MINIMUM
STANDARD DETAIL REQUIREMENTS
for ALTA/ACSM LAND TITLE SURVEYS
as adopted by
American Land Title
Association
American Congress on Surveying and Mapping
and National Society of Professional Surveyors
1999
It is
recognized that members of the American Land Title
Association (ALTA) have specific needs, peculiar to
title insurance matters, which require particular
information for acceptance by title insurance companies
when said companies are asked to insure title to land
without exceptions as to the many matters which might be
discoverable from survey and inspection and not be
evidenced by the public records. In the general interest
of the public, the surveying profession, title insurers
and abstracters, ALTA, the American Congress on
Surveying and Mapping (ACSM) and the National Society of
Professional Surveyors, Inc. (NSPS) jointly promulgate
and set forth such details and criteria for standards.
It is understood that local variations may require local
adjustments to suit local situations, and often must be
applied. It is recognized that title insurance companies
are entitled to rely on the survey furnished to them
being of the appropriate professional quality, both as
to completeness and as to accuracy. It is equally
recognized that for the performance of a survey, the
surveyor will be provided with appropriate data which
can be relied upon in the preparation of the survey.
For a
survey of real property and the plat or map of the
survey to be acceptable to a title insurance company for
purposes of insuring title to said real property free
and clear of survey matters (except those matters
disclosed by the survey and indicated on the plat or
map), certain specific and pertinent information shall
be presented for the distinct and clear understanding
between the client (insured), the title insurance
company (insurer), and the surveyor (the person
professionally responsible for the survey).
These requirements are:
1. The client shall
request the survey or arrange for the survey to be
requested and shall provide a written authorization to
proceed with the survey from the person responsible for
paying for the survey. Unless specifically authorized in
writing by the insured, the insurer shall not be
responsible for any costs associated with the
preparation of the survey. The request shall specify
that an "ALTA/ACSM LAND TITLE SURVEY" is required,
meeting the then-current accuracy standards jointly
adopted by ALTA, ACSM and NSPS. The request shall also
designate which of the optional items listed in Table A
are to be incorporated. The request shall set forth the
record description of the property. Complete copies of
the record description of the property, any record
easements benefiting the property, the record easements
or servitudes and covenants affecting the property
("Record Documents"), documents of record referred to in
the Record Documents, and any other documents containing
desired appropriate information affecting the property
being surveyed and to which the survey shall make
reference shall be provided to the surveyor for notation
on the plat or map of survey.
2. The plat or map of such
survey shall bear the name, address, telephone number,
and signature of the professional land surveyor who made
the survey, his or her official seal and registration
number, the date the survey was completed and the dates
of all revisions, and the caption "ALTA/ACSM Land Title
Survey" with the certification set forth in paragraph 8.
3. An "ALTA/ACSM LAND
TITLE SURVEY" shall be in accordance with the
then-current "Accuracy Standards for Land Title Surveys"
("Accuracy Standards") as adopted, from time to time, by
the American Congress on Surveying and Mapping, the
National Society of Professional Surveyors, and the
American Land Title Association and incorporated herein
by reference.
4. On the plat or map of
an "ALTA/ACSM LAND TITLE SURVEY," the survey boundary
shall be drawn to a convenient scale, with that scale
clearly indicated. A graphic scale, shown in feet or
meters or both, shall be included. A north arrow shall
be shown and when practicable, the plat or map of survey
shall be oriented so that north is at the top of the
drawing. Symbols or abbreviations used shall be
identified on the face of the plat or map by use of a
legend or other means. If necessary for clarity,
supplementary or exaggerated diagrams shall be presented
accurately on the plat or map. The plat or map shall be
a minimum size of 8 1/2 by 11 inches.
5. The survey shall be
performed on the ground and the plat or map of an "ALTA/ACSM
LAND TITLE SURVEY" shall contain, in addition to the
required items already specified above, the following
applicable information:
(a) All data necessary to
indicate the mathematical dimensions and relationships
of the boundary represented, with angles given directly
or by bearings, and with the length and radius of each
curve, together with elements necessary to
mathematically define each curve. The point of beginning
of the surveyor's description shall be shown as well as
the remote point of beginning if different. A bearing
base shall refer to some well-fixed bearing line, so
that the bearings may be easily re-established. All
bearings around the boundary shall read in a clockwise
direction wherever possible. The North arrow shall be
referenced to its bearing base and should that bearing
base differ from record title, that difference shall be
noted.
(b) When record bearings
or angles or distances differ from measured bearings,
angles of distances, both the record and measured
bearings, angles, and distances shall be clearly
indicated. If the record description fails to form a
mathematically closed figure, the surveyor shall so
indicate.
(c) Measured and record
distances from corners of parcels surveyed to the
nearest right-of-way lines of streets in urban or
suburban areas, together with recovered lot corners and
evidence of lot corners, shall be noted. The distances
to the nearest intersecting street shall be indicated
and verified. Names and widths of streets and highways
abutting the property surveyed and widths of rights of
way shall be given. Any use contrary to the above shall
be noted. Observable evidence of access (or lack
thereof) to such abutting streets or highways shall be
indicated. Observable evidence of private roads shall be
so indicated. Streets abutting the premises, which have
been described in Record Documents, but not physically
opened, shall be shown and so noted.
(d) The identifying titles
of all recorded plats, filed maps, right of ways maps,
or similar documents which the survey represents, wholly
or in part, shall be shown with their appropriate
recording data, filing dates and map numbers, and the
lot, block, and section numbers or letters of the
surveyed premises. For non-platted adjoining land, names
and recording data identifying adjoining owners as they
appear of record shall be shown. For platted adjoining
land, the recording data of the subdivision plat shall
be shown. The survey shall indicate platted setback or
building restriction lines which have been recorded in
subdivision plats or which appear in a Record Document
which has been delivered to the surveyor. Contiguity,
gores, and overlaps along the exterior boundaries of the
surveyed premises, where ascertainable from field
evidence or Record Documents, or interior to those
exterior boundaries, shall be clearly indicated or
noted. Where only a part of a recorded lot or parcel is
included in the survey, the balance of the lot or parcel
shall be indicated.
(e) All evidence of
monuments shall be shown and noted to indicate which
were found and which were placed. All evidence of
monuments found beyond the surveyed premises on which
establishment of the corners of the surveyed premises
are dependent, and their application related to the
survey shall be indicated.
(f) The character of any
and all evidence of possession shall be stated and the
location of such evidence carefully given in relation to
both the measured boundary lines and those established
by the record. An absence of notation on the survey
shall be presumptive of no observable evidence of
possession.
(g) The location of all
buildings upon the plot or parcel shall be shown and
their locations defined by measurements perpendicular to
the boundaries. If there are no buildings erected on the
property being surveyed, the plat or map shall bear the
statement, "No buildings." Proper street numbers shall
be shown where available.
(h) All easements
evidenced by a Record Document which have been delivered
to the surveyor shall be shown, both those burdening and
those benefiting the property surveyed, indicating
recording information. If such an easement cannot be
located, a note to this effect shall be included.
Observable evidence of easements and/or servitudes of
all kinds, such as those created by roads;
rights-of-way; water courses; drains; telephone,
telegraph, or electric lines; water, sewer, oil or gas
pipelines on or across the surveyed property and on
adjoining properties if they appear to affect the
surveyed property, shall be located and noted. If the
surveyor has knowledge of any such easements and/or
servitudes, not observable at the time the present
survey is made, such lack of observable evidence shall
be noted. Surface indications, if any, of underground
easements and/or servitudes shall also be shown.
(i) The character and
location of all walls, buildings, fences, and other
visible improvements within five feet of each side of
the boundary lines shall be noted. Without expressing a
legal opinion, physical evidence of all encroaching
structural appurtenances and projections, such as fire
escapes, bay windows, windows and doors that open out,
flue pipes, stoops, eaves, cornices, areaways, steps,
trim, etc., by or on adjoining property or on abutting
streets, on any easement or over setback lines shown by
Record Documents shall be indicated with the extent of
such encroachment or projection. If the client wishes to
have additional information with regard to appurtenances
such as whether or not such appurtenances are
independent, division, or party walls and are plumb, the
client will assume the responsibility of obtaining such
permissions as are necessary for the surveyor to enter
upon the properties to make such determinations.
(j) Driveways and alleys
on or crossing the property must be shown. Where there
is evidence of use by other than the occupants of the
property, the surveyor must so indicate on the plat or
map. Where driveways or alleys on adjoining properties
encroach, in whole or in part, on the property being
surveyed, the surveyor must so indicate on the plat or
map with appropriate measurements.
(k) As accurately as the
evidence permits, the location of cemeteries and burial
grounds (i) disclosed in the process of researching
title to the premises or (ii) observed in the process of
performing the field work for the survey, shall be
shown.
(l) Ponds, lakes, springs,
or rivers bordering on or running through the premises
being surveyed shall be shown.
6. As a minimum
requirement, the surveyor shall furnish two sets of
prints of the plat or map of survey to the title
insurance company or the client. If the plat or map of
survey consists of more than one sheet, the sheets shall
be numbered, the total number of sheets indicated and
match lines be shown on each sheet. The prints shall be
on durable and dimensionally stable material of a
quality standard acceptable to the title insurance
company. At least two copies of the boundary description
prepared from the survey shall be similarly furnished by
the surveyor and shall be on the face of the plat or map
of survey, if practicable, or otherwise attached to and
incorporated in the plat or map. Reference to date of
the "ALTA/ACSM LAND TITLE SURVEY," surveyor's file
number (if any), political subdivision, section,
township and range, along with appropriate aliquot parts
thereof, and similar information shown on the plat or
map of survey shall be included with the boundary
description.
7. Water boundaries
necessarily are subject to change due to erosion or
accretion by tidal action or the flow of rivers and
streams. A realignment of water bodies may also occur
due to many reasons such as deliberate cutting and
filling of bordering lands or by avulsion. Recorded
surveys of natural water boundaries are not relied upon
by title insurers for location of title.
When a property to be
surveyed for title insurance purposes contains a natural
water boundary, the surveyor shall measure the location
of the boundary according to appropriate surveying
methods and note on the plat or map the date of the
measurement and the caveat that the boundary is subject
to change due to natural causes and that it may or may
not represent the actual location of the limit of title.
When the surveyor is aware of changes in such
boundaries, the extent of those changes shall be
identified.
8. When the surveyor has
met all of the minimum standard detail requirements for
an ALTA/ACSM Land Title Survey, the following
certification shall be made on the plat:
To: (name of client),
(name of lender, if known), (name of title insurance
company, if known), (name of others as instructed by
client):
This is to certify that
this map or plat and the survey on which it is based
were made in accordance with "Minimum Standard Detail
Requirements for ALTA/ACSM Land Title Surveys," jointly
established and adopted by ALTA, ACSM and NSPS in 1999,
and includes Items ______ of Table A
thereof. Pursuant to the
Accuracy Standards as adopted by ALTA, NSPS, and ACSM
and in effect on the date of this certification,
undersigned further certifies that [Surveyor to complete
certificate with the appropriate ONE of the following
three phrases]
-
·
the Positional
Uncertainties resulting from the survey measurements
made on the survey do not exceed the allowable
Positional Tolerance.
-
·
the survey
measurements were made in accordance with the
“Minimum Angle, Distance and Closure Requirements
for Survey Measurements Which Control Land
Boundaries for ALTA/ACSM Land Title Surveys.”
-
·
proper field
procedures, instrumentation and adequate survey
personnel were employed in order to achieve results
comparable to those outlined in the “Minimum Angle,
Distance and Closure Requirements for Survey
Measurements Which Control Land Boundaries for ALTA/ACSM
Land Title Surveys.”
Date:______________________________
(signed)
_______________________ (seal)
Registration No.
Adopted by the American Land
Title Association on October 6, 1999.
Adopted by the Board of Direction, American Congress on
Surveying and Mapping on October 20, 1999.
Adopted by the Board of Directors, National Society of
Professional Surveyors on October 19, 1999.
American Land Title Association, 1828 L St., W., Suite
705, Washington, DC 20036
American Congress on Surveying and Mapping, 5410
Grosvenor Lane, Bethesda, MD 20814
National Society of Professional Surveyors, 5410
Grosvenor Lane, Bethesda, MD 20814
TABLE A
OPTIONAL SURVEY RESPONSIBILITIES
AND SPECIFICATIONS
NOTE: The items of Table A must be
negotiated between the surveyor and client. It may be
necessary for the surveyor to qualify or expand upon the
description of these items, e.g. in reference to Item 6,
there may be a need for an interpretation of a
restriction. The surveyor cannot make a certification on
the basis of an interpretation.
If checked, the following
optional items are to be included in the ALTA/ACSM LAND
TITLE SURVEY:
1._____ Monuments placed (or
a reference monument or witness to the corner) at all
major corners of the boundary of the property, unless
already marked or referenced by an existing monument or
witness to the corner.
2._____ Vicinity map showing
the property surveyed in reference to nearby highway(s)
or major street intersection(s).
3._____ Flood zone
designation (with proper annotation based on Federal
Flood Insurance Rate Maps or the state or local
equivalent, by scaled map location and graphic plotting
only.)
4._____ Land area as
specified by the client.
5._____ Contours and the
datum of the elevations.
6._____ Identify, and show
if possible, setback, height, and floor space area
restrictions of record or disclosed by applicable zoning
or building codes (in addition to those recorded in
subdivision maps). If none, so state.
7._____ (a) Exterior
dimensions of all buildings at ground level
(b) Square footage of:
_____ (1) exterior
footprint of all buildings at ground level;
_____ (2) gross floor
area of all buildings; or
_____ (3) other areas
to be defined by the client
_____ (c) Measured height
of all buildings above grade at a defined location. If
no defined location is provided, the point of
measurement shall be shown.
8._____ Substantial, visible
improvements (in addition to buildings) such as signs,
parking areas or structures, swimming pools, etc.
9._____ Parking areas and,
if striped, the striping and the type (e.g. handicapped,
motorcycle, regular, etc.) and number of parking spaces.
10._____ Indication of
access to a public way such as curb cuts and driveways.
11. Location of
utilities (representative examples of which are shown
below) existing on or serving the surveyed property as
determined by:
_____(a) Observed
evidence
_____(b) Observed
evidence together with plans and markings provided by
client, utility companies, and other appropriate sources
(with reference as to the source of information)
-
·
railroad tracks and sidings;
-
·
manholes, catch basins, valve vaults or other
surface indications of subterranean uses;
-
·
wires and cables (including their function) crossing
the surveyed premises, all poles on or within ten
feet of the surveyed premises, and the dimensions of
all crosswires or overhangs affecting the surveyed
premises; and
-
·
utility company installations on the surveyed
premises.
12._____ Governmental Agency
survey-related requirements as specified by the client.
13._____ Names of adjoining
owners of platted lands.
14._____ Observable evidence
of earth moving work, building construction or building
additions within recent months.
15._____ Any changes in
street right of way lines either completed or proposed,
and available from the controlling jurisdiction.
Observable evidence of recent street or sidewalk
construction or repairs.
16._____ Observable evidence
of site use as a solid waste dump, sump or sanitary
landfill.
17.________________________________________________________________________________________________________________________
Accuracy Standards for ALTA-ACSM Land Title Surveys
Introduction
These
Accuracy Standards address Positional Uncertainty and
Minimum Angle, Distance and Closure Requirements for ALTA-ACSM
Land Title Surveys. In order to meet these standards, the
Surveyor must assure that the Positional Uncertainties
resulting from the survey measurements made on the survey do
not exceed the allowable Positional Tolerance. If the size
or configuration of the property to be surveyed or the
relief, vegetation, or improvements on the property will
result in survey measurements for which the Positional
Uncertainty will exceed the allowable Positional Tolerance,
the surveyor must alternatively apply the within table of
"Minimum Angle, Distance and Closure Requirements for Survey
Measurements Which Control Land Boundaries for ALTA-ACSM
Land Title Surveys" to the measurements made on the survey
or employ, in his or her judgment, proper field procedures,
instrumentation and adequate survey personnel in order to
achieve comparable results.
The lines
and corners on any property survey have uncertainty in
location which is the result of (1) availability and
condition of reference monuments, (2) occupation or
possession lines as they may differ from record lines, (3)
clarity or ambiguity of the record descriptions or plats of
the surveyed tracts and its adjoiners and (4) Positional
Uncertainty.
The first
three sources of uncertainty must be weighed as evidence in
the determination of where, in the professional surveyor's
opinion, the boundary lines and corners should be placed.
Positional Uncertainty is related to how accurately the
surveyor is able to monument or report those positions.
Of these
four sources of uncertainty, only Positional Uncertainty is
controllable, although due to the inherent error in any
measurement, it cannot be eliminated. The first three can be
estimated based on evidence; Positional Uncertainty can be
estimated using statistical means.
The surveyor
should, to the extent necessary to achieve the standards
contained herein, compensate or correct for systematic
errors, including those associated with instrument
calibration. The surveyor shall use appropriate error
propagation and other measurement design theory to select
the proper instruments, field procedures, geometric layouts
and computational procedures to control and adjust random
errors in order to achieve the allowable Positional
Tolerance or required traverse closure.
If radial
survey methods are used to locate or establish points on the
survey, the surveyor shall apply appropriate procedures in
order to assure that the allowable Positional Tolerance of
such points is not exceeded.
Definitions:
"Positional
Uncertainty" is the uncertainty in location, due to random
errors in measurement, of any physical point on a property
survey, based on the 95% confidence level.
"Positional
Tolerance" is the maximum acceptable amount of Positional
Uncertainty for any physical point on a property survey
relative to any other physical point on the survey,
including lead-in courses.
Computation Of
Positional Uncertainty
The
Positional Uncertainty of any physical point on a survey,
whether the location of that point was established using GPS
or conventional surveying methods, may be computed using a
minimally constrained, correctly weighted least squares
adjustment of the points on the survey.
Positional Tolerances for
Classes of Survey
|
0.07 feet (or 20mm) + 50ppm |
Application of Minimum Angle, Distance, and Closure
Requirements
The combined
precision of a survey can be statistically assured by
dictating a combination of survey closure and specified
procedures for an ALTA/ACSM Land Title Survey. ACSM, NSPS
and ALTA have adopted the following specific procedures in
order to assure the combined precision of an ALTA/ACSM Land
Title Survey . The statistical base for these specifications
is on file at ACSM and available for inspection.
American Congress On Surveying
And Mapping
Minimum Angle, Distance
And Closure Requirements For Survey Measurements
Which Control Land Boundaries For ALTA/ACSM Land Title
Surveys
(Note 1)
|
Dir. Reading
of
Instrument
(Note 2) |
Instrument Reading Estimated
(Note 3) |
Number of Observations Per Station
(Note 4) |
Spread From
Mean of D&R
Not To Exceed
(Note 5) |
Angle Closure Where N=No. of Stations
Not To
Exceed |
Linear Closure
(Note 6) |
Distance Measurement
(Note 7) |
Minimum Length of Measurements
(Notes 8, 9, 10) |
|
20" <1'>
10" |
5"
<0.1'> N.A. |
2
D&R |
5"<0.1'>
5" |
10" ÖN |
1:15,000 |
EDM or
Doubletape
with Steel Tape |
(8) 81m, (9) 153m,
(10) 20m |
Note
(1) All requirements of each class must be satisfied in
order to qualify for that particular class of survey. The
use of a more precise instrument does not change the other
requirements, such as number of angles turned, etc.
Note (2)
Instrument must have a direct reading of at least the amount
specified (not an estimated reading), i.e.: 20" = Micrometer
reading theodolite,
<1'> = Scale
reading theodolite,
10" = Electronic reading theodolite.
Note (3)
Instrument must have the capability of allowing an estimated
reading below the direct reading to the specified reading.
Note (4) D
& R means the Direct and Reverse positions of the instrument
telescope, i.e., Urban Surveys require that two angles in
the direct and two angles in the reverse position to be
measured and meaned.
Note (5)
Any angle measured that exceeds the specified amount from
the mean must be rejected and the set of angles re-measured.
Note (6)
Ratio of closure after angles are balanced and closure
calculated.
Note (7)
All distance measurements must be made with a properly
calibrated EDM or Steel tape, applying atmospheric,
temperature, sag, tension, slope, scale factor and sea level
corrections as necessary.
Note (8)
EDM having an error of 5 mm, independent of distance
measured (Manufacturer's specifications).
Note (9)
EDM having an error of 10 mm, independent of distance
measured (Manufacturer's specifications).
Note (10)
Calibrated steel tape.
|