Custom Components from an M&S Book

Overview

One of the main uses of custom components is to add costs for items in the Marshall Valuation Service (MVS) or the Residential Cost Handbook (RCH) that are not available in one or more of the SwiftEstimator programs.  This help topic contains the following:

Special Field Entries for M&S Book Components

Example from the Residential Cost Handbook

Example from the Marshall Valuation Service

Related Topics

Custom Component Data

Updating Custom Components

Special Field Entries for M&S Book Components

The following indicates what you should enter in some of the fields on the Custom Component Data screen when creating a custom component from he Marshall Valuation Service (MVS) or the Residential Cost Handbook (RCH):

Note:  For the unit costs, If the MVS or RCH only has a cost range, enter the lower cost in the range as the Low Unit Cost and the higher cost in the range as Excellent Unit Cost, then use straight-line interpolation to calculate the Average and Good costs using the following formulas:

Average Cost = Low Cost + 1/3 of the difference between the Excellent Cost and the Low Cost

Good Cost = Low Cost + 2/3 of the difference between the Excellent Cost and the Low Cost

You must also enter a Code for the custom component, and can enter any of the optional information (such as the Name, Unit of Measure and a Definition, as illustrated in the examples).

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Example from the Residential Cost Handbook

Page C-7 in the Residential Cost Handbook, published in March, 2004, has the following costs for Boat Docks:

Image showing example costs of boat docks from the Residential Cost Handbook

The following entries should be made to the fields indicated above for a Floating Slip:

Field

Data

Name

Floating Boat Slip

Unit of Measure

Each

Base Date

03/2004

M&S Source

Residential Cost Handbook

M&S Source: Section

C Yard Improvements

M&S Source: Page

C-7

Trend

Yes (checked)

Local Multiplier

Yes (checked)

Costs

Low:  4225
Average:  5367
Good:  6508
Excellent:  7650

The Average and Good costs in this example were calculated using straight-line interpolation between the Low Cost and Excellent Cost:

Average Cost = 4255 + .333 * (7650 - 4225) = 5367

Good Cost  = 4255 + .667 * (7650 - 4225) = 6508

You can click the Calculate button next to the costs to calculate the Fair and Very Good Costs.

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Example from the Marshall Valuation Service

Page 3 in Section 66 of the Marshall Valuation Service, published in December, 2003, has the following costs for Flagpoles:

Image showing example costs of flagpoles from the Marshall Valuation Service

The following entries should be made to the fields indicated above for a 20' Aluminum Flagpole:

Field

Data

Name

Aluminum Flagpole (20')

Unit of Measure

Each

Base Date

12/2003

M&S Source

Marshall Valuation Service

M&S Source: Section

66  Yard Improvements

M&S Source: Page

3

Trend

Yes (checked)

Local Multiplier

Yes (checked)

Costs

Low:  1275
Average:  1450
Good:  1635
Excellent:  1800

Definition

A tapered aluminum flagpole, including concrete foundation, base, external halyard, aluminum ball and installation.

The Average and Good costs in this example were calculated using straight-line interpolation between the Low Cost and Excellent Cost:

Average Cost = 1275 + .333 * (1800 - 1275) = 1450

Good Cost  = 1275 + .667 * (1800 - 1275) = 1635

You can click the Calculate button next to the costs to calculate the Fair and Very Good Costs.

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Related Topics

Custom Component Data

Updating Custom Components