JP4416420B2 - Building profit simulation device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building profit simulation apparatus for evaluating the profitability of a building that rents a room or the building itself.
[0002]
[Prior art]
Conventionally, when a building is constructed and the building or room is to be rented, the landlord starts construction after taking an estimate from a housing construction company and considering the current rental cost. Therefore, the accuracy was poor in considering the profitability.
[0003]
[Problems to be solved by the invention]
Maintenance of a house after the construction of the house is ad hoc, and repair is usually performed when an abnormality occurs somewhere in the house. Therefore, the landlord cannot know when repairs are needed and how much it costs.
[0004]
In addition, general financial profit simulation devices have been known, but maintenance costs such as repairs after home construction or renovation costs are not considered, and the accuracy of profit simulations related to housing such as rental housing is poor. There is also a problem.
[0005]
Therefore, the object of the present invention is to accurately simulate or evaluate the long-term profit, maintenance cost, maintenance time, etc. when the building is rented before building the building (long-term considering building maintenance cost). The object is to provide a simulation apparatus.
[0006]
[Means for Solving the Problems]
In order to achieve such an object, a building profit simulation apparatus that performs a profit simulation according to the construction years of a building includes a basic chassis structure and a plurality of members that are subject to periodic repair or replacement maintenance. In a building profit simulation apparatus that performs a profit simulation according to the construction years of a building composed of: a service life that is common among a plurality of maintenance target members, and a periodically common relationship that differs between the members A database that stores the service life associated with the member, a database that stores the cost required for repair or replacement maintenance at the time of reaching the service life, and the database stored in the database. For each member subject to maintenance of the periodic repair or replacement From the service life, a maintenance target member that detects a maintenance target member corresponding to the time when the current year reaches the service life is detected, and maintenance for repair or replacement of a member having the same maintenance time is detected. Based on the cost required for maintenance or replacement maintenance of each member stored in the database, the integration means for integrating the total cost required for maintenance or replacement maintenance for the current year, and the maintenance time detection means The maintenance period, which is the period when the detected service life of each member is reached, and the total cost of repair or replacement maintenance required for each maintenance period, accumulated by the accumulating means, are maintained over the estimated useful life of the building. The relevant parts of the program and To correspond to the year, characterized in that comprises an output means for visual output and by.
[0007]
In addition, the service life of each member to be repaired or replaced is different from the service life of the basic chassis structure that is maintenance-free over the expected service life, but is in a periodically shared relationship. . In addition, the plurality of members that are targets of periodic repair or replacement maintenance are exterior members or embedded equipment members .
[0008]
In addition, an initial condition input means for inputting a revenue condition including rental income of a building, a condition including a rental section calculation condition, the initial condition input from the initial condition input means, and the useful life calculated by the integrating means Using the calculation formula whose parameter is the cost of repair or replacement maintenance to reach the building, accumulated revenue including rental income over the estimated useful life of the building, or rental income and maintenance of the repair or replacement of the building And a profit simulation information processing means for calculating the total property including the cost required for the above.
[0009]
The initial condition input means may further input a specification change and time of the building.
[0010]
The output means outputs the cumulative income or the total property, which is a profit simulation result calculated by the information processing means using the initial condition input by the initial condition input means, in a comparable manner.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0012]
FIG. 1 shows a system configuration of a building maintenance cost-considering long-term profit simulation apparatus to which the present invention is applied. In FIG. 1, reference numeral 1 denotes a (building maintenance cost-considered long-term) profit simulation device, which simulates profits when a rental house including a room is constructed, and also simulates items, time, costs, etc. that require maintenance. The profit simulation apparatus 1 can be a commercially available general-purpose computer such as a personal computer or a workstation.
[0013]
Reference numeral 2 denotes an input device which inputs initial conditions necessary for executing the simulation. The input device 2 uses a keyboard and a mouse.
[0014]
Reference numeral 3 denotes a display device, which displays the simulation results shown in FIG. 5 and information input from the input device 2. A database 4 stores information necessary for the simulation. In the present embodiment, for example, the number of parts and members, the unit price, the unit price, the service life, in association with the part name and part name of the building necessary for construction for each building type (for example, planning pattern such as layout) Various information such as repair costs is registered in the database. The inventor of the present application notices that the time to reach the service life of the members of the house is a time that requires repair, summarizes the names of parts and / or parts having the common service life of the house, and repair costs related to those parts and members We have invented a profit simulation device that simulates items, costs, time, etc. that require maintenance. In addition, the inventors have invented a profit simulation apparatus that uses the simulation function related to maintenance to calculate the cost required for maintenance and simulates the profitability of a rental house (building) over a long period of time.
[0015]
Reference numeral 5 denotes a printer, which prints out a simulation result related to maintenance in the form of FIG. In addition, the sheet | seat shown in FIG. 4 is previously attached with the scale over the estimated useful life of a building, and the member name contained in the exterior member and the embedded equipment member which is a maintenance object site | part is printed in the direction orthogonal to this scale. A graphic 10 indicating the maintenance time of each member included in the exterior member and the embedded equipment member is printed in advance along the scale direction, and an entry column (blank) 11 for entering a maintenance cost is printed in advance. ing. The maintenance cost obtained by the simulation is printed by the printer 5 in the maintenance cost entry column of the sheet.
[0016]
In addition, the sheet is provided with an entry field for entering information relating to the building to be maintained. This entry field may be left blank, or predetermined information may be printed by the printer 5.
[0017]
A simulation process executed in such a system configuration will be described with reference to FIGS. FIG. 2 shows the processing contents of a program related to maintenance executed by the profit simulation apparatus 1. FIG. 3 shows the processing contents of a program that simulates long-term profitability. Both programs are stored in a storage device in the profit simulation device, for example, a hard disk, and the program is executed by the CPU in the profit simulation device 1.
[0018]
When a user, for example, a salesman or a building owner of a home sales company wants to know the maintenance cost and the maintenance time, he / she instructs the input device 2 to start the program of FIG. Thereby, the program of FIG. 2 is executed. It should be noted that specification information relating to the building that has been built (information relating to design and construction, including the components used, the number of pieces, and the useful life included in these pieces of information) is registered in the database 4 in advance. To do.
[0019]
When the user inputs a name, address, etc. as initial conditions, the CPU of the profit simulation apparatus 1 searches the database using the name, address, etc. as a query, and searches for the corresponding building specification information. The search result is temporarily stored in a memory inside the apparatus.
[0020]
The CPU extracts the maintenance time (repair or replacement time) of the part from the specification information for each next classification. In this embodiment, building members, parts, or repair items are classified into basic frame structure, roof / waterproofing, outer wall waterproofing, openings, external accessory parts, buried equipment, and exposed equipment.
[0021]
The basic frame structure includes main steel frames, reinforced concrete foundations, floor boards, roof boards, and outer wall boards.
[0022]
Roof and waterproof include roof and various sheet waterproofing.
[0023]
Exterior wall waterproofing includes exterior wall spraying and sealing.
[0024]
The opening includes an entrance door, a sash frame, and the like.
[0025]
External accessory parts include shutters, shutters, ventilation hoods, and external stairs.
[0026]
Buried facilities include water supply, hot water supply pipes, drain pipes and the like.
[0027]
Exposed facilities include kitchen sets and vanities.
[0028]
When the CPU picks up each item of each category in turn, it extracts data such as the unit price, repair cost, type of replacement or repair stored in the database 4, and accumulates the cost of repair or replacement. In the present embodiment, the building members are designed so that the useful life of the building members is, for example, 15 years and 30 years. Therefore, the members and parts having the useful lives are detected on the database 4 for each year, and are detected. Maintenance costs for repair and replacement of parts and members are accumulated by the CPU, and the accumulated result is stored in the internal memory (steps S20 → S30).
[0029]
Finally, the CPU prints out the integration result, that is, the maintenance time for each item, the maintenance cost at that time, and the type of whether the maintenance is replacement or repair in the form shown in FIG. 4 (step S40).
[0030]
With this printed sheet, the user can know that maintenance is required in the 15th, 30th, and 45th years corresponding to the cycle of the service life of each part member, and the items, types, and total cost of the maintenance.
[0031]
When a user, for example, a salesperson of a house sales company or a person who wants to build a building wants to know the profit related to building construction, the input device 2 instructs to start the program in FIG. Thereby, the program of FIG. 3 is executed. The user first enters initial conditions. The initial conditions are a building plan, a construction cost, a funding plan, an income condition, a rental calculation condition, a common calculation condition, and other conditions. The architectural plan is information indicating the contents of the building to be constructed, such as the construction scale (number of units), floor area, construction period, and the like. The construction work cost is the cost required for construction, and the financial plan is whether there is a loan, the interest rate of the loan, the number of years, etc.
[0032]
The income condition is the monthly or yearly income amount obtained when renting a room or the like. The rental section calculation conditions are the calculation conditions related to the simulation, such as the contract years, general administrative expenses and their up-rate, and tenant replacement years.
[0033]
Common calculation conditions are calculation conditions related to the entire building, such as land taxes, insurance premiums, depreciation years. Other conditions are whether or not the architectural plan has been changed and when.
[0034]
Since it is displayed on the parameter item picture display device 3 indicating such calculation conditions, the user inputs conditions for the corresponding item from the input device 2 (step S100). In this embodiment, parameter values φ1, φ2,. . . . And cumulative income and total assets are calculated from the number of years t. For this reason, a function represented by F (φ1, φ2,..., T) is prepared. By substituting the values of the parameters input above into this function, expenditure for each year, cumulative income, and total assets Calculate When the above-mentioned years t reach the predetermined service life of the member, for example, when it reaches 15 years, 30 years, 45 years, etc., replacement and repair of the members are necessary. The calculation formula for calculating is used in the calculation formula defining the above function.
[0035]
In a general profit simulation not limited to a house, only the initial investment cost, cost amortization, and income for each year are used as parameters, whereas in this embodiment, members are considered in consideration of the special property of buildings. Reaches the end of its useful life, for example 15, 30, 45. . . The repair cost (maintenance cost) generated in the year is automatically calculated by the CPU, and is incorporated into the profit simulation as one parameter in the input conditions. Therefore, it is possible to perform a profit simulation that is closer to the actual situation.
[0036]
In addition to the above-mentioned repair costs that are uniquely determined, it is considered that the renovation and rebuilding of the interior of the building at the request of the building owner can be compared in this embodiment, and the specification change of the building and If it is instructed that there is a change in the specification of the building after construction in the input step of the initial condition (step S110 is YES), the change condition, that is, the content of the renovation and the cost are input (step S115). .
[0037]
When the above conditions are input, the CPU of the profit simulation apparatus 1 uses the value of the parameter indicating the given condition, a predetermined function (calculation formula), and information stored in the database 4. The annual expenditure, the accumulated total income and the total property are calculated and stored in the internal memory of the profit simulation apparatus 1 (step S120).
[0038]
The simulation result is printed out from the printer 5 in the form as shown in FIG. 5 (step 130). This form is an example in which the cumulative income and total assets are printed in a curve for each year, and the case where renovation is performed in the 30th year, the case where a plan is changed, and the case where reconstruction is performed are compared for profit.
[0039]
In addition to the above embodiment, the following embodiment can be implemented.
[0040]
1) In the above-described embodiment, the database 4 is external to the profit simulation apparatus 1, but the system shown in FIG. 1 can also be realized by a notebook computer. Further, the input device 2 and the profit simulation device 1 may be connected by a telephone line or connected by the Internet. In this case, the simulation result is displayed and printed on the input device 2 side.
[0041]
2) Furthermore, the above system may be connected to a LAN, and a plurality of input devices may be connected to the LAN.
[0042]
3) In the above-described embodiment, the data input in the maintenance cost simulation process and the data input in the profit simulation process are different, but the building specification information can be shared. In this case, a plurality of types of building models are prepared, and the database 4 stores usage information of each model, parts requiring maintenance, and various information related to parts. Therefore, the user can set the building specification information simply by specifying the type of the building model.
[0043]
Various modifications other than those described above are possible. However, these modifications are within the technical scope of the present invention as long as they are in accordance with the technical ideas described in the claims.
[0044]
【The invention's effect】
As described above, according to the present invention, it is possible to know the time and cost of maintenance for a building intended for renting and the like, and it is possible to accurately perform a profit simulation in consideration of the maintenance cost.
[0045]
In addition, if the profit simulation device is realized on a portable laptop computer, the home sales company can perform simulations in front of those who want to build homes, and it is possible to examine home buildings in more detail and quickly. It is.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a system configuration of an embodiment of the present invention.
FIG. 2 is a flowchart showing a processing procedure executed by the profit simulation apparatus 1;
FIG. 3 is a flowchart showing a processing procedure executed by the profit simulation apparatus 1;
FIG. 4 is an explanatory diagram showing an output result of the profit simulation apparatus 1. FIG.
FIG. 5 is an explanatory diagram showing an output result of the profit simulation apparatus 1.
[Explanation of symbols]
1 Profit simulation device 2 Input device 3 Display device 4 Database 5 Printer

Claims (6)

In a building profit simulation apparatus that performs a profit simulation according to the construction years of a building including a basic structure and a plurality of members that are subject to periodic repair or replacement maintenance ,
A database that stores the useful life that is common among the plurality of members to be maintained and the useful life that is periodically related to what is different among the members in association with the member;
A database that stores the cost required for maintenance of repair or replacement at the time of reaching the useful life in association with the member;
From the service life of each member subject to maintenance of the periodic repair or replacement stored in the database, the member to be maintained corresponding to the time when the year reaches the service life is detected, and the year is designated as the maintenance time. Maintenance time detection means to perform ,
Based on the cost required for repair or replacement maintenance of each member stored in the database, the maintenance cost for repair or replacement for the member with the same maintenance time is the total cost required for repair or replacement maintenance for the current year. An accumulating means for accumulating as an expense ;
Each maintenance time that is the time to reach the service life of each member detected by the maintenance time detection means , and the total cost of repair or replacement maintenance required for each maintenance time accumulated by the accumulation means, An output means capable of visual output corresponding to the relevant year of the maintenance program over the expected life of the
A building profit simulation device characterized by comprising: In the building profit simulation apparatus according to claim 1,
Useful lives of the members are subject to the maintenance of the repair or replacement, building profitability, characterized in that the useful life of the basic skeleton structure is maintenance-free over assumed useful life is periodically common relationship different Simulation device . In the building profit simulation apparatus according to claim 1 or 2,
A building profitability simulation apparatus, wherein a plurality of members that are objects of periodic repair or replacement maintenance are exterior members or embedded equipment members . In the building profit simulation apparatus according to any one of claims 1 to 3 ,
An initial condition input means for inputting a revenue condition including a rental income of a building and a condition including a rental section calculation condition;
Using the above-described initial condition input from the initial condition input means and an arithmetic expression using as a parameter the cost required for repair or replacement maintenance until reaching the useful life calculated by the accumulating means, Profitable simulation information processing means for calculating total income including accumulated income including rental income over the assumed useful life, or rental income in the building and expenses required for maintenance of the repair or replacement, Building profitability simulation equipment. In the building profit simulation apparatus according to claim 4 ,
The initial condition input means can further input a specification change and timing of the building. In the building profit simulation apparatus according to claim 4 or 5 ,
The output means outputs the accumulated profit or the total property, which is the profit simulation result calculated by the information processing means under the initial condition input by the initial condition input means, in a comparable manner. apparatus.

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