entry. Ancillary costs and fees See also: Ancillary construction costs, Land register, Notary
- Floor plan
- The floor plan is the scaled top view of a floor and shows the arrangement of rooms, walls, doors and windows. It is the basis of spatial planning and shapes living comfort, lighting and visual references. In the villa it determines the zoning of representative, private and service areas. Floor plan ideas for villas See also: Ground floor, Living area, Full story
- Land charge
- The land charge is a land charge with which a property is encumbered as security for a loan. It is entered in the land register and entitles the creditor to initiate realization in the event of payment default. As a flexible security instrument it remains even after repayment until it is deleted or used again.See also: Land register, Notary, Real estate transfer tax
- Building plot
- The building plot is the demarcated land area on which the villa is built. Location, layout, soil conditions and degree of development significantly influence price and buildability. Before purchase the development plan, land register, subsoil and the question of privacy should be carefully checked. Building plot for the villa See also: Development, Development plan, Soil report
H
- House connection costs
- Building connection costs are incurred for connecting the building to the public networks for electricity, water, wastewater and telecommunications. They are part of the development and are billed by the respective utility providers. For large building plots with extended piping they are correspondingly higher (guide values, project-dependent). Ancillary costs and fees See also: Development, Ancillary construction costs, Building plot
- HOAI
- The fee schedule for architects and engineers (HOAI) forms the framework for the remuneration of planning services. It divides projects into nine service phases from the basic determination to the property supervision. The fee tables serve today as a guide so that fees can be freely agreed - for individual villas an important negotiation point. Ancillary costs and fees See also: Building permit application, Construction contract, General contractor
I
- Interior fit-out
- The interior fit-out comprises all works that are carried out inside after the shell construction: screed, drywall, electrical and plumbing installation, floor coverings, interior doors as well as painting and surface works. In the villa it decides on material quality, workmanship and atmosphere and accounts for a large part of the budget.See also: Shell construction, Screed, Materials
K
- Basement
- The basement is a storey located wholly or partially below the terrain that creates additional usable and living areas. In villas it often accommodates wellness, fitness, wine storage, technology or garages. It requires a load-bearing, preferably dry building ground, which is why a soil survey is advisable.See also: Floor slab, Soil survey, Shell construction
M
- Notification of defects
- With a notification of defects the builder-owner indicates a detected defect to the executing company in writing and requests rectification. It should describe the defect precisely, set an appropriate period and be documented for evidentiary reasons. If the contractor does not respond, further rights such as price reduction can take effect. Contract and security See also: Warranty, Construction acceptance, Acceptance protocol
- Solid construction
- In solid construction load-bearing components are erected from mineral building materials such as brick, sand-lime stone or concrete. It is regarded as durable, value-stable and offers good sound and fire protection as well as high heat storage capacity. In the villa segment it is one of the defining construction methods alongside exposed concrete, natural stone and wood hybrid. Construction methods in comparison See also: Shell construction, U-value, Materials
- Materials
- The choice of materials determines the appearance, tactile quality, longevity and value retention of a villa. For facade, floors and interior fit-out natural stone, exposed concrete, solid wood, metal and large-format glazing are used for example. A coherent material palette connects architecture, interior space and outdoor facility to a whole. Materials for the villa See also: Fit-out quality, Interior fit-out, Solid construction
N
- Notary
- The notary certifies the building plot or property purchase contract, which is legally required in Germany. He ensures a legally secure execution, arranges land register entries and maintains the interests of both parties neutrally. The notary costs count towards the ancillary construction costs and are based on the purchase price.See also: Land register, Property transfer tax, Ancillary construction costs
P
- Photovoltaics
- A photovoltaic system converts sunlight directly into electrical power and lowers the energy costs for household and heat pump. In combination with a battery storage the self-consumption and the independence from the grid increase. In villas with high electricity demand, for example through pool and air conditioning, it is an important component of the energy concept. Energy concept of the villa See also: Heat pump, Energy concept, Smart home
R
- Topping-out ceremony
- The topping-out ceremony traditionally marks the completion of shell construction and roof truss. It serves as thanks to the parties involved in the construction and as a visible milestone in the sequence. Usually an invitation to a drink is issued while the topping-out speech is read.See also: Shell construction, Construction schedule, Roof pitch
- Shell construction
- The shell construction comprises the load-bearing and bracing components of a building such as foundation, walls, ceilings and roof truss. After its completion the structure is weatherproof but not yet habitable as the interior fit-out follows. Its completion is often celebrated with the topping-out ceremony. Project sequence overview See also: Interior fit-out, Topping-out ceremony, Floor slab
S
- Turnkey
- Turnkey denotes the handover of a building ready for occupancy so that after acceptance one can move in directly. The exact scope results from the building description since the term is not legally firmly defined. Especially for villas it is to be checked whether outdoor facilities, special equipment and surfaces are actually included. Contract and security See also: Building description, Works contract, Interior fit-out
- Exposed concrete
- Exposed concrete is concrete whose surface remains visible for design purposes and is not covered. It requires high precision in formwork, mix and execution as errors are permanently visible. In contemporary villa architecture it is appreciated as a striking, high-value design tool for walls, ceilings and facades. Construction methods in comparison See also: Solid construction, Materials, Shell construction
- Smart home
- A smart home is a building in which technology such as heating, lighting, shading, security and media is networked and controlled automatically. The systems can be operated via app, voice or scene control and optimize comfort and energy consumption. In the villa an early planned cabling in the shell construction forms the basis for a continuous concept. Smart home and security See also: Photovoltaics, Energy concept, Interior fit-out
- Statics
- The statics calculates the load capacity and stability of a building under all expected loads. A structural engineer creates the structural proofs as part of the building permit application and determines the dimensioning of load-bearing components. Large spans, cantilevered components and floor-to-ceiling glazing in villas require special care.See also: Building permit application, Floor slab, Shell construction
T
- Drywall construction
- The drywall construction comprises non-load-bearing constructions from panels and stud frames, for example for walls, suspended ceilings or light coves. It manages without mortar or concrete, is quick to erect and offers space for insulation and installations. In the villa it enables precise transitions, indirect lighting and the integration of technology.See also: Interior fit-out, Vapor barrier, Screed
U
- U-value
- The U-value, also heat transfer coefficient, indicates how much heat is lost through a component, measured in watts per square meter and kelvin. The smaller the value the better the insulation effect of wall, roof or window. It is a central characteristic for energy efficiency and compliance with the GEG requirements.See also: GEG, Vapor barrier, Energy concept
V
- Full storey
- A full storey is a storey that according to the state building regulations has a certain minimum height over a sufficient area share. The permissible number of full storeys is defined in the development plan and determines the building volume significantly. For multi-storey villas it is decisive for cubature and height development.See also: Development plan, Ground floor, Roof pitch
W
- Heat pump
- A heat pump extracts heat from the environment from air, soil or groundwater and raises it with electrical energy to a usable temperature level. It is considered a key technology for climate-friendly heating and fulfills the specifications of the GEG for renewable energies. In connection with surface heating and photovoltaics it works particularly efficiently in the villa. Energy concept of the villa See also: GEG, Underfloor heating, Photovoltaics
- Works contract
- The works contract obliges the contractor to produce a specific work while the builder-owner owes the agreed remuneration. For construction on own building plot it is the legal basis of the commissioning. Central effects such as acceptance, defect liability and payment due date are governed by the works contract law. Contract and security See also: Construction contract, Construction acceptance, General contractor
- Living area
- The living area refers to the floor area of the living rooms accountable according to the living area ordinance. Areas under roof slopes or in basements are only taken into account proportionally or not at all, which is why it differs from the gross floor area. In the villa segment it is an important reference value for square meter prices and investment frameworks (guideline values, project-dependent). Square meter price of the villa See also: Floor plan, Full storey, Ground floor
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