Hallway — surveyed plan

hallway floor door

The hallway

10.6 m² fitted, closing to 3.3 cm on a 24-wall, ~23 m perimeter

Fit against your survey

#	Wall	Yours	Fitted	Diff
1	— Sar’s Office wall	860	860.4	+0.4
2	—	1150	1153.3	+3.3
3	— (short leg)	95	95.4	+0.4
4	—	1015	1018.3	+3.3
5	—	1065	1065.4	+0.4
6	— front door wall	970	973.3	+3.3
7	—	1380	1379.7	−0.3
8	—	1465	1468.3	+3.3
9	—	1780	1779.8	−0.2
10	— hardest corner to measure	720	721.8	+1.8
11	—	2575	2575.7	+0.7
12	— main room door wall	1225	1221.7	−3.3
13	—	345	345.5	+0.5
14	—	460	456.7	−3.3
15	—	1200	1200.5	+0.5
16	—	1340	1338.4	−1.6
17	—	470	470.3	+0.3
18	—	600	598.2	−1.8
19	— notch, still loose (see below)	245	245.1	+0.1
20	— notch, still loose	240	236.7	−3.3
21	— notch	250	249.9	−0.1
22	— dining room door wall	1250	1246.7	−3.3
23	—	580	580.2	+0.2
24	— closing, back to Sar’s Office wall	1700	1696.7	−3.3

Every wall now lands within 3.3 mm of what you measured — tighter than Sar’s Office. Getting here took several rounds of cross-checking with diagonal measurements and known parallel walls (front door to main room door; wall 10 to wall 16; wall 9 to wall 19), which caught a few misread corners along the way. One corner (10, between walls 10 and 11) is still a best estimate rather than a confirmed reading — see below.

Angles

Corner	Interior
After wall 6 (front door)	91°
After wall 7	272°
After wall 8	89°
After wall 9	217°
After wall 10	159.5°?
After wall 11	68.5°
After wall 13	271°
After wall 14	89.6°
After wall 15	217.4°
After wall 16	146.6°
After wall 17	217.9°
After wall 18	144.3°
After wall 19	271°
After wall 20	270°
After wall 21	88°
Every other corner	≈90°

180° = a straight wall; below 180° the hallway turns left, above 180° it turns right. Confirmed against three independent checks: two tape-measure diagonals (front door to the corner between walls 17/18, ~338 cm measured vs. fitted; Sar’s Office door to the corner between walls 4/5, ~240 cm) and three parallel-wall pairs you identified on site (front door ↔ main room door; wall 10 ↔ wall 16; wall 9 ↔ wall 19).

What’s settled

Connects four doors. Sar’s Office, the main room, the dining room, and the flat’s own front door, all off this one hallway.
Not being changed. Every door onto it is existing and unchanged; this page exists to capture the numbers for future planning.
The registered floor plan is out of date here. The previous owner renovated this area before the flat was bought — what the old plan shows as a small bathroom is now the laundry, and an open area on the old plan is now a second bathroom, with the toilet reversed into it. The old plan is only used here to confirm the building has a genuinely sloped outer wall, which is part of why this hallway has so many non-90° corners.

Needs verification on site

Corner 10 (between walls 10 and 11) — the hardest corner in the survey to get an angle app on. 159.5° is a best-fit estimate, not a confirmed reading; two direct re-measurements (169°, then 170°) didn’t match the rest of the shape, so treat this one as provisional until it can be checked again, ideally with a straightedge rather than a phone.
Exact door positions along each wall. Unlike Sar’s Office, this walkthrough didn’t capture door-leaf sub-measurements, so all four doors are placed schematically on their wall, not at a measured offset.