Tratto dalla Rivista IoRoma o dal suo allegato Quaderno che è consultabile al sito: http://rivista.ording.roma.it
LE REGOLE PER LA DETERMINAZIONE DELLA SUPERFICIE DEGLI IMMOBILI URBANI: DPR N. 138/98 a cura di -=3, , A>>7::B -=3, , *A> ;A<A -=3, , *#%=3A>? commissione '9<B6? B66?0B>B@;A visto da -=3, , 7;@<?>? -=3, , B6@
"A> =?9<;? @A9A =?= A9B9<A 7= B=8B;B44? 7=B/?. :? :+A ;A3?>B >#@<<B/B<$ A9<B6@>A @B 1B=B 8A> :@>:?>? 8A>>@ :?=9B9<A=4@ B66?0B>B@;A,
A 9B :?=9B8A;@ B= 5@;<B:?>@;A :+A >@ 975A;1B:BA :?66A;:B@>A 8B 7=@ 7=B<$ 7;0@=@ A )7A>>@ 8A>>A 97A 5A;<B=A=4A 57 A99A;A 8A<A;6B=@<@ :?= 6A<?8B 8B/A;9B 8B 6B97;@4B?=A A 8B ?6?3A=AB4. 4@4B?=A2 A6A;3A :+A @=:+A >@ 975A;1B:BA :?6. 6A;:B@>A 8B 7= 0A=A B66?0B>A :?9<B<7B9:A A>A. 6A=<? 8B 3;@=8A B65;A:B9B?=A @B 1B=B 8A>>@ ?6?.
3A=AB<$ 8AB 8@<B A:?=?6B:B =A:A99@;B @>>@ 8A<A;. 6B=@4B?=A 8A> 97? /@>?;A 8B 6A;:@<?,
B ;B:?;8@2 @ <@> 5;?5?9B<?2 :+A >@ 975A;1B:BA :?66A;:B@>A 3A=A;@>6A=<A ;@55;A9A=<@<@ 8@>>@ 9?66@ 8A>>@ 975A;1B:BA >?;8@ /A=8B0B>A 8A>>@ 7=B<$ 5;B=:B5@>A A 8A>>@ 9?66@ 8A>>@ 97. 5A;1B:BA 5?=8A;@<@ 8A>>A 5A;<B=A=4A @::A99?;BA A 8B ?;=@6A=<? 8A>>@ 9<A99@ 7=B<$ B37;@ (, ;0A=A 9A :?=97><B@6? B> @=7@>A 8A>># 99A;. /@<?;B? 8A> A;:@<? -66?0B>B@;A 8A>>#%3A=4B@
&*-"' *' - -" ' "'&- *' % & -" -% *- & %
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orme tecniche per la determinazione della superficie catastale delle unitĂ immobiliari a destina-
zione ordinaria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
B37;@
Superficie lorda Vendibile della unitĂ con funzione principale
+ Superficie ponderata Pertinenze accessorie
Superficie ponderata Pertinenze ornamento
Superficie commerciale
&*-"' *' - -" ' "'&- *' % & -" -% *- & %
@ :?9@ 9B B=<A=8A 5A; 7=B<$ B66?0B>B@;A 7;0@. =@ ?9@ 9B B=<A=8A 5A; 8A9<B=@4B?=A ?;8B=@;B@
B ;B:?;8@ :+A :@<@9<@>6A=<A 9B 8A1B=B9:A unitĂ immobiliare urbana >#B=9BA6A 8B 1@00;B:@<B2 1@0. 0;B:@<? ? 97@ 5?;4B?=A :+A2 =A>>? 9<@<? B= :7B 9B <;?/@2 5;A9A=<@ 5;?5;B@ autonomia funzionale e potenzialitĂ reddituale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autonomia funzionale e reddituale, @ @00B@6? @=:+A 8A<<? :+A >A ;A3?>A :?=<A. =7<A =A>>#@>>A3@<? * & ( 9?=? @55>B:@. 0B>B @>>A 7=B<$ B66?0B>B@;B @ 8A9<B=@4B?=A ?;8B=@. ;B@ B=<A=8A=8? :?= <@>A 8A1B=B4B?=A >A 9A37A=<B <B5?>?3BA B66?0B>B@;B 1) UnitĂ immobiliari a destinazione abitativa di tipo privato e locali destinati a funzioni complementari %0B<@4B?=B B= 1@00;B:@<B ;A9B8A=4B@>B A 5;?6B. 9:7B! %0B<@4B?=B B= /B>>B=? A B= /B>>@! %0B<@4B?=B <B5B:+A 8AB >7?3+B! ?9<B @7<? :?5A;<B2 5?9<B @7<? 9:?5A;<B 97 @;AA 5;B/@<A2 >?:@>B 5A; ;B6A99A 8B /AB:?>B, 2) UnitĂ immobiliari a destinazione pubblica o di interesse collettivo: ;A9B8A=4A :?>>A<<B/A A 9B6B>B! 17=4B?=B 9@=B<@;BA! 17=4B?=B ;BA87:@<B/A! 17=4B?=B @66B=B9<;@<B/A2 9:?>@9<B:+A A 9B6B>B! 17=4B?=B :7><7;@>B A 9B6B>B, ( UnitĂ immobiliari a destinazione terziaria o commerciale: "A3?4B A >?:@>B @99B6B>@0B>B! @3@44B=B2 >?:@>B 8@ 8A5?9B<? A >@0?;@<?;B @;<B3B@=@>B! @00;B:@<B A >?:@>B 5A; A9A;:B4B 95?;<B/B! A=9B?=B! %7<? 9B>?92 @7<?;B6A99A A 5@;:+A33B @ ;@9? 8B <B5? 5700>B:?! <@>>A2 9:78A;BA A 9B6B>B! 11B:B2 9<78B A >@0?;@<?;B 5;?1A99B?=@>B, *@ )7@=<? 9?5;@ A/B8A=4B@<?2 @55@;A A/B8A=<A :+A >A ;A3?>A 5A; B> :@>:?>? 8A>>@ 975A;1B:BA 9A. :?=8? B 8A<<@6B 8A> * & 5?99?=? A99A. ;A @55>B:@<A A9<A=9B/@6A=<A @3>B B66?0B>B :?9<B. <7A=<B =?= 9?>? 7=@ 9B=3?>@ 5?;4B?=A B66?0B>B@.
;A @55@;<@6A=<?2 711B:B? A::( 6@ @=:+A 7= B=. <A;? B66?0B>A2 @8 A9A65B? B=<A;? 1@00;B:@<? 8A9<B=@<? @8 711B:B2 @8 @<<B/B<$ 9@=B<@;B@ A::( 57;. :+ >? 9<A99? 5?99@ A99A;A B8A=<B1B:@<? :?6A 7=B<$ B66?0B>B@;A 9A:?=8? B 8A<<@6B 8A>>#%6. 6B=B9<;@4B?=A 8A> @<@9<?,
Criteri generali per il calcolo della â&#x20AC;&#x153;Superficie principaleâ&#x20AC;? % )7A9<? 57=<? ?::?;;A B=8B:@;A
â&#x2013; Qual è lâ&#x20AC;&#x2122;unitĂ di consistenza?
;0A=A 9A:?=8? B> * & @;<, ( >#7=B<$ 8B :?=9B9<A=4@ 8A>>A 7=B<$ B66?0B>B@;B 7;0@=A @ 8A9<B=@4B?=A ?;8B=@;B@ B=8B:@<A =A> )7@8;? 3A. =A;@>A 9?5;@:B<@<? B> 6A<;? )7@8;@<? 8B 975A;. 1B:BA :@<@9<@>A,
â&#x2013; Come si computa la superficie?
A:?=8? >#@>>A3@<? B 67;B B=<A;=B A )7A>>B 5A;B. 6A<;@>B A9<A;=B /A=3?=? :?657<@<B 5A; B=<A;? 1B. =? @8 7=? 95A99?;A 6@99B6? 8B :62 6A=<;A B 67;B B= :?67=B?=A =A>>@ 6B97;@ 8A> 5A; :A=<? 1B=? @8 7=? 95A99?;A 6@99B6? 8B :6,
â&#x2013; Quali sono i criteri generali per il calcolo della superficie?
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
Criteri di ponderazione per il calcolo della â&#x20AC;&#x153;Superficie accessoriaâ&#x20AC;? â&#x2013; UnitĂ immobiliari appartenenti alla destinazione residenziale ed alla destinazione pubblica: A; >A 7=B<$ B66?0B>B@;B @55@;<A=A=<B @>>@ 8A9<B. =@4B?=A ;A9B8A=4B@>A A8 @>>@ 8A9<B=@4B?=A 570. 0>B:@ >@ 975A;1B:BA 8@<@ 8@>>@ 9?66@ :?6A 6A3>B? B=8B:@<? @> 57=<? 8A> 5;A9A=<A @;<B:?>?( @( 8A>>@ 975A;1B:BA 8AB /@=B 5;B=:B5@>B A 8AB /@=B @::A99?;B @ 9A;/B4B? 8B;A<<? 8B )7A>>B 5;B=:B. 5@>B )7@>B 0@3=B2 ;B5?9<B3>B2 B=3;A99B2 :?;;B8?B A 9B6B>B! 0( 8A>>@ 975A;1B:BA 8AB /@=B @::A99?;B @ 9A;/B.
&*-"' *' - -" ' "'&- *' % & -" -% *- & %
B37;@
B37;@
&*-"' *' - -" ' "'&- *' % & -" -% *- & %
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
A9:>79B/@ 8A>>@ 9B=3?>@ 7=B<$ B66?0B>B@;A2 :?657<@<@ =A>>@ 6B97;@ 8A> 5A; :A=<?2 1B. =? @>>@ 975A;1B:BA 8A1B=B<@ =A>>@ >A<<A;@ @( A 8A> 5A; :A=<? 5A; 975A;1B:B A::A8A=<B 8A<. <? >B6B<A! A; 5@;:+B2 3B@;8B=B2 :?;<B A 9B6B>B2 :+A :?9<B<7B9:?=? 5A;<B=A=4A 8B @0B<@4B?=B B= /B>>@ ? B= /B>>B=?2 >@ ;A>@<B/@ 975A;1B:BA 8@ :?657<@;A2 :?= B> :;B<A;B? 9?5;@ B=8B:@<?2 9?>? 5A; >@ )7?<@ A::A8A=<A B> )7B=<75>? 8A>>@ 975A;1B:BA :@<@9<@>A 8B :7B @>>@ >A<<A;@ @( B37;@ (,
â&#x2013; UnitĂ immobiliari a destinazione terziaria e commerciale A; >A 7=B<$ B66?0B>B@;B @55@;<A=A=<B @>>A 8A9<B. =@4B?=B <A;4B@;B@ A :?66A;:B@>A :?6A 6A3>B? B=8B:@<? @> 57=<? 8A> 5;A9A=<A @;<B:?>?( >@ 97. 5A;1B:BA :@<@9<@>A 8@<@ 8@>>@ 9?66@ @( 8A>>@ 975A;1B:BA 8AB >?:@>B @/A=<B 17=4B?=A 5;B=:B5@>A =A>>@ 95A:B1B:@ :@<A3?;B@ A 8AB >?. :@>B @::A99?;B @ 9A;/B4B? 8B;A<<? 8B )7A>>B
&*-"' *' - -" ' "'&- *' % & -" -% *- & %
5;B=:B5@>B! 0( 8A>>@ 975A;1B:BA 8AB >?:@>B @::A99?;B @ 9A;/B. 4B? B=8B;A<<? 8AB >?:@>B 5;B=:B5@>B :?657<@<@ =A>>@ 6B97;@ 8A> 5A; :A=<?2 9A :?67=B:@=<B :?= B >?:@. >B 8B :7B @>>@ 5;A:A8A=<A >A<<A;@ @(! 8A> 5A; :A=<? 9A =?= :?67=B:@=<B B37. ;@ (! B37;@
Per ulteriori articoli della presente pubblicazione IoRoma, consultare il sito: http://rivista.ording.roma.it
:( 8A>>@ 975A;1B:BA 8AB 0@>:?=B2 <A;;@44A A 9B6B>B :?657<@<@ =A>>@ 6B97;@ 8A> 5A; :A=<?! 8( 8A>>@ 975A;1B:BA 8A>>#@;A@ 9:?5A;<@ ? @ )7A. 9<@ @99B6B>@0B>A2 :+A :?9<B<7B9:A 5A;<B=A=4@ A9:>79B/@ 8A>>@ 9B=3?>@ 7=B<$ B66?0B>B@;A :?657<@<@ =A>>@ 6B97;@ 8A> 5A; :A=<?2 ?//A;?2 5A; >A 7=B<$ B66?0B>B@;B 8A9<B=@<A @ =A3?4B A >?:@>B @99B6B>@<B2 =A>>@ 6B97;@ 8A> 5A; :A=<?, A; >A 7=B<$ B66?0B>B@;B @55@;<A=A=<B @>>@ 8A9<B. =@4B?=A =A3?4B A >?:@>B @99B6B>@<B >@ 975A;1B:BA 8AB >?:@>B @::A99?;B @ 9A;/B4B? 8B;A<<? 8B )7A>>B 5;B=:B5@>B 8B :7B @>>@ >A<<A;@ @( 8A> 5;A:A8A=<A :?66@ 2 :?657<@<@ =A>>@ 6B97;@ 8A> 5A; :A=<? B37;@ (,
B37;@
B37;@
&*-"' *' - -" ' "'&- *' % & -" -% *- & %